Endorsed by Which?

AOS Energy Efficient Heating Systems Limited

4.9

241 Reviews

Opening Hours
Today - 08:00–17:00
  • Monday 08:00–17:00
  • Tuesday 08:00–17:00
  • Wednesday 08:00–17:00
  • Thursday 08:00–17:00
  • Friday 08:00–17:00
  • Saturday - Closed
  • Sunday - Closed

What is a Which? Trusted Traders Hertfordshire Trading Standards Approved Endorsement?

Which? Trusted Traders has partnered with Hertfordshire Trading Standards to create a Hertfordshire Trading Standards Approved endorsement. In addition to our standard trading standards assessment, this trader has had a DBS check and is subject to a Trading Standards intelligence check

About

AOS Heating has been one of the industry's leading experts in the Heating & Boiler industry for over 36 years.
Established in 1984, AOS are family run business who is proud of the reputation we have accomplished over the years.
AOS are a trusted company due to our outstanding customer service record, not only do we provide an honest, reliable service we also offer first class central heating, electrical & plumbing services for all.
Whether you need repairs or servicing to an existing heating system or you are interested in a completely new central heating installation we'll make sure you get the best results.
What's more AOS are also specialists in the most up-to-date heating advancements, including renewable & green technologies such as the latest energy efficient boilers and air source heat pumps. Whatever the job, you can rest assured that you are in expert hands.

What we do

  • Plumbers

    • Emergency plumbing services
    • Unvented cylinder installation and maintenance
  • Boiler, central heating and gas engineers

    • Boiler installation
    • Boiler repair
    • Boiler servicing
    • Radiators and central heating
    • Gas safety testing and inspection
  • Renewable energy

    • Air source heat pumps

Customer reviews

Why you can trust these reviews

All reviews are verified as being genuine and a true customer of this trader.

How can we be so sure?

100% of the reviews we publish have been through our stringent moderation process.

4.9
241 reviews
Customer Service
4.9
Quality
4.9
Value
4.8
Sort by
AOS Heating and Plumbing
Customer Service
Quality
Value
I have been with AOS for 25 years and their service has always been very good, their plumbers are experienced and rated highly. They recently installed a new boiler in just over one day, gave me lots of advice on heating my home, they are friendly and courteous. I would have no hesitation in recommending them. All the aftercare paperwork was sent to me in a very timely manner.
Customer in Greater London Posted on 09/07/2024 , work completed 04/07/2024
Heat Pump Installation
Customer Service
Quality
Value
Impressed with the team from AOS who installed our heat pump. Started and completed on time. Left our home clean and tidy each day. Very pleasant and polite. Guided us through the procedures required for the government grant. Assessed our home for the installation of new radiators, hot water tank and ASHP.
Customer in Cambridgeshire Posted on 14/06/2024 , work completed 17/05/2024
AOS Service
Customer Service
Quality
Value
Once again a very efficient and professional service provided by AOS, both back office and the service engineer. This appointment was rearranged at short notice and AOS went the extra mile to fit in this service. Clear summary of work done by a polite and friendly engineer who was clean and tidy in his work. All my questions were answered comprehensively. The previously high standard of service provided by AOS has been maintained and it is reassuring to know they support and maintain my heating system.
Customer in Bedford Posted on 12/06/2024 , work completed 11/06/2024
AOS Great Service
Customer Service
Quality
Value
I had quotes from British Gas and smaller companies than AOS and none met their price. They said the work would take 2-3 days as it was more than just a boiler replacement. The 4 man team run on site by Ryan completed, tested and commissioned the system in just under 2 days. Nothing was a problem for them even though a new bathroom was being fitted at the same time by a builder. Having been in construction all my life the standard of the installation was 100%. I would recommend them every time.
Customer in Hertfordshire Posted on 23/05/2024 , work completed 25/04/2024
Air source heating installation together with the replacement of all radiators - first class.
Customer Service
Quality
Value
Everything about this company instills customer confidence. The initial presentation was honest, factual and informative with absolutely no pressure selling whatsoever. The survey was extremely detailed and the proposal was clear, concise and well documented. As for the installation team, they were excellent. They arrived promptly each day and the first task each morning was to ensure that dust sheets were laid everywhere. Before leaving each day the dust sheets were removed and everywhere was vacuumed and the house was left in a pristine condition. This was repeated every day. The installation was extremely professional and the handover and operating instructions were detailed very clearly. In conclusion, a very experienced company that I would thoroughly recommend.
Customer in Essex Posted on 07/05/2024 , work completed 03/05/2024
New Boiler Installation
Customer Service
Quality
Value
I was fed up with British Gas. I had a service contract with them, and the last time they did a service they were in the house for ten minutes. I left British Gas and went to AOS on the recommendation of a friend. When it came to needing a new boiler, they were very impressive. Price was reasonable. They arrived on time - slightly early in fact. Put dust sheets everywhere. Completed the job in a day, were polite, courteous and knowledgeable. Very impressive. And I get a discount on my service contract too. First class, highly recommended!
Customer in Greater London Posted on 24/04/2024 , work completed 15/04/2024
AOS Heating
Customer Service
Quality
Value
We have recently had our boiler replaced by AOS heating following a power flush and service on our old boiler, which was constantly suffering from loss of pressure. We have found everyone that we have had contact with to be efficient, knowledgeable and great to work with. I would recommend them. I have scored them average on value as there are cheaper company’s out there but you get what you pay for.
Customer in Hertfordshire Posted on 24/04/2024 , work completed 22/04/2024
Great Service
Customer Service
Quality
Value
Called for assistance using our monthly plan with AOS. Great prompt service and Aidan who has visited us before was again excellent
Customer in Hertfordshire Posted on 23/04/2024 , work completed 23/04/2024
AOS heat pump
Customer Service
Quality
Value
I highly recommend the whole team from AOS for installing an air source heating system in our house. From the information given by Andy and Keith with no high pressure sales . We were given the facts and left to decide. The ladies Lucy and Josie in the office who are so kind and helpful keeping us informed of our government grant application. The team of engineers Rhys, Toby and others who were so polite and friendly. They did a superb job always checking that we were happy and explaining things. Whole system plus radiators and tank installed in 4 days. The system has been in a few weeks now and is working fine. Very happy with it. I like the offer of a free return visit to carry out a health check and to answer any of our questions in the first few months. Brilliant service
Customer in Central Bedfordshire Posted on 18/04/2024 , work completed 18/04/2024
Reliable, tidy and professional
Customer Service
Quality
Value
We have had an air source heat pump installed by AOS and they have done a great job. A polite team of up to six operatives who were tidy, hard working and professional. The pre-sales service was excellent too with regular communication as to what was going on and when things would happen. Happy to recommend them.
Customer in Hertfordshire Posted on 08/04/2024 , work completed 28/03/2024
AOS Heating Systems replaced my oil boiler central heating system for an Air Source Heat Pump including all radiators and hot water tank. system.
Customer Service
Quality
Value
A leaflet through my door from AOS Heating Systems resulted in a presentation on air source heat pumps and their advantages. This led to a 1 to 1 at home assessment. We had a 25 year old oil fired boiler feeding 40 year old radiators and decided now was the time to change. We went for the full system heat pump, new radiators throughout and replacement hot water tank. The installation took 5 days as predicted. The engineers were polite, totally professional arriving on time and cleaned up after themselves each day. There were some issues, the hot water tank, supplied by a sub-contractor was delivered late. However, AOS took complete responsibility. We were kept informed and pragmatic graceful solutions proposed and successfully implemented to keep the plan on track. We are delighted with the result. The heat pump itself is significant quieter (almost silent) than the oil fired boiler and although there is a little more humming from the system, as it is pumping water around the house, it is much quieter than the clicks and groans from the old system. Counter intuitively, the radiators are not as hot, but the house is definitely warmer than before. We have just booked our after sales health check to ensure we are fully familiar with our new system and using it as efficiently and effectively as possible. All in all, as a decerning engineer, I can say this was a major household change, managed really well by a totally professional team. I have no hesitation in recommending them.
Customer in Central Bedfordshire Posted on 04/04/2024 , work completed 22/03/2024
Efficient Professional Work
Customer Service
Quality
Value
Have had good work carried out by AOS for well over 10 years. Air Source Heat Pump ( ASHP) Installed 17 July 2013 replacing oil fired system. Basically AOS Serviced system and the pump failed (wore out) on 23 January 2024 two days later survey carried out to assess what was required and two weeks after that a new ASHP was installed and upgrades on two small radiators. The work took two days and the ASHP was working. We are happy with new pump and pipe work and we were able to keep in touch with engineers at all times the wifi work was completed on the 5th March 2024. Overall costs ASHP pipework, filters, pumps, radiators and disposal of old parts and pumps reasonable (no incentives as we were just replacing the pump unit and we had our government incentive the first time round)
Customer in Buckinghamshire Posted on 11/03/2024 , work completed 05/03/2024
Considerate & thorough engineers
Customer Service
Quality
Value
We had our boiler replaced and a system flush and the two engineers were excellent. Nothing was too much trouble and they were really considerate in how they left the house and tidied up after themselves. They even did a few bits that they noticed when they were there and we are really pleased with the final result.
Customer in Hertfordshire Posted on 09/03/2024 , work completed 05/03/2024
New Boiler Installation
Customer Service
Quality
Value
We chose AOS Heating to carry out our new boiler installation as we have used them for many years to service our old boiler and have been very happy with the level of service we have received. We had a technical surveyor come out and do a survey and offer advice regarding the options available to us. The office team were always very efficient and keeping us updated by phone or email. We were provided with very detailed quotes and finance options. The two engineers that installed the boiler were very prompt and polite. They used dust sheets which we were very pleased about as we have cream carpets. They kept us updated throughout the installation. On completion of the work, I was given a full overview of all the workings of the boiler. AOS Heating also have a 24 Emergency phoneline which is very reassuring as a customer. We have been delighted with the service we have received and wouldn't hesitate to recommend AOS Heating to potential customers.
Customer in Hertfordshire Posted on 25/02/2024 , work completed 02/11/2023
Confidence in AOS Fully Justified
Customer Service
Quality
Value
We came to AOS via their Service Department, with which we have enjoyed an excellent relationship for the past two years. In January this year our ageing heat pump, as expected, broke down irretrievably, and it was with great confidence that we turned to AOS for its replacement, together with several, more suitable radiators. The preinstallation survey offered clear and useful advice. The quotation was laid out in logical detail, with diagrams, and once accepted was followed by an excellent description of the relationship both parties had a right to expect. We cannot praise the installation team too highly. Well led, and keen to get the job done properly. Everyone knew what needed to be done, worked with a minimum of fuss, and tidied up at the end of the day. It was good to be involved in discussion about the routing of pipes, the siting of electrical boards, switches and cables etc. We became party to a neat, tidy and uncluttered installation, which anticipates the needs of regular servicing, and has greatly improved the space in the airing cupboard. An art installation in its own right! The only glitch in the process was the late deliver of two radiators, which could not be helped. Expeditious resolution was followed by a clear explanation of the mysteries of the system, together with a series of glossy booklets covering every conceivable need for reference. Both encouraging and easy to follow. Our confidence in AOS fully justified.
Customer in Hertfordshire Posted on 29/01/2024 , work completed 26/01/2024
Excellent service
Customer Service
Quality
Value
I have used AOS for over 18 years for maintenance and repair. I had a problem with my boiler. I called and they were there within a few hours. Unfortunately the boiler was not safe and needed to be replaced. I found the guys very helpful and professional. I would highly recommend AOS.
Customer in Hertfordshire Posted on 10/01/2024 , work completed 09/01/2024
a job well done
Customer Service
Quality
Value
We have a maintenance contract with AOS and we needed to call on their service to fix a non critical problem = a tall radiator not fixed correctly. The response was excellent and the technician turned up early - not a problem. He could have done a quick fix but instead did a permanent job and did it thoroughly. He kept us informed and showed us what he had done. Very pleased with this.
Customer in Hertfordshire Posted on 05/01/2024 , work completed 05/01/2024
Excellent professional service throughout!
Customer Service
Quality
Value
AOS have been professional throughout the entire installation of a new Bosch 4000 combi boiler. Shoutout to Lucy for organizing all the relevant paperwork and advising on key points! AOS made good on removing an old system boiler from my kitchen and installing a new combi boiler in the loft space to gain extra space in the kitchen, airing cupboard and loft. All the lads who worked on the job were punctual, professional, and respectful of my property. All pipework has been cleanly and professionally fitted.
Customer in Hertfordshire Posted on 08/12/2023 , work completed 21/08/2023
AOS fitted a new processor for my power shower.
Customer Service
Quality
Value
I have been a customer with AOS for approximately 16 years when I took out a service plan for heating etc. On every single occasion I have telephoned I have been met with professional support staff who listened and organised everything possible to accomodate my needs. All the engineers or technicians that have attended my home are also professional, friendly and incredibly mindful of taking every possible care of my home whilst carrying out their work. Thoroughly recommend AOS and they are a local company that certainly ensures a personal service.
Customer in Hertfordshire Posted on 06/12/2023 , work completed 05/12/2023
AOS Boiler replacement
Customer Service
Quality
Value
We have used AOS to maintain our heating for years and have always found them to be punctual and efficient. The boiler change over was no different. They turned up on time and worked diligently throughout the installation and commissioning of the system clearing up as they went. Very pleased, thank you AOS.
Customer in Hertfordshire Posted on 14/11/2023 , work completed 09/11/2023
Installation of air source heat pump and full central heating system
Customer Service
Quality
Value
I found all the staff to be professional, approachable and friendly. Everything was explained to me and all my questions were answered promptly at all stages. The installers worked hard and did their very best to place the radiators in the places I wanted and made sure that nothing in my home was damaged. The work was carried out on schedule to a high standard. I would certainly recommend them.
Customer in Essex Posted on 13/11/2023 , work completed 10/11/2023
Outstanding Service
Customer Service
Quality
Value
Our old boiler was 18 years old had never gone wrong and was originally fitted by AOS but now was the time to upgrade. We choose a new boiler and had our house surveyed we were really confident with what he told us and went with his recommendation. We needed the boiler to be moved to a different location which was quite tricky but the Gas Fitters were great, were here on the specified day and very punctual and rarely took a break the job was completed on time and all safety checks were completed. I have always had a maintenance contract with them and would highly recommend them for there highly skilled fitters and the excellence of their work.First class Company.
Customer in Hertfordshire Posted on 09/11/2023 , work completed 08/11/2023
Outstanding Service
Customer Service
Quality
Value
Heat pump, cylinder and new radiators fitted. AOS have kept us informed all the way through the recent installation. They have been extremely knowledgeable and able to give clear recommendations without making us feel pressured into making decisions. From first meeting them we have felt confident in their ability to deliver to our needs and also that they understand the product. AOS have handled all of the paperwork for the government grant and we have been kept informed. All of the workforce that we have encountered have been polite, knowledgeable and keen to ensure our satisfaction with the work. I cannot recommend them highly enough for anyone considering a heat pump.
Customer in Cambridgeshire Posted on 07/11/2023 , work completed 06/11/2023
Happy customer
Customer Service
Quality
Value
The person who came to give us the quote assessed what we needed but explained the alternatives. I was confident with his experience. A new central heating boiler was installed, completed on time and to the original agreed price. There was very little disruption and the installers cleaned up after themselves. They were efficient and respectful. Buying a new boiler is a mine field but AOS made it easy
Customer in Hertfordshire Posted on 30/10/2023 , work completed 26/10/2023
Excellent Service !
Customer Service
Quality
Value
I have been using the services of AOS for over a decade now. I have found them to be very professional, polite, and trustworthy. Recently the boiler broke down and AOS replaced it with a new one within five days. The engineers arrived at the appointed time and finished the work on the same day. I have a maintenance contract with them and they have always provided excellent service. Highly recommended !
Customer in Greater London Posted on 25/10/2023 , work completed 17/10/2023
Highly recommended
Customer Service
Quality
Value
Very thorough and professional office management and support staff, highly knowledgeable lead consultant, and an experienced and meticulous team, who were clean and on schedule. A couple of minor follow up tasks needed were speedily dealt with. All the paperwork flowed through to me very quickly. The office immediately picked up the increase in the amount of the BUS grant which was announced just as my installation was about to get started, so that I could take advantage of that.
Customer in Hertfordshire Posted on 24/10/2023 , work completed 24/10/2023
Efficient Boiler Installation / Radiator upgrade
Customer Service
Quality
Value
The team arrived on the dot of 8.00 as promised. The team leader confirmed the work that needed to be done and allocated work to the team. Care was taken to ensure disruption was kept to a minimum and sheets were put down throughout the property to protect the carpet. They kept us informed about what they were doing and warned us when the water was about to be turned off. We've used AOS for many years and we have always found their engineers courteous and considerate. We would (and have) recommend them to anyone looking for plumbing / heating services
Customer in Hertfordshire Posted on 24/10/2023 , work completed 20/10/2023
A good experience
Customer Service
Quality
Value
I have had a service contract with AOL for approximately 27 years after they fitted a boiler all those years ago. A replacement boiler was ordered and fitted 2 days ago. The team of 2 men, Ryan amd Jack, came at the time arranged and proceeded to get the work done. They worked constantly throughout the day with good humour and courtesy in what is quite a small space. They moved items that I had forgotten to shift without complaint and replaced things after the work was completed. All packaging and rubbish were removed at the end. The workings of the boiler were explained to me and it was set up to the time specifications I suggested. The engineers came in a company van and wore clothing with the company logo on it. I like the fact that new staff are shown how the company works and their approach to helping the customer.
Customer in Essex Posted on 20/10/2023 , work completed 18/10/2023
Installation of air source heat pump
Customer Service
Quality
Value
AOS proved to be a worthy choice of supplier for the installation of our air source heat pump, two of which had to be incorporated. They stuck to their schedule and finished the work within the week. The service provided to us throughout the enquiry, confirmed order and installation itself was second to none. We have nothing but praise for the various personnel involved. The finished job is very impressive and although we haven't yet really had sufficient time to confirm that the system is living up to our expectations, we are extremely pleased that we did make the commitment and especially happy that we chose AOS.
Customer in Hertfordshire Posted on 19/10/2023 , work completed 13/10/2023
Air Source Heat Pump
Customer Service
Quality
Value
From the outset A O S have been professional and friendly. Nothing has been too much trouble for them. We wanted the pipework moved to a different location and it was all done within the installation. All of the staff we have come in contact with have been friendly, polite and have known what they where talking about. I would recommend AOS to anybody. The best company I have come across in a long time.
Customer in Buckinghamshire Posted on 04/10/2023 , work completed 07/09/2023
Great work and staff
Customer Service
Quality
Value
AOS removed the old boiler and water tank and fitted a combi boiler. AOS were recommended by a couple of neighbours and I couldn’t have been more pleased. From the installation admin. team to the installers, they were all great. Professional, efficient, polite and friendly. They explained everything and did a great job and all to the agreed timescale. I particularly want to mention Rhys and Kian who installed the boiler - they were just great - so helpful and efficient and polite. Also a mention to Jack who did the initial survey and to Lee who quality assured the work and to Lucy in the office. All, a great team whom I would highly recommend.
Customer in Essex Posted on 26/09/2023 , work completed 26/09/2023
5 Star Company. Thorough, Professional and Friendly Service
Customer Service
Quality
Value
We selected AOS Heating for the purchase and installation of a new Air Source Heat Pump system, after comparative quotes from several other companies. There was not much difference in quoted price, but AOS impressed by their professionalism and expert knowledge from day one. We needed to get planning permission, due to the proposed position of our installation and AOS stuck with us through the protracted planning process. The installation took four days from start to commissioning as planned, no delays, no cost overruns, all went like clockwork. The installation team were always punctual, professional and friendly, nothing was too much trouble. Our house was always left clean and tidy at the end of each day. The quality of the work looks to be superb. I would not hesitate to recommend AOS to any prospective purchaser and will be using them for servicing and any future plumbing or heating work.
Customer in Hertfordshire Posted on 26/09/2023 , work completed 01/09/2023
Great boiler installation
Customer Service
Quality
Value
Boiler installation carried out within the agreed time and budget. Friendly, helpful and considerate installers did a a neat and tidy job. As expected, the boiler is now working perfectly. I have used AOS for years, and have always been very pleased with their service.
Customer in Greater London Posted on 19/09/2023 , work completed 15/09/2023
Excellent Service
Cannot fault the service from all the staff at AOS from the office staff to the engineers. Informed every step of the way. The engineers arrived on time, very polite the boiler was installed very professionally. After the installation the engineers tidied up took everything away. Would highly recommend this company.
Brenda in Hertfordshire Posted on 07/09/2023 (Reviewer did not use service)
Faultless customer service
Customer Service
Quality
Value
Having had excellent service from AOS 22 years previously, I wanted to stay local again. I was not disappointed. Both Max and his two apprentices were polite, professional and extremely well-mannered. Communication was excellent throughout the fitting process as it was with the office staff both before and after fitting. Consideration was given to protecting carpets and flooring and they worked clearing up as they went along. After fitting, everything was fully explained in terms of use of the boiler and thermostat with the reassurance that if I still had difficulty, was assured that someone would help. I cannot recommend this company highly enough. Hopefully they will continue for many more years to come.
Customer in Hertfordshire Posted on 24/08/2023 , work completed 11/08/2023
Efficient and completed on time
Customer Service
Quality
Value
AOS have installed the heat pump in a very efficient manner. The engineers were very pleasant and left no mess clearing up after every days work. They were always very polite and courteous.
Customer in Essex Posted on 21/06/2023 , work completed 02/06/2023
Excellent Customer Service and Workmanship
Customer Service
Quality
Value
From the moment that we got in contact with AOS Heating to supply and install a Heat Pump, Cylinder and associated equipment etc. via a referral from a neighbour we were impressed. A technical specialist in their team went out of his way to understand our current system (which was a little unusual) and designed a system to meet our needs. A comprehensive survey and report all added to our feeling that we were dealing with a professional company. Calls to the company to ask questions during the pre-sale process were swiftly routed through to the appropriate person and we were left with confidence that we had a well designed system. Once it came to the installation, again we were impressed with the quality of the Engineers who came to our property. The workmanship was excellent and all of our questions were answered as the installation progressed. The team were polite and tidy and the finished pipework and layout in our loft space was excellent. The handover was comprehensive and the documentation and videos explanatory. We would have no hesitation in recommending AOS Heating to prospective customers.
Customer in Buckinghamshire Posted on 04/05/2023 , work completed 26/04/2023
BOILER INSTALLATION
Customer Service
Quality
Value
Have been a client of AOS for a long time and their service is always so very excellent - the whole team is a pleasure to deal with, I could not recommend them highly enough.....Simply The Best !
Customer in Greater London Posted on 26/04/2023 , work completed 26/04/2023
Excellent work
Customer Service
Quality
Value
I contacted AOS in order to replace my old oil-fired boiler with an Mitsubishi Ecodan 8.5kW. As part of the work, I also asked to remove the old water tank in the loft, replace the water cylinder and re-pipe three rooms. The processes of evaluation and installation went smoothly and I was accurately informed about every step. AOS addressed all my questions with precision and without delays. The installation was completed in five days, including a full day for testing, and my property was left clean. The new system seems to work satisfactorily and I am very pleased with the results. I can certainly recommend AOS as an excellent company.
Customer in Cambridgeshire Posted on 12/04/2023 , work completed 24/03/2023
Great Service
Customer Service
Quality
Value
AOS have just installed a new boiler into my house. From the start they were very professional offering advice on the best solution and installation for me. The installation took two days and the engineers were very professional and very tidy.
Customer in Hertfordshire Posted on 16/03/2023 , work completed 14/03/2023
Amazing amazing amazing!
Customer Service
Quality
Value
What can I say about AOS! We started using them in 2013 when we moved to the area that they covered and haven’t looked back since. We recommend them to all of our friends and family! They are a wonderful company! Great work ethic, leave the areas they work in tidy at the end of the day. Explain everything they are doing. The admin team are outstanding! All staff are friendly and helpful! Thank you for everything that you do every single day!
Customer in Hertfordshire Posted on 04/03/2023 , work completed 13/02/2023
Would highly recommend for heat pump installations
Customer Service
Quality
Value
We were in the process of buying an off-mains gas property that previously had an expensive direct electric boiler and central heating system. Before exchanging I was keen to ascertain if an Air Source Heat Pump solution would be viable at the property, how much it might end up costing, and the potential efficiency savings vs direct electric. I had come across AOS through both highly rated online reviews - and a friend's father-in-law who had also had an ASHP system fitted by AOS the previous year and also had very positive things to say about the company and their experience. From booking in an initial phone call with their technical surveyor Lee Wildego who took the time to answer all my initial questions in great detail - to the heat loss survey which led to a competitive quote - through to the installation team who were friendly to have around the house and super tidy in their work, alongside all the post-commissioning aftercare to ensure the ASHP was running efficiently - I found AOS excellent, honest and reliable to deal with throughout. Wouldn't hesitate to recommend AOS to anyone that's looking to see if an ASHP solution is viable for their home.
Customer in Buckinghamshire Posted on 03/03/2023 , work completed 09/12/2022
Fast & Excellent Service
Customer Service
Quality
Value
We were bowled over by the service provided by AOS when our boiler developed a fault. From the call made at 9.15 a.m. until the new clock was fitted to the boiler by Jack at 10.30 a.m. This is why we have remained a customer of AOS as the service is second to none. Much appreciated, Mr & Mrs Lucas
Customer in Hertfordshire Posted on 15/02/2023 , work completed 10/02/2023
Air source heat pump installation
Customer Service
Quality
Value
AOS have installed a Mitsubishi air source heat pump, hot water cylinder and upgraded a number of radiators. The process from initial contact to final commissioning was completely seamless. AOS managed the government grant application process on our behalf which made life very easy for us. A key element of the process was the initial heat loss survey; the survey and the resulting heat loss report were both thorough and comprehensive. AOS also present the heat loss report to the heat pump manufacturer for their approval too. This process really gave us confidence that we were dealing with a very experienced organisation and thus made for a very easy buying decision. All of the on-site and off site teams have been incredibly helpful, highly skilled and really friendly. We are very pleased with the quality of the installation, the timescales were accurate and the costs were on budget. I would highly recommend AOS to anyone thinking of heating system upgrades and installs.
Customer in Central Bedfordshire Posted on 27/01/2023 , work completed 26/01/2023
Super job
Customer Service
Quality
Value
Went with AOS for a heat pump install because the reviews are so good. It has been installed for almost a month now and all is working well. The process from start to finish was made very easy by AOS, right from when I first contacted them for advice and through the various visits and installation stages etc. I asked a lot of technical questions and their responses were always prompt, clear and helpful. Can’t fault them really!
Customer in Cambridgeshire Posted on 02/01/2023 , work completed 13/12/2022
Excellent Service from AOS at every step
Customer Service
Quality
Value
We needed to have a new air source heat pump installed as our heating was not working effectively with our old one, not great timing when -8 degrees outside and just before Christmas. AOS were extremely helpful, knowledgeable and professional, from the start of reporting our issues to the really helpful reception service team to the excellent installation engineers and team and follow up care. They were prompt and extremely helpful in our hour of need, I can't fault them, brilliant every step of the way and would thoroughly recommend them. We have a warm house for Christmas and we can't thank them enough.
Customer in Buckinghamshire Posted on 23/12/2022 , work completed 19/12/2022
Great service from an excellent company
Customer Service
Quality
Value
We contacted AOS to discuss the installation of an air source heat pump on the recommendation of a friend. Like them we have been delighted with our experience of working with the company. From the initial contact through subsequent surveys, discussion of our needs, liaising with various authorities and the installation of the system AOS were helpful, efficient and professional in their approach. We elected in addition to the heat pump to have a new cylinder and quite a few new radiators so it was a relatively large job but the installation team were exemplary in minimising disruption for us. Throughout the work the installation team were friendly and courteous and did a great job. We are delighted with our new system and would happily recommend AOS to friends and family.
Customer in Cambridgeshire Posted on 08/12/2022 , work completed 22/09/2022
A replacement air source system
Customer Service
Quality
Value
The work was carried out to the agreed schedule and on budget. The quotation and handling before the work started was good. I used the same trader to install the air source system 10 years ago and they were responsive and professional to deal with over the ten years. I chose them therefore for their proven record of providing good aftercare. The engineer (and his assistant ) were helpful during the two days of installation. They talked me through the various instructions I needed to know in order for me to be confident to work the system. They were extremely good at tidying up at the finish which was appreciated.
Customer in Hertfordshire Posted on 24/11/2022 , work completed 24/11/2022
Really pleased , great company
Customer Service
Quality
Value
Our old boiler has been kept going by AOS but was old and finally gave up. I have the service plan so they came within the hour to have a look. Jack made it safe but told us we needed a new one. They were in touch the next day and the new boiler was installed on the Friday of the same week. Very happy and would recommend them to anyone. I have always been very happy with all their engineers.
Customer in Hertfordshire Posted on 08/11/2022 , work completed 21/10/2022
AOS Heating
Customer Service
Quality
Value
AOS saved the day in as far as boiler failed to work Wednesday morning, AOS were on site within 90mins, confirmed boiler not repairable and quote prepared same day. I explained my health restrictions and they arranged for a 3 man team to fit a new boiler and other works on Friday. 48hrs from boiler failure to fitting a replacement and then real patience in explaining the remote control system. Outstanding service.
Customer in Hertfordshire Posted on 07/11/2022 , work completed 04/11/2022
Excellent Heat Pump Installation
Customer Service
Quality
Value
AOS installed an air-source heat pump for us in September 2022. We had some outstanding making good and technical issues following the installation which they resolved quickly. The work was done to the agreed schedule and cost and the company also arranged for the application for a government grant to help pay for the work. All the staff from the initial sales visit to the very comprehensive survey, installation and problem resolution, both those visiting our property and those we dealt with on the phone, were excellent. The engineers who came to the house were tidy, respectful of our home, quick and effective in their work. I would have no hesitation recommending this company - in fact, we heard of them from neighbours who all had only positive things to say about AOS.
Customer in Cambridgeshire Posted on 19/10/2022 , work completed 23/09/2022
Very Impressed
Customer Service
Quality
Value
The engineers were prompt, did exactly what they said they would do. Extremely helpful and tidied up after themselves. Also very patient with us.
Which? Trusted Traders Consumer Posted on 13/10/2022 , work completed 07/10/2022
Stress-free instalation
Customer Service
Quality
Value
We had an Air Source Heat Pump fitted by AOS last week, replacing an oil boiler. Despite our cottage being old with new extensions and therefore slightly out of the ordinary, the installation team, led by Kian, did an amazing job and worked really hard. Kian and Sam were with us all week and were excellent at keeping us informed of progress and explaining what was happening. They, together with Reece and Luca were a pleasure to have in our house. The job was done efficiently and skilfully and they were very focused on ensuring all our needs/queries were met. The whole experience was very positive and we would highly recommend the Company.
Customer in Posted on 10/10/2022 , work completed 07/10/2022
On time and professional
Customer Service
Quality
Value
3rd year as a customer with this company. Annual service of Air pump system done today. Engineer was on time, thorough and gave good advice on adjustments to system settings
Customer in Milton Keynes Posted on 05/09/2022 , work completed 05/09/2022
New Air Source Heat Pump
Customer Service
Quality
Value
AOS installed a new heat pump to replace an old oil boiler. The whole process was easy from start to finish and the installation team did a brilliant job. They were super efficient, quick and friendly. Highly recommended!
Customer in Cambridgeshire Posted on 09/08/2022 , work completed 30/06/2022
Excellent service throughout
Customer Service
Quality
Value
We have wanted to install an air source heat pump (ASHP) for several months following the sharp rise in our forecast energy costs (we had both gas and electricity costs). Having looked around for companies in our area (south-east) we decided to go with AOS because of the consistently good reviews they had received. We were not disappointed. Every aspect of their work was utterly professional - Ryan and his installation team were punctual (waiting outside to start work before 8am every day), polite and courteous, and very hard-working, especially given the very hot days we had whilst they were here. Also, their workmanship was top class. I'm not a plumber or heating engineer but the finished installation, both the outside ASHP and the indoor cylinder (in loft) were so neatly laid out and finished off, as were the five new radiators we chose to have to improve the performance of the overall system. The workings and control of the heat pump were explained to us, and everything seems to have been working well since the commissioning date. A word also for the engineer (Lee Wildego) who carried out a very detailed survey of out property prior to the installation team's arrival, and to Charlotte and Lucy at AOS for always being so helpful with my endless questions and queries. Overall, I would recommend AOS without any hesitation.
Customer in Hertfordshire Posted on 09/08/2022 , work completed 04/08/2022
Good Service and communications
Customer Service
Quality
Value
We already use AOS for our Heating and Boiler Service plan and have always been pleased with their work and so we were happy to use them to install a new boiler to replace our previous one. The estimater gave us a clear idea of what we needed and what work was to be done. The Estimate was competitive. The work was carried out on the agreed date efficiently and we were left with clear instructions how to use the new boiler and the Hive controller. We would recommend AOS to anyone else needing a new boiler.
Customer in Greater London Posted on 03/08/2022 , work completed 25/07/2022
Great installation job - really neat, tidy and effective
Customer Service
Quality
Value
This is the second time that I've used AOS Heating. They installed a 14kW Mitsubishi Ecodan ASHP in our previous house four years ago, which drastically reduced our heating bills. We just done this again in our new house and are very pleased with the installation. The pipework and electrics have been so neatly done. Very helpful and polite team of installers. If we move house again, I'll use them again, no hesitation.
Customer in Cambridgeshire Posted on 02/08/2022 , work completed 28/07/2022
Efficient and effective service throughout
Customer Service
Quality
Value
AOS provided an efficient and effective service from start to finish exceeding our expectations. The surveyor provided sound advice and guidance making us aware of the system requirements. The installation team were prompt, professional, polite and helpful whilst Charlotte and Lucy in the office kept us fully informed and steered us through all the paperwork. I have no hesitation recommending this company.
Customer in Bedford Posted on 12/07/2022 , work completed 08/07/2022
Excellent service
Customer Service
Quality
Value
I’ve had heating cover from AOS for a few years after bad experiences with BG. In contrast, AOS doesn’t try and condemn your boiler each year and their engineers come on time, are tidy and do what they say they will. There was a real test a few days ago for them. Just before a Bank Holiday, the hot water stopped working and I saw a leak near the boiler. The phone was answered by super-efficient Abbie who was rapidly able to ascertain what the problem was and arrange an engineer visit the next day. I don’t usually buy extended warranties or maintenance plans but I wouldn’t be without AOS cover and am sure they apply the same standards to one-off jobs.
Customer in Essex Posted on 16/06/2022 , work completed 01/06/2022
Work at 91 Cowper Crescent
Customer Service
Quality
Value
The initial callout, not an emergency was completed very much to our satisfaction within 3 hours, from this a recommendation was made by the engineer to make a modification , to eliminate the problem occurring again. This work was carried out at the date and time agreed, once again to our satisfaction. All this work was carried out under our maintenance contract. This a can do firm and has been for the last 20 years to my knowledge
Customer in Hertfordshire Posted on 12/05/2022 , work completed 12/05/2022
Air Source Heatpump installation
Customer Service
Quality
Value
Having moved to an old house with a very old oil boiler we were delighted to be recommended AOS by friend of a friend as a solution to heating the house. Had it not been for them we would have doubted that such a system would be possible for the house, albeit we were comprehensively upgrading and renovating. From the outset, the company was courteous, and prompt and answered the many queries that arose from the planning stage to the final commissioning. They liaised with our plumber and electrician to ensure the installation was as seamless as possible. In addition, they helped overcome supply problems to ensure the system was installed so that we could take advantage of the government Renewable Heat Incentive deal that was closing at the end of March 22. So far so good, but as energy prices rise, it is a system that one needs to get to understand, with its multiple thermostats and timing options.
Customer in Hertfordshire Posted on 20/04/2022 , work completed 17/12/2021
Air Source Heat Pump installation
Customer Service
Quality
Value
Everyone in AOS from start to finish were very helpful, willing to discuss and answer all my questions politely and patiently, and the process went completely to plan. The team of young guys were always punctual, polite, worked competently and knowledgeably. I was very pleasantly impressed to see such a young team doing such complicated and responsible work completely confidently. The pump is now installed and is working as it should be. I am very pleased with the whole installation process and felt I was in good hands the whole time. I had solar panels installed earlier to help with the running cost of the pump.
Customer in Cambridgeshire Posted on 10/04/2022 , work completed 07/04/2022
Top class service
Customer Service
Quality
Value
Aos have always given me great service over the many years I have used them. I had a combi boiler installed 5+6 April and am very pleased with the work done. Would recommend AOS to anyone
Customer in Greater London Posted on 08/04/2022 , work completed 06/04/2022
Never Disappointed
Customer Service
Quality
Value
We have been a long term customer of AOS and always happy with their service. When our old boiler reached its end-of-life, (supplied and installed by AOS nearly 20 years ago), AOS provided a competitive quote for a replacement, offered an installation date within a few days, arrived on time, carried out a nice neat installation, tested and talked us through the new boiler operation. Engineers always very personable and ready to answer questions and listen to any concerns.
Customer in Hertfordshire Posted on 06/04/2022 , work completed 01/04/2022
Air Source Heat Pump installation.
Customer Service
Quality
Value
I totally recommend AOS if you’re thinking of installing a Heat Pump. From start to finish I had complete trust in the company and I must also give a mention to Ryan and his team who installed the pump over four days. They were knowledgeable, punctual, pleasant and cleared up every day.
Tina in Greater London Posted on 10/03/2022 , work completed 10/03/2022
Excellent service.
Customer Service
Quality
Value
The service provided was very professional and thorough. Prior to installing a new boiler, the engineers tried very hard to mend the previous one. Sadly it wasn’t to be and the decision to replace was made. Having been without heating for several days, the company strived for a quick installation to minimise our discomfort. The installation went smoothly, the workmen were very careful and respectful of my brand new floor. They worked quickly and efficiently, clearing up after themselves. We are delighted by the service that AOS provides and have no hesitation in recommending this company for both maintenance and installation of heating equipment.
Customer in Hertfordshire Posted on 28/02/2022 , work completed 25/02/2022
So impressed with AIS
Customer Service
Quality
Value
We had been thinking about changing from oil fired heating to an Air Source Heat Pump, and decided on using AOS following a recommendation from a neighbour and reading very positive reviews online. The whole process was so simple with AOS staff giving us advice on preparing the house, applying for the RHI grant etc. The work was carried out in 4 days and I was delighted by how efficient and clean the engineers were. Our new heating is fantastic and we’re delighted - many thanks to our engineers and to Lucy and Charlotte in the office
Customer in Cambridgeshire Posted on 09/02/2022 , work completed 03/02/2022
Highly professional team
Customer Service
Quality
Value
Installing a heat pump is more complicated than a boiler but AOS were extremely supportive and professional through this process. All the staff I encountered had the same helpful attitude and the standard of the final work was exceptional. First time a plumber has labelled all the consumer facing switches and sockets. Great support with the associated paperwork as well. Very strongly recommend.
Customer in Hertfordshire Posted on 09/02/2022 , work completed 04/02/2022
A most efficient company.
Customer Service
Quality
Value
AOS installed an air source heat pump. Initial visits were made to ensure we understood the system and how it would work for us. A survey was done with recommendations on what alterations were needed to our existing radiators and hot water tank. No pressure was put on us to go ahead with the work with the result that we had time for reflection. Questions that we had were always answered promptly. An installation date and price were agreed and both were adhered to. The installation team arrived promptly, were knowledgeable, polite, competent and hard working. Once installed, the system was explained fully to us, with a number to phone if there was a problem. There were none and we don't expect there to be, but are confident that AOS will be there for us in that unlikely event.
Customer in Hertfordshire Posted on 04/02/2022 , work completed 27/01/2022
Air Source Heat Pump installation
Customer Service
Quality
Value
We contacted AOS on 11th January this year for an initial enquiry about an air source heat pump installation at our house. I had found them on the Which Trusted Traders site and subsequently received a very positive recommendation from a friend who had a heat pump installed by them. From my initial call through to completion of the installation today, we have found the company a pleasure to deal with. Based on our EPC information the staff were able to send me an initial proposal, with some options for us to consider re-replacement of radiators and hot water tank. This document also gave us a very good idea of the whole process but was subject to a full site survey. The surveyor did a very thorough job, explained everything to us clearly and after some further discussions we were sent a firm proposal, which was again thorough and set out all the costs, payment terms and other considerations very clearly. On accepting the proposal a date was arranged for the installation as soon as possible to give us time to apply for the RHI scheme. The installation team arrived at 8am 'on the dot' and completed the complex operation over three and a half days in a highly professional manner, taking great care to protect the flooring and clean up thoroughly after each day's work. I am confident that the after sales service will be as good as our experience with AOS so far suggests, and we would thoroughly recommend this company to anyone considering a heat pump installation.
Customer in Hertfordshire Posted on 03/02/2022 , work completed 03/02/2022
Installation of an AOS heatpump
Customer Service
Quality
Value
I was recommended AOS by a friend who had used AOS for the installation of her heat pump, and I am totally satisfied with her recommendation. When I expressed an interest in AOS, someone came to explain what would be involved and when I said I wanted to go ahead, I paid a deposit and someone came to do a full heat-pump survey. I accepted the recommendations of installing new radiators and work started in January. I was told it would last about three days and it did. The men who came seemed very efficient, hard-working, competent and polite and were easy to have around the house. When a different trade, e.g. an electrician was needed he came on time, so there was no hold up. The workmen tidied up each evening and vacuumed thoroughly. I have now been left the paperwork for applying for the RHI. A firm to be thoroughly recommended.
Marie in Cambridgeshire Posted on 31/01/2022 , work completed 27/01/2022
Knowledgable and delivered what was promised
Customer Service
Quality
Value
Compared three three air source heat pump installers, one wanted £471 for a survey which would only be taken off the final bill not leaving us with a choice of supplier and they quoted without visiting the property, the second visited and quoted but was a Daikin supplier and the estimated RHI funds would of been lower. The first company also estimated RHI higher than AOS because they quoted a system with higher water temperature. AOS stated they would install at 45 degrees and guarantee temperatures as per the heating engineer survey so the RHI estimate was higher. So we went ahead over four days they removed the old LPG boiler installed the heat pump replaced most radiators and upgraded our electric RCD unit. We had some small issues with the plastering, a leaky value and fine tuning the bathroom temperature but AOS quickly return and fix all these issues. The actual RHI was a just few pence lower than estimated, but significantly higher than other estimates and the one off payment replacement scheme coming in March. The RHI will greatly assist with the electricity bills over the next seven years. So AOS was not perfect but very good and delivered. I was concerned about, reaching the temperatures in the rooms, the hotness of the hot water and the energy consumption. Most rooms exceed targets and the values are turned down, the bathroom makes the target of 20 degrees, now adjustments have been made. The hot is piping hot, the energy consumption seems about right.
Customer in Cambridgeshire Posted on 24/01/2022 , work completed 23/12/2021
New Non Standard Boiler Installation
Customer Service
Quality
Value
Our boiler failed terminally on Boxing Day 2021. We knew our old boiler & pipe work were non standard & more often found in commercial properties & so several companies declined to help. Initial contact with AOS over the Xmas & New year holidays was understandably slow but on Tues 4th Jan 2022 they gave me a survey date of Thur 6th Jan. They arrived on time and despite the unusual setup seemed happy to take on the job & a quote arrived the same day. We feared the worst but it was very reasonable. Work began on 11th Jan & the 1.5 day estimate took 2 days due to the complexity. We are very happy with the result. The engineers were polite, tidy, explained what they were doing & why, took away the old boiler and all rubbish & cleaned up well. They replaced several items they had not specifically quoted for at no extra cost and clearly explained the operating instructions. There were two things that perhaps could have been better. The first was a little confusion over the removal of the old roof flue and tile repair. We thought the engineer said they would do that but it turns out there was some miscommunication & they recommended it be done by a roofing specialist to ensure integrity of the roof tiling. Once explained it was clear & made sense. The other minor issue was we thought the wall filling where the old timer control was removed could have been better.
Customer in Hertfordshire Posted on 20/01/2022 , work completed 12/01/2022
One hundred percent positive experience from start to finish.
Customer Service
Quality
Value
A neighbour of mine introduced me to AOS and I began my journey switching from Oil to ASHP. I procrastinated about the switch for some time. AOS were patient and always happy to discuss my concerns around pump placement, noise levels, efficiencies, etc. Eventually, I pulled the trigger and AOS were an absolute pleasure to deal with. Every person I’ve spoken to within the company has been friendly, courteous and professional. The install team were fantastic. As for the ASHP, I needn’t have worried, it’s super quiet, keeps the house toasty and quite frankly, I should’ve switched sooner. It’s so quiet we don’t even know it’s on. Our radiators are now quiet too. If you are on the fence then don’t hesitate like I did, you won’t regret it. ASHP works and AOS Heating are without question a company you can trust to ensure you have a great, smooth and trouble free experience. I cannot recommend them highly enough.
Customer in Buckinghamshire Posted on 15/01/2022 , work completed 06/01/2022
Excellent local company
Customer Service
Quality
Value
I have been with this company for the past four years. They installed my boiler hassle free and good value for money. Excellent service and AOS have continued to provide after sales support. If any issues arise they always provide prompt efficient service. First rate company who I cannot fault in any way.
Customer in Hertfordshire Posted on 08/01/2022 , work completed 08/01/2022
Excellent work and highly trustworthy and competent team
Customer Service
Quality
Value
I wanted to replace a boiler with an air source heat pump system. I sought several quotes and weighed up the balance of quality and cost before ultimately going with AOS. This involved installing an Ecodan heat pump, new radiators, a pressurised hot water cylinder, and also replacing a huge amount of the plumbing. I could not be happier with the decision. AOS' engineers (including Lee Wildego) were all excellent, as were the team online (including Charlotte Owen). They were thoughtful and kind, and never patronising about questions. They were thorough and careful. They accommodated a variety of requests wherever they could manage it (including removing a heavy item from the loft and installing a new shower). When the work was done, they left the house in excellent condition. They arranged a follow up check at around a month, which was also excellent. Appropriate covid measures were followed where required. The experience from start to finish was reassuring and highly competent. I would not hesitate for a moment to recommend all members of this team.
Customer in Greater London Posted on 14/12/2021 , work completed 06/09/2021
New boiler project
Customer Service
Quality
Value
Everything about the project to replace my old back boiler was excellent. Lee talked us through how we might execute the installation where other companies has just shrugged and said it would be difficult. Patiently explored different options ofr location and pipe runs without just opting for the easiest. Fitting team of (Different) Lee and Brad were extremeley professional, did a very neat job of the installation and most importantly were very respectful of our home. The team was also flexible in that we changed one of the rad specs late in the day but they were very accomodating. I started out a little trepidatious about getting a new installation but am now convinced we did the right thing. Could we have got this done cheaper? I dont know but for the care and professionalism I think we got very good value for money.
Customer in Hertfordshire Posted on 24/11/2021 , work completed 18/11/2021
Replacement boiler and heating system.
Customer Service
Quality
Value
After seeing my neighbour having AOS Heating to replace his boiler and seeing there workmanship I decided to request a quote. The surveyor was very helpful explaining the different options available. The quote was itemised covering every detail. I agreed the quote and the office staff contacted me for a convenient 2 day slot. Lee and apprentice Sam arrived at 8 am and cracked on removing all the old system having first laid down mats and sheets to protect the stairs and floors, I was amazed how much they got done on the first day. The whole job was completed by the 2nd day afternoon, tested, made good etc. Home was left clean and heating and hot water all working satisfactory. I would thoroughly recommend AOS Heating.
Customer in Hertfordshire Posted on 16/11/2021 , work completed 10/11/2021
Thoroughly Professional Job
Customer Service
Quality
Value
AOS replaced our oil-fired boiler with a heat pump in October 2021. At our request, they also replaced most of the radiators and installed a full set of thermostatic radiator valves. The process from initial discussions to completed installation took nearly four months, but part of this delay was caused by the need to obtain a satisfactory EPC certificate so that we could apply for a government grant. AOS were very good at ensuring that we complied with all the relevant regulatory requirements. This was a complex project but it was carried out very efficiently. Their staff were always courteous and helpful, and during the installation they left the house clean and tidy at the end of each day. We were left with the feeling that this had been a thoroughly professional job. We chose AOS because several of our neighbours had recommended them to us. We would have no hesitation in providing similar recommendations in the future.
Customer in Hertfordshire Posted on 27/10/2021 , work completed 11/06/2021
Excellent service
Customer Service
Quality
Value
We have used AOS for about fifteen years. Recently we had to have the very old water tanks in the loft replaced. Tony and Jack arrived punctually and laid down dust sheets. They worked all day with as little disruption to us as possible. It was good to see Jack, the young man, gaining knowledge and experience, working with Tony, the senior professional. They did an excellent job and left everywhere clean and tidy. All of the staff of AOS that we have encountered over the years have been helpful, efficient and polite. I would not hesitate to recommend the company.
Pearl in Hertfordshire Posted on 12/10/2021 , work completed 29/09/2021
Professional installation of replacement of old gas boiler.
Customer Service
Quality
Value
My gas boiler needed replacing following an annual service check by AOS which highlighted a problem necessitating its replacement. The installation was carried out by Tony Owen and Sam and was planned to be completed in one day. They arrived promptly at the scheduled time and carried out the work efficiently and within the timescale. They ensured that my property was protected with dust covers where ever they had to work ensuring that the materials were located without hindrance to me. At the end of their work, Tony explained to me what they had done during the installation, highlighting a small electrical problem which meant a further return visit to resolve at a later date. He went through the documentation he left with me. Sam was very courteous when wishing to use some cleaning facilities to assist him in tidying up before they finished to leave. Altogether, very professional and efficient work carried out by AOS and would highly recommend them.
Customer in Hertfordshire Posted on 24/09/2021 , work completed 24/09/2021
Installation of and air sourced heating pump, etc
Customer Service
Quality
Value
We used AOS Heating who are based in Cheshunt. We arrived at a quote that we agreed on and which was kept to. The installers arrived when they said they would, 8.00 am, worked all day except for a 20-minute lunch and left between 4.00 and 4.30 pm. They agreed with us what would happen were as new radiators had to be installed as well as the pump, piping and a new immersion tank. They worked cleanly vacuum cleaning at the end of each day. The work was completed on time. The men who came were polite and pleasant company when we chatted to them.
Customer in Hertfordshire Posted on 09/09/2021 , work completed 26/08/2021
New gas boiler
Customer Service
Quality
Value
1st classwork from AOS in installing our new gas boiler, Tom, Kian & Jack provided excellent work throughout keeping me informed of everything that was happening as they went. Would definitely recommend AOS for anyone needing a new boiler.
John in Hertfordshire Posted on 25/08/2021 , work completed 12/08/2021
Air Source Heat Pump Installation
Customer Service
Quality
Value
AOS did everything as expected with all staff extremely helpful and friendly and the attention to detail was very good.
Richard in Hertfordshire Posted on 06/08/2021 , work completed 05/08/2021
Ongoing service
Customer Service
Quality
Value
When my husband and I needed a considerable amount of plumbing and electrical work done to our home in 2008 we looked for a local company and AOS were recommended to us. From day one we were impressed by the efficiency of the work and the consideration of the workforce. We have a service contract with them and have always found their engineers to be punctual, courteous, and knowledgeable regarding all aspects of their work. We would not hesitate to recommend them.
Mr & Mrs Shepherd in Hertfordshire Posted on 04/08/2021 , work completed 02/08/2021
Air Source Heat Pump Installation
Customer Service
Quality
Value
AOS EEHS Ltd installed an Ecodan air source heat pump and Grant cylinder in our property. We were impressed with how thoroughly the survey was undertaken and our questions addressed. They promptly provided all the information required to support our Green Homes Grant and Renewable Heating Initiative applications. The office support staff were very helpful in this respect, explaining the options and requirements. The installation appears to have been carried out to a high standard. This included re-routing power cables, removing gas pipes and the old boiler, upgrading radiators and, of course, finding suitable pipe access points to plumb in the heat pump. They took measures to keep costs down by re-using some of the old radiators in smaller rooms to avoid replacing like-for-like. The installation team were thorough and professional. They were good at cleaning up after themselves, so that there were no issues at the end of each day. They made good the areas where parts of the old system were removed. It is still summer, so time will tell how well the heating works, however the hot water system generates more than enough water for a days use.
Customer in Hertfordshire Posted on 28/07/2021 , work completed 08/07/2021
Exactly what it said on the tin
Customer Service
Quality
Value
AOS' sales explanation of what we would get and how it would work was clear and comprehensive. Their quotation covered exactly what we had asked for and offered a reasonable price. Their offered installation date was well within the timeframe they suggested initially. They arrived on time with all the correct materials (barring one radiator which was the wrong size, quickly corrected), and did a very competent installation job within the time they said it would take. They were polite, helpful and hard-working throughout, and made a good job of tidying up after themselves. So far the system works as expected. I would recommend AOS to anyone looking to convert to a heat pump.
Andrew in Cambridgeshire Posted on 09/07/2021 , work completed 02/07/2021
Outstanding product, excellent service, reasonable price
Customer Service
Quality
Value
Excellent service from first enquiry to post installation paperwork. Installation crew were superb - courteous, efficient, tidy and punctual. Questions were answered quickly and patiently and price was reasonable. All in all, a very positive experience so I can't ask for anything more!
Adrian in Hertfordshire Posted on 02/07/2021 , work completed 01/07/2021
Excellent Service
Customer Service
Quality
Value
Friendly, efficient staff in the office. Service staff arrived on time, did a careful and efficient boiler installation, removed old boiler and cleared up afterwards. Couldn't have asked for better service.
Deborah in Greater London Posted on 28/06/2021 , work completed 18/06/2021
Great efficient service.
Customer Service
Quality
Value
As a long standing customer of AOS, I am always surprised at the quality of the service they maintain. I would highly recommend their fast efficient service. Tony and Bradley installed our new boiler quickly, efficiently and went through all the instructions with us needed.
Customer in Hertfordshire Posted on 24/06/2021 , work completed 24/06/2021
Great work. Fast and very tidy. Polite and helpful.
Customer Service
Quality
Value
AOS have just completed ripping out our Ducted warm air heating system and installing a standard boiler/radiator system. They also removed the hot and cold tanks in the loft, and most rooms had to have the floors pulled up to run the pipes in. During the initial survey we were given the option of various different Boilers and radiators and explained the benefits of each. We did change our mind during the quote process a few times but this was dealt with helpfully and professionally by the office team. When the work started, I was expecting a really messy job given what needed doing, but every day they covered things up with dust sheets and hoovered up when they were done. Once the work was completed all the floors were made good and carpets re-laid in a very tidy manner. To look at the house now, you wouldn't know they had been here. The work was completed a day early and to the agreed price by a helpful polite and professional team.
Andy in Hertfordshire Posted on 04/06/2021 , work completed 04/06/2021
AOS heat pump installation
Customer Service
Quality
Value
I would like to compliment AOS on the manner in which they informed me at the quotation stage and the efficient way their team installed the heat pump immersion tank and radiators in time frame that they quoted.The system is up and running and the house is warmer than it has ever been. So thank you and keep up the good work AOS
John in Buckinghamshire Posted on 26/05/2021 , work completed 21/05/2021
The trader replied (on 27/05/2021)
Hi John, Thank you very much for your lovely review. I notice that for customer service you rated us a 4/5 may I ask if you have any feedback relating to this that may help us improve our customer service for the future? Kind Regards The AOS Heating Team.
Ideal trader
Customer Service
Quality
Value
From initial contact to end of work AOS have bee an ideal company to work with. Totally professional. Contracted work completed to schedule, full support from office staff and each and every person involved wth actual installation. I would confidently recommend the company.
Peter in Central Bedfordshire Posted on 24/05/2021 , work completed 14/05/2021
Installation of Air Source Heat Pump
Customer Service
Quality
Value
An excellent job all round. A friendly, administrative approach to begin, with a visit (during lockdown) from an efficient surveyor to assess the project, quickly followed by a clear comprehensive quotation. After contract confirmation, helpful advice on the grant application, with the admin team keeping us up to date on all matters prior to the installation date. The team of plumbers/ engineers arrived on time on the expected date, (and on the following two days) and got on with the project in a well organised and efficient manner. At the end of each day, they packed away and cleaned up all areas before departure. At all times they were polite and careful of our home and kept us informed. Once the installation was complete, the team leader gave us a comprehensive guide to the system. Following settlement of the invoice, the office team have forwarded the relevant documentation and warranties. Unfortunately, the GreenHomes Grant office were not so efficient, the voucher arriving to late to be used, almost 4 months after application.
Customer in Buckinghamshire Posted on 17/05/2021 , work completed 12/05/2021
Fully lived up to our expectations
Customer Service
Quality
Value
We were introduced to AOS Energy Efficient Heating Systems Limited by a previous satisfied customer of theirs. We needed to replace an oil-fired CH boiler which was over 40 years old and the idea of going fully electric was very attractive, especially with the Government's green incentives and the fact that with a heat pump you get out more than you put in. We made enquiries of several friends and neighbours who had used AOS to make similar conversions, and they were all enthusiastic. "Very clean and tidy", "extremely good plumbers" were typical comments. We found AOS's approach to be very open and honest about issues and possible problems; above all, they are specialists in this field and we felt confident that they knew what they were doing. The date for the start of the installation arrived, and AOS were there on time, began work with no delays and completed on schedule. So the comments we had received turned out to be no exaggeration. Since the system was commissioned we have had no problems and the house has been warm and comfortable despite recent cold weather, including hailstorms!
Tony and Annie in Cambridgeshire Posted on 14/04/2021 , work completed 01/04/2021
The trader replied (on 15/04/2021)
Hi Mr & Mrs Coe, Thank you for your kind words. We are so pleased that you are very happy with your new heat pump system and the service you received throughout the process. We will be sure to pass on kind comments to the whole team. Kind Regards The AOS Heating Team.
Replacement of oil fired boiler heating system with an air source heat pump
Customer Service
Quality
Value
AOS Heating replaced our oil fired boiler with an air source heat pump. They also replaced the hot water tank and all the radiators. Prior to installation we were debating our choice of radiators and AOS Heating helped our decision making process by answering many questions we had and providing feedback on potential alternatives. The AOS Heating team that undertook the installation were punctual, courteous and completed the work when they said they would. As the work was undertaken during pandemic restrictions, the team were careful to adhere to social distancing and were very respectful of an elderly relative in the house and worked around him with minimal impact. Each day the installation team answered our questions patiently and did a clear handover when the installation was completed.
Craig in Central Bedfordshire Posted on 11/04/2021 , work completed 01/04/2021
The trader replied (on 15/04/2021)
Hi Mr Scott, Thank you very much for your review it is really appreciated. We are glad that you are pleased with your final radiators choices and were more than happy to assist throughout the decision making progress. We are also very happy to hear that the installation team were attentive to your needs during the install. We will be sure to pass your lovely comments onto the whole team. Kind Regards The AOS Heating Team.
Works completed as promised
Customer Service
Quality
Value
We are very pleased with the efficient manner in which the whole operation was conducted, particularly with Ryan and his team and their professionalism and work ethic. They couldn't have been more helpful with everything including clearing up on a daily basis. The office team, Charlotte & Sian, were equally on the ball and were able to provide us with answers to all of the questions we raised. We have no hesitation in recommending the AOS team.
Jane & Martin in Buckinghamshire Posted on 10/04/2021 , work completed 08/04/2021
The trader replied (on 15/04/2021)
Hello Mr & Mrs Kempt, Thank you very much for your kind words. It is always so lovely to be able to pass on such positive feedback to our installation engineers and office teams and they really do appreciate it. Kind Regards The AOS Heating Team.
Excellent Professional Service
Customer Service
Quality
Value
Sam and his team installed a large air source heat pump, installed 18 radiators, converted two water cylinders into one all whilst working round an oil fired boiler that had to be retained for other purposes. They were on site when they said they would be and always tidied up at the end of the day before leaving. There were many unforeseen challenges along the way which were overcome without quibble or additional cost. At the end of every day, we were updated with progress and goals for the following day. In addition, we were given plenty of advanced warning for when we were going to be without electricity, hot water and heating which was a godsend whilst three of us were working from home. Sam and his team were polite, courteous, professional and often went above and beyond the scope of the project. In summary, from the initial meeting with Andy on the Sales team through communication with Charlotte and Sian for co-ordination of the project and site survey by Lee, the whole experience with AOS has been a pleasure and we would have no hesitation in recommending them.
Customer in Cambridgeshire Posted on 06/04/2021 , work completed 27/03/2021
The trader replied (on 15/04/2021)
Hi Mr & Mrs Scott, Thank you very much for your review it is really appreciated. We are very glad to hear how happy you are with the service you received throughout the whole heat pump installation progress. Your installation was very large and required a lot of precise planning so we appreciate you noticed the effort made. It was a pleasure to work with you both throughout and we are extremely happy you are so pleased with everything. Kind Regards, The AOS Heating Team.
Best install of a new boiler system I could hope for!
Customer Service
Quality
Value
The AOS team arrived promptly each day and were very conscientious right from the start. All of their colleagues wore masks, put down sheets, and made sure to leave the house as clean and tidy as you could hope for. The works carried out were delivered to a high standard, and they even improved a number of additional items at our property at no extra cost (sorting out some creaking floorboards and a free washing machine install). Their rates are very competitive, and I am so happy we went with them over British Gas. Most importantly, they were friendly and approachable and I felt at ease with their team in our house.
Customer in Hertfordshire Posted on 31/03/2021 , work completed 12/02/2021
Very professional organisation
Customer Service
Quality
Value
AOS Energy Efficient Heating Systems Ltd recently installed an air source heat pump and replaced the hot water cylinder and most of the radiators in my home. Everything was completed according to the schedule. Staff in the sales and service departments were helpful and knowledgeable and communication was clear and easy. The installation team were pleasant, polite and obliging. They made an extra effort to meet the particular requirements of this job. There were a couple of issues with radiators but these were resolved satisfactorily. Everyone has been utterly professional and I'm very happy with the result. I would definitely recommend this company.
Sue in Buckinghamshire Posted on 16/03/2021 , work completed 12/03/2021
The trader replied (on 18/03/2021)
Hi Sue, Thank you very much for your kind works. It was a pleasure working with you on your renovation project. We hope you enjoying your new heating system. Kind Regards The AOS Team.
Service call
Customer Service
Quality
Value
My air source heating did not reach the require temp. booked a service. The previous service was only 6 months ago the office told me that I should have the mobile thermostat in the warmest room. Rubbish. cost of service £150 +vat...I was only asking the system to reach 20 degrees it never makes it. The engineer was helpful and obliging and suggested that the anti freeze/inhibitor be topped up. Phoned the office to pay extra for it. Shock horror they want to charge £250 + vat just to top up. This was on top of the service charge. I have insulated walls and attic with double glazing. How disappointed I am with the system. When it was installed the service was excellent and I had no complaints. Whilst this has been a cold winter to have a system that only reaches 14/15 degree is not good enough.
Customer in Essex Posted on 04/03/2021 , work completed 04/03/2021
The trader replied (on 15/03/2021)
When your heat pump was installed you were advised to upgrade radiators in your home but you chose not to proceed. It was made clear that we cannot guarantee room design temperatures if our recommendations are not followed. You were given 3 x free services which were carried out over the years, the 3rd service was completed 24/06/20 but we advised that the anti–freeze was low & should be topped up. We provided quoted but you chose not to proceed. On 25/02/21 you reported the system not reaching temperature & our service manager explained that you need to keep your thermostat in a room which is designed to react 21c if your thermostat is left in a room designed to 18c then the system won’t reach temp. You did not wish to take this advice & asked for a service instead. As all your FOC services had been used we explained that this visit would be chargeable. We suggested that you wish to take out a service cover plan as a service & labour are included. You decided not to & paid £150+VAT for a service upfront. When you booked you were told that if chemicals were required the charge would be £215+VAT. You were contacted the day before the service for payment & it was explained again that a top up would be £215+VAT. Once the service was completed it was confirmed that chemical was needed. You called to make payment but argued that you had previously been told £30. We explained there was a note on the system confirming that you were quoted £215+VAT but you put the phone down.
Central heating repair
Customer Service
Quality
Value
I needed AOS's help to repair a bent central heating pipe. Although the initial quote was high, they came and did the necessary work which turned out to be less than envisaged and so they reduced the fee without my asking. Tom (the engineer) turned up on time and worked without fuss. I was impressed by the fact that they didn't do anything unnecessary, for example the anti-freeze levels didn't in fact need topping up. Recommended.
Customer in Hertfordshire Posted on 10/02/2021 , work completed 05/02/2021
The trader replied (on 18/03/2021)
Hi David, Thank you for your review. AOS pride ourselves on being upfront and honest so we would always reduce our costs if not all the work was carried out. The same applies to the anti -freeze chemical, if a top up is not needed then we would never recommend for the sake of it. We are glad your experience was such a positive one. Kind Regards The AOS Team.
Professional throughout
Customer Service
Quality
Value
From start to finish a very professional service. Max and his team were polite, did a very good job and went the extra mile to do any of the little extras that might have needed doing - I was very impressed.
Customer in Cambridgeshire Posted on 06/02/2021 , work completed 03/02/2021
The trader replied (on 18/03/2021)
Thank you very much for your review. We will be sure to pass your comments of praise onto Max and his team. Kind Regards The AOS Team.
Air Source Heat Pump installation
Customer Service
Quality
Value
I was most impressed with the service provided by this company. The office staff were invariably helpful and knowledgeable and always responded promptly to my requests for information. The installation team were highly professional, efficient and friendly. They always kept us informed about what they were going to do and ensured that they left the house tidy and with access to hot water each evening. They also supplied electric fan heaters whilst the central heating was disconnected. When we experienced a couple of teething problems after the system was commissioned, these were rectifed on the same day that they were reported. I would highly recommend this company to anyone considering a similar installation.
Customer in Cambridgeshire Posted on 04/02/2021 , work completed 29/01/2021
The trader replied (on 18/03/2021)
Thank you for your positive feedback. We are so glad to hear that you were impressed with the high level of service AOS provided throughout your heat pump installation journey. It is of upmost importance to us that every customers experience is positive. please do let us know if we can be of any assistance in the future. Kind Regards The AOS Team.
Great service
Customer Service
Quality
Value
AOS answered the emergency call of my tenants, whose boiler had broken down and was beyond economical repair. They quoted competitively for a replacement boiler and installed within a couple of days - excellent service given that it was just a couple of (very cold) days before Christmas! Thank you, AOS
Customer in Hertfordshire Posted on 15/01/2021 , work completed 21/12/2020
The trader replied (on 18/03/2021)
Hi Theo, Thank you for your review. We are very glad that we managed to get your tenants up and running in time for the Christmas break. Kind Regards, The AOS Team.
Good installation but beware of expected efficiency benefits
Customer Service
Quality
Value
AOS installed an air heat pump system for us in June 2020. The work was carried out quickly and efficiently by professional installers and we were initially happy. However, when we subsequently had our property re-assessed for energy efficiency to claim the RHI rebate, we found that the energy efficiency had actually got worse on water heating than with our old oil boiler, with our EPC rating for water heating falling from average (with our old boiler) to poor (with the new air pump.) This risk was never explained to us when we signed up to have the work done. The EPC is a public document and can influence future buyers of your property. The “poor” rating for our new system’s water heating efficiency was most definitely not what we expected. Check carefully before you have one of these systems installed. The efficiency improvements you expect for your home may not happen in practice. They didn’t for us.
Customer in Buckinghamshire Posted on 21/12/2020 , work completed 24/06/2020
The trader replied (on 05/01/2021)
Due to a word limit our reply below has been reduced : Hi Mr Drew, As you are aware EPC's are carried out by independent assessors using the government tool & we have no control over the information documented within these EPC’s nor could we predict what efficiency will be calculated on a new EPC after an install. Although your EPC states that your hot water is rated has gone from ‘average’ to ‘poor’ your heating rating has improved from ‘average’ to ‘good’ along with the heating control improving from ‘good’ to ‘very good. The important thing to highlight is your system will actually be in ‘heating mode’ for an estimate of 75% of the time (13,207kWh) and the hot water only 25% (2,960kWh), these usage figures have been taken from your EPC. When you consider that your old oil boiler in heating was graded at ‘average’ & the new heat pump is now ‘good’ for heating this improvement to 75% of your overall energy demand completely outweighs the ‘poor’ grade for the 25% hot water usage. We have spoken to Elmhurst Energy the EPC accreditation for clarification and they have confirmed that when looking at air source heat pumps for hot water purposes, combined with a immersion boosts the system does not recognise the efficiency of modern heat pumps from previous inefficient models that required a immersion heater to top up the hot water which your system does not do. Due to the lack of update to the government data EPC’s are not a great reflection of the efficiency of a system.
Air Source Heat Pump Installation
Customer Service
Quality
Value
We have found the whole process with AOS of installation from survey, to quote, to installation to after sales to have been of an excellent standard. Every point of contact every time has done what they have said they would do without fail. Every point of contact has been knowledgeable, polite, efficient and has taken ownership of any issues and dealt with them efficiently. We feel the installation has been executed to an extremely high standard of workmanship and that we are in safe, reliable hands going forward. We have a warmer, "greener" house and are more than satisfied with our choice of supplier who has got us to where we are today.
Customer in Buckinghamshire Posted on 17/12/2020 , work completed 09/12/2020
The trader replied (on 05/01/2021)
t
Gas Boiler problem
Customer Service
Quality
Value
We contacted AOS, explained our problem - no hot water or heating - boiler just not working. The arranged a date for someone to look at the problem. Person turned up on time, we explained the problem. A thorough inspection was made and the result explained to us with the options available. We chose a replacement boiler and because I am 80 and disabled, got priority treatment in setting a date. On the day, two people turned up and the job duly completed. various ancillary probes found and explained with solutions suggested. The whole experience was excellent and we will almost certainly sign up for a maintenance contract.
Customer in Hertfordshire Posted on 19/11/2020 , work completed 19/11/2020
Great service
Customer Service
Quality
Value
AOS replaced our LPG boiler with an Air Source Heat Pump and we were very impressed with the service we received. The engineers were punctual, polite and worked hard. The office staff were extremely helpful with all the paperwork needed both before and after the installation. We would have no hesitation in using them again. Louise Hanzi
Customer in Cambridgeshire Posted on 19/11/2020 , work completed 06/11/2020
The trader replied (on 18/03/2021)
Hi Mrs Hanzi, Thanks so much for this review. Yourself & your husband were a pleasure to work for and we hope you enjoy your new heating system. Kind Regards The AOS Team.
My new boiler
Customer Service
Quality
Value
A O S Heating I found to be a totally efficient firm, professional, and up to speed with latest products and regs. Friendly, helpful, a joy to deal with
Customer in Hertfordshire Posted on 11/11/2020 , work completed 10/11/2020
Installation of Air Source Heat Pump System
Customer Service
Quality
Value
I have recently employed AOS to install an Air Source Heat Pump System in my house to replace the oil fired boiler. The installation team were excellent, turned up on time, completed on schedule and even cleaned up after themselves. When there was a small problem it was resolved quickly with no extra cost. The extra mile was also gone in terms of putting our airing cupboard back together after the new boiler was installed and doing a neat repair on the wall in the breakfast room. I would definitely recommend AOS.
Simon in Cambridgeshire Posted on 09/11/2020 , work completed 06/11/2020
New boiler fitted
Customer Service
Quality
Value
Have been with AOS for over 10 years, all servicing on my old boiler has been carried out regularly and extremely efficiently. Due to the age of my existing boiler I asked AOS to supply and fit new one. Engineer arrived promptly and installed the boiler, cleared up any mess and took great trouble to explain all the new equipment to me. Everything was completed within a very short time. I would thoroughly recommend this company and applaud their efficiency.
Customer in Greater London Posted on 07/11/2020 , work completed 07/11/2020
AOS ASHP installation
Customer Service
Quality
Value
AOS surveyed our property and installed an air source heat pump and iBoost. The work was carried out to the agreed schedule and budget. All employees communicated well with us and were very helpful. The installation team were thorough, industrious and considerate.
Customer in Milton Keynes Posted on 01/11/2020 , work completed 22/10/2020
Excellent work, great communication, polite and efficient staff
Customer Service
Quality
Value
All aspects of installing the heat pump were excellent: communications with the office staff were clear, informative and comprehensive; the installers were efficient and polite, and everything went to plan. Very pleased with the heating system.
Customer in Cambridgeshire Posted on 23/10/2020 , work completed 09/10/2020
Very pleased!
Customer Service
Quality
Value
We had a Heat Pump and new cylinder fitted. Staff were great, professional and efficient. We were pleased with the communication before, during and after. The job was completed a day earlier than expected and to the agreed budget. We would highly recommend.
Customer in Buckinghamshire Posted on 06/10/2020 , work completed 02/10/2020
Smooth, hassle free immersion installation
Customer Service
Quality
Value
Been with AOS since 2007, boiler servicing, advice and care always good - nearly always send the same guys so seem like a good company. Jack a regular for this and always polite and helpful. This time my immersion sprung a leak. Jack diagnosed the problem and within days this had been organised by the admin team, quoted for, sorted and repaired. Neat and immaculately tidy - even knowledgeably replaced the flooring under the boiler as part of the price so as not to delay work. Asked me to review and if happy at every step - couldn’t be better. Reece is a new member and will clearly be an asset. Both he and his colleague (sorry he did introduce himself but I can’t remember!) worked through lunch from early morning and stayed until late to get everything just perfect. Next day a minor problem was rectified by a future engineer who had liaised with the fitters and solved it promptly, asking if I was happy with all before getting me to check. All in all a really good experience. One minor issue - received an invoice, then 3 follow up calls to pay within 48 hours. When you have had one working day disrupted by work then kind of hassled this seemed a bit ‘off’. In the end I paid within 4 days but it was irritating. Although the bill was ok to be fair for the excellent job done. All in all thanks AOS - recommend!
Customer in Hertfordshire Posted on 30/09/2020 , work completed 25/09/2020
Great work installing air source heat pump
Customer Service
Quality
Value
AOS installed an air source heat pump and mains pressure hot water cylinder for us, which took 5 days. The installers worked very hard to get the complex system up and running as quickly as possible, but were meticulous and took the time to totally re-plumb the airing cupboard to make all the components fit neatly in there ! They were very today, put dustsheets down to protect the floor and swept up all their mess each day before they left. I have to say they provided the best experience I have ever had of plumbing work.
Customer in Cambridgeshire Posted on 29/09/2020 , work completed 26/09/2020
Very professional
Customer Service
Quality
Value
Job completed on time. Team were very professional. There were a couple of leaks which were sorted very quickly including one which we discovered on the Sunday following installation. Apart from that we were very pleased that we chose AOS for the installation of our heat pump system and would highly recommend them.
Customer in Cambridgeshire Posted on 28/09/2020 , work completed 20/09/2010
AOS Mitsubishi air source heat pump sale/installation review.
Customer Service
Quality
Value
Our friends recommended AOS, they were very happy with the installation, product & performance. The sales team took time to explain the operation, costs, options & installation process, they answered all of our questions. Installation took place 4 weeks after placing the order, installation took 3 days, 1 of these days was installing new radiators. The heating engineers were professional & hardworking. We are very pleased with the quality of the installation, the plumbing & electrical wiring is very neat. Any mess was cleaned up as they went. We cannot comment on the operation of the central heating as the weather has been mild. The air source heat pump heats the water from 3:00 to 6:00am, there is plenty of hot water for 2 and the temperature is fine. The air source heat pump is positioned outside our kitchen window you can just hear the fan with the window open, we don’t expect any issues with noise. There is no vibration when operating. We have no hesitation in recommending AOS, they are a professional operation marketing a superior product.
Customer in Hertfordshire Posted on 28/08/2020 , work completed 12/08/2020
Very poor service
Customer Service
Quality
Value
Failed to inform me that one one of my rental properties had a dangerous unvented cylinder. Failed to perform a single annual service/safety check in 6 years. Never sent me a single service report detailing what they had done. Very poor communication and on top of that very rude staff.
Customer in Hertfordshire Posted on 19/08/2020 , work completed 10/07/2020
The trader replied (on 27/08/2020)
Hi, Although a name has not been left on this review we are aware of the customer and the events that have led to this review. We are surprised & a little upset by these comments as from previous correspondence we felt that matters had been left on a positive note. Furthermore, to clarify this particular call out was carried out in April during COVID-19 lockdown and at a time when we as a Company were endeavouring to provide the best service to our customers despite adhering to the Government guidelines for attending peoples’ properties. We fully accept that after our initial call out to the rented property we failed to provide you with a quotation for the replacement of the hot water cylinder but we apologised for this error a number of times & again would like to take this opportunity to apologise. This being said your comments that the cylinder was unsafe are not correct, the cylinder failed due to a build-up of scale and the cylinder was not left in a dangerous condition. In addition to this all requests by yourself for annual servicing / call outs were always carried out however ultimately the responsibility to ensure all servicing checks are completed is solely yours as the Professional Landlord. If you would like to discuss this matter further please feel free to contact myself at charlotte.owen@aosheating.co.uk and we hopefully come to a resolution. Kind Regards Charlotte.
Annual service review
Customer Service
Quality
Value
The engineer arrived on time. He was efficient, effective and very personable. The work was carried out quickly and efficiently with minimal interaction. Social distancing was observed throughout. He noted and reported a minor issue and I have been advised by the controller that this will be resolved next time they have an engineer in the area. I have been pleased with the system since it was installed and can not fault their service.
Customer in Central Bedfordshire Posted on 11/08/2020 , work completed 10/08/2020
Professional job
Customer Service
Quality
Value
The communication with AOS, the expertise of the engineer and the work of the two installers was excellent. From start to finish, I was so impressed with the service and dedication.
Customer in Hertfordshire Posted on 08/08/2020 , work completed 06/08/2020
Installation of new boiler
Customer Service
Quality
Value
EOS installed my new Worcester central heating boiler. They arrived on time for the job and made sure protection for our carpets was in place before they started work. The job was completed within the time frame they said and left our clean and tidy. The installer from EOS seemed to really know his business and I was very impressed with his knowledge. I have used EOS for my boiler servicing and central heating maintenance for several years and have always been pleased with their work. I received several estimates for my boiler replacement but overall EOS worked out the cheapest, and hopefully the best.
Customer in Greater London Posted on 29/07/2020 , work completed 23/07/2020
Work delivered as promised, on time, excellent quality.
Customer Service
Quality
Value
Installation of an air-source heat pump, and all the equipment to create a new system for delivering central heating via existing radiators and hot water via existing tank. Delivered on time and no new costs incurred. three days work that was inevitably a huge intrusion, done with courtesy and consideration, and leaving the house clean and tidy. The initial marketing via a public presentation was highly professional. The survey and negotiation of contract was thorough and enabled us to take this seemingly large step with confidence, but I would say that the large amount of documentation (some 100 pages in all) delivered by email attachment was difficult to study and handle, as it seemed designed for study on paper instead of on the screen. ie it was on A4 portrait pages, not the layout of a computer screen. Help in applying for the Domestic Renewable Heat Incentive (RHI) was excellent. As it is July, we will not be able to evaluate the performance of the heating system for 3-4 months.
Customer Posted on 25/07/2020 , work completed 22/07/2020
Very professional installation
Customer Service
Quality
Value
AOS have been extremely professional throughout this conversion from gas central heating to air source heat pump. We were visited by a very helpful and knowledgeable site surveyor, then went through five iterations of the proposal until it exactly met our requirements. We were delayed due to separate work on our solar panels but AOS were extremely patient, then when we were all ready to go Covid hit and everything went on hold. AOS scheduled us in as soon as possible after lockdown lifted and last week did a very professional, neat, and tidy Job, as much as you can be when you’re changing all radiators, lifting floors, drilling through walls and chasing into plaster. They cleaned up after themselves every night and took away all rubbish and old equipment. The staff on site were experienced, polite and careful of our home and belongings. We’ve already recommended them to one set of friends who want to make the same changes that we have.
Tony Posted on 21/07/2020 , work completed 17/07/2020
Excellent job done by the whole team
Customer Service
Quality
Value
We are now the proud possessors of an air source heat pump, new hot water cylinder and seven new radiators! The installation process has been efficient, pain free and extremely well organised. In addition, the removal of our old equipment, including the oil tank, was done quickly and very competently. Our installation team of Sam, Ricky, Rhys, plus some bonus help from Ben, Max and Lee, has been excellent, all very reliable, polite and friendly, and obviously very competent. Also, our dealings with the office have been hassle free and the responses to our e-mails have been quick and informative. The nice thing has been the coordination of the whole process which has run smoothly from start to finish. The teams have arrived each day ready for an 8 o’ clock start and all deliveries came on time, so the logistics were also very well managed. We would like to thank everyone who has been involved in our job. We have been very happy with all aspects and are happy to recommend AOS to anyone who is thinking of having an air source heat pump. We will also be taking out a maintenance and servicing plan! Paul and Brenda Avery
Customer in Cambridgeshire Posted on 09/07/2020 , work completed 09/07/2020
Excellent Service
Customer Service
Quality
Value
Having used AOS before in a previous property we had no hesitation using them again to update and relocate our very old boiler system and rusted radiators to a combi unit with new radiators throughout. The lads (Ryan, Reece & Max) were polite & friendly, extremely hard working, they took great care to clean up and leave everything tidy for us each night and even finished the job ahead of schedule. Thank you AOS we are now confident we have a modern, energy efficient heating & hot water system that won’t let us down.
Customer in Hertfordshire Posted on 11/06/2020 , work completed 11/06/2020
Very efficient and professional service throughout
Customer Service
Quality
Value
I have always been keen to help the environment, have a solar water system as well as solar PV panels and was intrigued by a friends Air Source Heat installation. But I always thought my house wasn't suitable as it wasn't a new build (1963) or very well insulated. Then I saw a meeting planned for a presentation by AOS locally and went along to find out more. I was convinced there and then that it was something I wanted to do... I just needed to roll it in to a larger house renovation project, so started the process of planning and estimating. We had an old oil fired boiler that was in need of replacing some time in the near future and having done all the sums, this was almost a no brainer. With the current RHI scheme, we anticipate we should almost get the entire installation cost back over a seven year period. Today as I write, we have experienced our first day after the system was installed and we are very impressed. Not only with the system but the install as well. The installers were young but knowledgeable and very helpful, they were so neat and tidy clearing everything up after themselves. We couldn't recommend them highly enough.
Customer in Buckinghamshire Posted on 11/06/2020 , work completed 29/11/2018
AOS EEH Ltd installed air source heat pump on 29May2020
Customer Service
Quality
Value
The installation went very smoothly, friendly and efficient installers, generally very good service all round. We are very pleased.
Customer in Cambridgeshire Posted on 02/06/2020 , work completed 29/05/2020
Very satisfactory work
Customer Service
Quality
Value
The workmen arrived at the stated time, took care to protect the floors etc, and worked hard and well throughout the four days of the installation. As an example of their thoughtfulness, when some dirty water came out of one of the radiators they had to remove, causing a mess on the carpet, they were concerned to clean this up before leaving that day.
Customer in Central Bedfordshire Posted on 21/05/2020 , work completed 14/05/2020
Superb from start to finish
Customer Service
Quality
Value
AOS recently replaced my oil-fired boiler with a Mitsubishi Ecodan air source heat pump. They also replaced the hot water cylinder and fitted new radiators throughout the house. Everyone we dealt with at AOS has been so helpful, from Andy and Neil in Sales, Lee for the initial survey and the post installation checks, Charlotte in the office and of course the excellent installation team, who completed the installation remarkably efficiently and to a very high standard. The heat pump itself has been very effective; a nice warm house and unbelievably low running costs. Plus, of course, the RHI grant that will cover much of our installation costs.
Customer in Buckinghamshire Posted on 18/04/2020 , work completed 28/02/2020
Great work by AOS
Customer Service
Quality
Value
Our oil had run out one week before they were due to install the heat pump so we were worried with covid19 restrictions being enforced that we might have our installation deferred.. 2 AOS men Ryan and Max turned up on schedule and worked methodically for 3 days and left us with a working central heating and hot water system. Pipe work and electrics very neat, they cleared up at the end of each day and took all the rubbish away on the last day. We have not had to call them back with any problems so all good. The company are easy to work with and happy to help the customer with any problems we might have. Thank you AOS.
Customer in Cambridgeshire Posted on 06/04/2020 , work completed 25/03/2020
Great company and great work
Customer Service
Quality
Value
Had a great service from the start, knowledgeable, quick to reply. Installation was outstanding and efficient. We really recommend them.
Customer in Buckinghamshire Posted on 31/03/2020 , work completed 13/12/2019
Fitted Worcester Greenstar 15i system boiler
Customer Service
Quality
Value
Old boiler gave up after 14 years and AOS installed new within 48 hours. Workmen were really tidy and knowledgable. Been with AOS two years and always professional in all aspects of dealing with them
Customer in Hertfordshire Posted on 24/02/2020 , work completed 24/02/2020
Air Heat Pump installation
Customer Service
Quality
Value
5 day programmed job was completed in 4 days. Very tidy team clearing away tools and cleaning up each night. Machine appears to be doing what it says on the tin. Technically the machine seems capable of more wizz bang options than we will ever need. There is a very straight forward video explaining programming which even I understood. Back up and advice from the office was excellent.
Customer in Buckinghamshire Posted on 10/02/2020 , work completed 06/02/2020
Installation of heat pump
Customer Service
Quality
Value
AOS installed a heat pump, a new hot-water cylinder and replaced eight radiators after completing a survey to decide which radiators needed replacing and what size pump was needed. The work was done on time and to budget and appears to be of a very high standard. Our previous heating system was temperamental to put it mildly, and now we are very happy: the house is warmer and the water is piping hot.
Customer in Hertfordshire Posted on 04/02/2020 , work completed 30/01/2020
Satisfied customers
Customer Service
Quality
Value
AOS have provided an excellent service--from the sales process, to quotation, to timing and installation. We have only had the heat pump for a few days but are very happy with the product too.
Customer in Cambridgeshire Posted on 20/01/2020 , work completed 16/01/2020
Installation of new heat pump system
Customer Service
Quality
Value
From initial contact to completion, AOS were superb! Our existing heating system failed and we needed immediate help. Sales support was good with the explanation of exactly how the system worked and explaining how to gain government financial support made our decision easier to make. The two people who came to install the system were amazing. They were very tidy and conscientious of the disruption as we had no heating over a 4 day period in January. In addition, because we had a failed system, we were pushed up the list and were the first installation of the New Year. Everything was explained and expectations were met. The office administration was good and were challenge at a difficult time over Christmas and New Year. We could not have asked for better service due to the circumstances. We are happy with every aspect of the service from AOS and would highly recommend installing this system which in the longer term will save money.
Customer in Buckinghamshire Posted on 19/01/2020 , work completed 29/10/2019
Great work, friendly people and a smooth process throughout
Customer Service
Quality
Value
I had a heat pump and new tank installed by AOS, as well as connecting to existing underfloor heating. They sent me an exact quote ahead of time, and completed the works exactly as planned. I found the process throughout was very good: the initial visit, keeping in touch with the office during the planning, and the final installation. I found that the whole team from the office to the installers and people at our house were very friendly, and they handled a few unexpected changes excellently. I would highly recommend them, both for the fair pricing, and the peace-of-mind knowing that they were very easy to get in touch with and keep me updated on the progress.
Customer in Cambridgeshire Posted on 19/12/2019 , work completed 12/12/2019
Polite, professional and competent.
Customer Service
Quality
Value
The two young men who removed the old boiler and then installed the new one, were both polite and professional.when they first arrived they put down dust sheets and were very careful to keep mess to a minimum. they installed the boiler, gave us a rundown on the work that had been done gave advice on operation and answered our questions clearly. Very happy with the work done. have been with AOS for years and can thoroughly recommend them.
Customer in Hertfordshire Posted on 04/12/2019 , work completed 04/11/2019
Excellent workmanship.
Customer Service
Quality
Value
Prompt, efficient and helpful installation. Workmanship and courtesy could not be faulted. Installers always had time to explain what they were doing and how things worked. Cleaned up and you would never know they had been. Committed to doing a first class job and equally committed to AOS - very refreshing attitude.
Ivor, Hertfordshire Posted on 03/12/2019 , work completed 03/12/2019
Excellent installation
Customer Service
Quality
Value
I don't normally write reviews but I must say AOS sent 2 engineer s to fit a new boiler system in my home, it took only 1 and 1/2 days the boys were very polite the workmanship was excellent and took time to explain things, they tidied up. Really, really happy.
Customer in Essex Posted on 26/11/2019 , work completed 22/11/2019
First class service
Customer Service
Quality
Value
My boiler broke down and we had no heating. I was experiencing difficulties with another service provider whom I am in contract with for emergencies. I contacted AOS and spoke to Kerri, who had an engineer out within a hour. The fault was diagnosed and repaired by a professional engineer, all in the same day. I cannot express my gratitude to this company for their efficient, professional and speedy service. The price we paid was half of what I was quoted elsewhere. Will most definitely use this company from now on. Thank you so much to Kerri for arranging this and keeping in contact with what was going on and to Tony for doing a speedy/professional repair. Thank you.
Customer in Hertfordshire Posted on 21/11/2019 , work completed 20/11/2019
Top company
Customer Service
Quality
Value
I called AOS to service my old boiler Several parts needed replacing which the engineer explained to me he could do and the costings however due to the age of the boiler and its condition I was probably going to need a complete new boiler replacement soon. The engineer answered any questions i had and left me with a decision to make I phoned him the following day and decided to go ahead with a new purchase Throughout the whole process the engineer was extremely helpful explaining choices and the costings of the work to be carried out I am very pleased with the work that was carried out he also corrected some old pipework that I no longer needed. The work was followed up with a good aftercare service.
Customer in Essex Posted on 19/11/2019 , work completed 12/11/2019
Air source heating installation
Customer Service
Quality
Value
The installation engineers arrived promptly each morning, were polite, tidy and completed the job in the specified timescale. They made a considerable effort to minimise the amount of visible pipework and position the unit as inconspicuously as possible. I would thoroughly recommend this company to anyone thinking of having air source heating installed.
Customer in Cambridgeshire Posted on 19/11/2019 , work completed 15/11/2019
Prompt and professional.
Customer Service
Quality
Value
Very hard workers, unobtrusive and taking far less time than expected. Explained very clearly about the workings of the new boiler and checked relayed items, e.g. stopcocksand gas hob. I couldn't wish for more!
Elaine, Hertfordshire Posted on 08/11/2019 , work completed 08/11/2019
Excellent work!
Customer Service
Quality
Value
Sam and his apprentices removed our old boiler and relocated a lovely new one. All the pipework and making good is excellent. Everything about how it works explained very clearly. We recommend AOS office team also great communication.
Saum, Hertfordshire Posted on 08/11/2019 , work completed 08/11/2019
Just plain good service
Customer Service
Quality
Value
Have used Anthony Owen since he was a one-man operation many years ago - he was the only engineer in our area authorised to deal with the sealed heating system in our new build house. We've since moved. This was just a service and put in a new valve that was jammed in a towel rail. Matt our engineer removed his shoes as he entered the house and did the boiler service. When checking the ventilation (ours is an old 1985 boiler) he pointed out the interior vent had a fly screen behind it which I wasn't aware of and this could get blocked with dirt. He unscrewed the cover and carefully cut out the fly screen with a Stanley knife. I was impressed - I'd rather have flies than carbon monoxide. Up to the bathroom and Matt managed to unjam the errant valve so no need for a new one. A very knowledgeable, pleasant and polite engineer. The following day I had a voice mail from Kerri in the office demanding (in the politest possible way) my bank details in order she could refund me the cost of the valve and labour I'd paid in advance. I can't imagine how you can get better service than that?
Tom in Hertfordshire Posted on 06/11/2019 , work completed 03/11/2019
Superb service
Customer Service
Quality
Value
I have just had an issue with our air source heat pump resolved. As always, AOS have been superb to work with. I like the manner in which it approaches issues and the way this approach is followed up by staff. They are all highly competent and very professional. Communications are excellent and as a result I always know what is going on or proposed at each stage of the process. I can highly recommend AOS.
Customer in Hertfordshire Posted on 01/11/2019 , work completed 01/11/2019
Excellent services from first reporting boiler problems to completion of work.
Customer Service
Quality
Value
I left telephone message my boiler dead. Next morning AOS rang took all details, hour later engineer arrived confirming replacement needed due to boiler age. Office staff were extremely supportive due to me having health problems managed for replacement to be done within week. Tony the engineer arrived 8am,he explained all he would have to do and kept me informed of things. He was great, tidy, through clean worker and very pleasant, I felt comfortable with him in my home. When he left in evening I had hot water and heat. He returned following morning for approximately 1-2hours,with an apprentice for final checking, clearing, paperwork. He explained thoroughly things to young lad, I was very impressed and would have no hesitation in recommending.
Valerie, Hoddesdon Posted on 16/10/2019 , work completed 09/10/2019
Completely happy customer
Customer Service
Quality
Value
I had a new replacement boiler fitted to replace one that was only 6 years old and oh how I wish I had gone to AOS in the first place. Tony was brilliant, efficient, polite, informative, clearly knew what he was doing and sensitive, which I really appreciated. I will definitely be recommending AOS to everyone I know in the future. Their review page should be 5 stars for every category.
Pauline, Hertfordshire Posted on 08/10/2019 , work completed 08/10/2019
Air source installed
Customer Service
Quality
Value
We were very keen to reduce our contribution to climate change and so wanted to move off our oil boiler. AOS have installed air source heat pumps in a number of our neighbouring properties and came highly recommended. They made the whole process very easy and installed new radiators with minimal mess. The new heat pump is incredibly quiet (quieter than the old boiler system!) and our house is already up to temperature and feeling nice and warm. All paperwork also completed very promptly.
Customer in Cambridgeshire Posted on 07/10/2019 , work completed 03/10/2019
Excellent, fast and well planned Installation
Customer Service
Quality
Value
Absolutely delighted with the installation of our heat pump, works like magic! Thanks to everyone in the team, from the first surveys to the finished article a very professional and confidence building experience. I had a bit of a wobble when the oil line was cut off, hoping that a large bungalow on a very windy hill would be warm enough with this new arrangement. I remarked, when it was first turned on, "Oh, this radiator's hot!" Greater surprises came at bedtime when I sank into an up- to- the- neck hot bath, wonderful! The work of art now gracing the wall in our garage is fantastic, Ryan should be exhibiting in the Tate Modern. Everyone was easy to work with and kept us informed at all times. We couldn't be more pleased., Thank you to all at AOS.
Kathy and Geoff Posted on 07/10/2019 , work completed 05/10/2019
Excellent work
Customer Service
Quality
Value
AOS installed our heat pump, new water cylinder, many new radiators and controls in just 4 days. Everyone we met was very nice and it was easy to have them working in the house.
Customer in Essex Posted on 01/10/2019 , work completed 27/09/2019
Excellent Teamwork and Faultles Organisation
Customer Service
Quality
Value
Stripping out an oil heating system and installing an Air Source system is a technically complex and physically difficult job. Amazingly, the AOS team achieved this, on a difficult site, in two days, creating a minimum of disruption and inconvenience to us. The administrative support was ever polite, helpful and responsive, keeping us well informed with clear explanations and paper work. AOS is an efficient company that works seamlessly as a team from placing an order to delivery. They removed completely the hassle usually involved with complex work of this sort, leaving a neat and tidy job without a single snag.
Frank in Cambridgeshire Posted on 01/10/2019 , work completed 25/09/2019
Excellent; already recommended!
Customer Service
Quality
Value
Superb advice and survey prior to fitting source heat pump. Visited second time to answer our questions. Really good office support. Excellent fitters, on time, efficient, pleasant and did a great job. The system works perfectly! Business definitely qualifies as 'Trusted Trader'.
Michael, Cambridgeshire Posted on 19/09/2019 , work completed 19/09/2019
Efficient, diligent
Customer Service
Quality
Value
An efficient team of workmen - each knew his job and they worked well together. They acted professionally at all times. The house was left tidy after each days work. They arrived promptly daily. The company ahs been thorough, all members have been approachable and willing.
Heather, Bedfordshire Posted on 29/08/2019 , work completed 29/08/2019
Professional and fast installation of air source heat pump
Customer Service
Quality
Value
We had our oil boiler replaced with a heat pump. Installation was completed ahead of schedule with very professional staff. The welded piping is a work of art (thank you Ryan). We had a few worries: would we get enough hot water, would the radiators get hot enough, could we change the temperature the house was heated to, could we make the inside pump less noisy? The answer to all was yes. The review after a month was very helpful. The one time we needed to reset we followed the instructions fine but called the help line for reassurance anyway and were able to talk to someone straight away. Unexpected perks included: water tanks in loft removed and full mains pressure in all taps, so don't need a separate pump for the shower. It felt like a bit of a risk but we are glad we did it.
Customer in Bassingbourn Posted on 25/08/2019 , work completed 04/07/2019
Excellent service
Customer Service
Quality
Value
We were looking for an environmentally friendly alternative to our oil fired boiler and having investigated the alternatives, decided to proceed with the installation of an Air Source Heat Pump following a talk in our Town Hall arranged by AOS Heating and an initial home visit. We had to apply for planning permission as our house is Grade 2 Listed but found the Local Authority fairly enthusiastic about renewable energy, although the process took a while! We found everyone at AOS to be professional, efficient and friendly from the initial proposal right through to the installation, and we were grateful for all the help they gave us and their patience with our many questions! We would definitely recommend the company.
Lawrence Posted on 23/08/2019 , work completed 22/08/2019
Very professional and polite
Customer Service
Quality
Value
We have just had an Air Source Heat Pump installed by AOS. We were sceptical about having this done as we have a very old house but AOS gave us a number of reference sites which we were able to visit and these allayed our concerns. The installation was complex, because of the age and size, but was very professionally carried out by Sam, Max and Max (thanks guys). Lee has subsequently followed up to sort a minor teething issue. Its rare to come across a company that works to such a high standard and is unfailingly polite. I wouldn't hesitate to recommend them.
Customer in Hertfordshire Posted on 22/08/2019 , work completed 16/08/2019
Another great job
Customer Service
Quality
Value
We have been a customer of AOS for almost 10 years now. They recently fitted a new combi boiler for us. The team were thorough and professional, from the initial survey and quote, through to the installation team. The quote was competitive, and the installation was completed efficiently and on-time. Would highly recommend.
Paul, Hertfordshire Posted on 05/08/2019 , work completed 18/07/2019
Brilliant work done.
Customer Service
Quality
Value
Highly recommend AOS. Always use them. Brilliant.
Giuseppe, Essex Posted on 02/08/2019 , work completed 02/08/2019
New gas system boiler installation
Customer Service
Quality
Value
We have used AOS for many years now, and have always received great service whenever we had a problem. Our old boiler was becoming unreliable, and I had no hesitation in asking AOS to replace it with a new model. The installation team were very friendly and professional, and went the extra mile to reduce the inevitable disruption to a minimum while the installation took place. Extremely happy with the end result.
Customer in Hertfordshire Posted on 01/08/2019 , work completed 29/07/2019
New boiler
Customer Service
Quality
Value
We have used AOS for a over 20 years to install and service boilers in various houses we have moved to. The work they have just completed was the replacement of a boiler which was over 15 years 15 years old and whilst they had serviced it for the last 3 years since we moved in, it was now beyond repair as no spare parts were available. The boiler manufacturer had ceased to exist. The price quoted was much the same as quotes I had online, but as we had used them for years and still had ongoing maintenance contracts on other houses, we decided to stick with a company we knew and could trust. The boiler was replaced in a day, and whilst they had to come back a few days later to replace the old programmer, which was playing up, it was all completed efficiently. We will continue to use AOS and I would recommend them
Paul, Hertfordshire Posted on 01/08/2019 , work completed 31/07/2019
Air Source Heat Pump, from idea to working system. Thank you AOS
Customer Service
Quality
Value
I attended a talk about air source heating at a village hall nearby one Saturday morning, out of a growing curiosity about replacing my ancient oil boiler with a more environmentally alternative. Heaps of information given, so made an appointment for a home visit - and I think I already knew that I was going to go down this route. From the home visit by Andy, through visit to Mitsubishi premises to check the noise level (which really just sounds like a light breeze), then surveys by Lee, and co-ordination in the office from Charlotte, all the preparations were clear, helpful and precise. The fitting team, Sam, Sam, Max and Matt were excellent. They took away all the old oil boiler system, and old hot water tank, and replaced with Air Source Heat Pump, new hot water tank, and new radiators. Huge admiration for their professionalism and attention to detail. Pleased to be asked opinions about various items, such as precise siting of controls, etc. Very happy indeed with the whole process, which took 5 days - but much of the last day was taken up with tutorial from Sam about how to work everything, and what to do if I can't ! It's high Summer right now, so only the hot water is on. I'm sure I will be delighted with the heating once it is cold enough to switch it on. And if there are any problems I am completely confident that AOS will give me all the support I need. Sian in the office has already supported me through the RHI process. A great team.
Customer in Essex Posted on 18/07/2019 , work completed 12/07/2019
Professional Service Throughout
Customer Service
Quality
Value
From the moment we decided upon a heat pump system AOS excelled themselves. All the engineers that participated in its planning and installation acted in a caring and professional manner. We had a small leak, die to the pressure change and had an additional radiator changed. This was carried out promptly and was resolved to our full satisfaction.
Customer in Central Bedfordshire Posted on 21/06/2019 , work completed 17/04/2019
Highly Recommended
Customer Service
Quality
Value
I have been a customer of AOS for around 20 years and have had a consistently high level of service from them over that time. I have developed a very high level of trust in AOS covering every aspect of their business from the engineers, to the work carried out and the administration/support staff. I cannot recommend them highly enough.
Customer in Essex Posted on 12/05/2019 , work completed 03/05/2019
Very professional and efficient
Customer Service
Quality
Value
AOS were helpful and informative throughout the whole process of deciding to replace our oil-fired boiler with an air sourced heat pump. They were patient and understanding when we dithered over this large purchase. they answered all our questions and even arranged for us to visit a previous customer (many thanks to them too) to get their feedback on the system and the company. The engineers were punctual, professional and polite at all times. We had been promised that the pump, hot water tank and radiators would be installed over 4 days rather than 5, as the Friday was a bank holiday. In fact, they finished in the early afternoon of the 4th day and they ensured that disruptions to our electricity and hot water were kept to minutes and a few hours respectively. We are also impressed that they will conduct a 'health visit' one month after installation to ensure that all is running smoothly.
Customer in Cambridgeshire Posted on 02/05/2019 , work completed 18/04/2019
Prompt and professional
Customer Service
Quality
Value
Failed boiler replaced in 2 days. Minimal disruption. Everything cleaned before completion of the work.
Burt, London Posted on 10/04/2019 , work completed 10/04/2019
Installation of new Worcester Boiler
Customer Service
Quality
Value
We have been with AOL for many years and have always found Sian and the rest of the the office staff to be efficient and pleasant. When we needed an engineer to repair our old boiler the engineers have been on time and able to correct the fault quickly. When it was decided to have a new boiler Charlotte emailed a quotation the same day we requested a quote. The install team were on time, tidy, polite and did a good job. Andrew Hoddesdon, Herts
Customer in Hertfordshire Posted on 04/04/2019 , work completed 22/03/2019
Air Heat Pump Heaven
Customer Service
Quality
Value
Buying any new and expensive new technology can be scary, but AOS clearly understand air source heat pumps inside out. We took about 3 months to arrive at our buy decision and throughout this period AOS answered all our questions patiently and fully. We raised all sorts of questions and AOS organised a visit to the manufacturer which was very helpful. Independently, we visited also our Council and talked to other users. All the AOS personnel have been great. The installation team deserve special mention. They were unfailing polite, clean and considerate of our needs. The installation had been planned well, with everything happened efficiently. We are only a week in post installation, but we are very happy. Credit too to Ofgem RHI, which processed our RHI application within 48 hours.
Customer in Cambridgeshire Posted on 20/03/2019 , work completed 08/03/2019
Very efficient, neat installation of 2 air source heat pumps for listed building
Customer Service
Quality
Value
From the first time we contacted the company, their communication has been exemplary. They explained everything and were quick and flexible when we wanted to add items and make changes. We believe the price we paid was very fair, and they helped us to apply successfully and promptly for the domestic RHI. The on-site team were polite, friendly and accommodating. They worked fast, but were neat, considerate and careful, respecting the fabric and contents of our 400-year-old Grade 2* listed farmhouse. The system is working exactly as they said it would, and we are delighted.
Customer in Buckinghamshire Posted on 14/03/2019 , work completed 01/03/2019
AOS are a very honest, knowledgeable and hardworking company.
Customer Service
Quality
Value
I can only speak highly of AOS. Each member of staff took responsibility for my installation. They were able to bring my install date forward by two weeks with no issues at all. The work itself has been done to a very high standard, in a very efficient and tidy fashion. All staff are knowledgeable and willing to resolve queries or answer questions. Happy to recommend.
Customer in Buckinghamshire Posted on 06/03/2019 , work completed 01/03/2019
Professional - courteous - efficient - tidy....what more is there to say!
Customer Service
Quality
Value
From the outset, our experience with AOS has been most positive. 'Air Source Heat Pump' was not a subject we knew much about, but the down to earth explanations soon had us enthusiastic to explore further. Living in an ancient (17th century) cottage with a not quite so ancient oil fired boiler in need of replacement we were in the perfect position to consider this more modern solution. The proposed system stacked up well against the competition. Next step was a detailed survey to confirm that the notional solution fully met the requirements. In our case, replacement radiators were recommended - so some additional expense - but we considered this to be sensible and the deal was done. We then had some additional approvals to work through as we live in a Conservation Area, so we had to delay the AOS-offered installation date by a couple of weeks. The installation team, arrived promptly on the appointed day. They were extremely professional, pleasant and hard working. They worked steadily through the project and were diligent in tidying up each day. Obviously a very disruptive few days for us but we have nothing but praise for their dedication to the job and their tidiness at the end of each day. And the result: a consistently warm house with none of the previous cold corners. The system just gently works away keeping the warmth just right. It has really made a big difference to this home!
Customer in Buckinghamshire Posted on 01/03/2019 , work completed 21/02/2019
AOS air source heat pump installation
Customer Service
Quality
Value
AOS quoted for installation of an air source heat pump and right from the start they were the quickest to respond, the most professional and helpful. Once the product was agreed, AOS installation team were extremely professional and courteous. The installation was neat and tidy. When I had a query, AOS visited the next day to ensure all was OK. The system works well and is a joy to use.
Customer in Hertfordshire Posted on 20/02/2019 , work completed 15/02/2019
New Air Source Heat Pump by AOS
Customer Service
Quality
Value
I did a bit of research for a local company and had a number of quotes for an Air Source Heat pump to replace our ageing oil boiler. I was impressed with the presentation that Andy from AOS gave. His explanation of the system was aimed at the lay person. After deciding to use them we were introduced to the office staff, Abbie, Charlotte and Sian, who are courteous and knowledgeable and quick with the relevant information. The site visit performed by Lee was done once again with professionalism and informative. The installation was done on the date agreed and completed on time. we were pleasantly surprised that we were left with hot water for the four days the install took. The install team, Tom, Ryan and Harvey were polite, courteous, tidy and professional. I was impressed with the workmanship. The only teething problem was sorted quickly and was a part supply issue not an AOS issue. An after install visit was performed a week after the system was installed by Jack who answered the few questions we had and did a final check of the system and all appears to be running well and a nice warm home. January was probably not the best time to replace your heating system. I would recommend AOS Energy Efficient Heating Systems Limited wholeheartedly.
Customer in Cambridgeshire Posted on 24/01/2019 , work completed 10/01/2019
Extremely professional.
Customer Service
Quality
Value
AOS Energy carried out their work very efficiently. Excellent timekeeping. Clean and tidy. Very polite staff. I have recommend them to my neighbour who has contacted them for a survey as I was so happy with all aspects of their work.
Linda, Hertfordshire Posted on 14/01/2019 , work completed 14/01/2019
HIGHLY RECOMMENDED
Customer Service
Quality
Value
We would not hesitate to recommend this Company. They were professional, competent and friendly from the initial survey to the completed job. They worked hard to finish the installation of an urgently needed new boiler just before Christmas. We were impressed by the efficient way they made good on any repairs that resulted from this work and we will be taking out their Service Cover and continue to use them.
Customer in Hertfordshire Posted on 11/01/2019 , work completed 22/12/2018
Outstanding service & installation of Air Source Pump
Customer Service
Quality
Value
Following a presentation by AOS, much research & early discussions, we had a survey & energy report. Then made the decision to commit to changing from oil to an air source pump. We have been very impressed at every stage of the process. The ‘no pressure ‘ sales, the efficiency and courtesy of the team, who made sure we were happy at each stage. We were particularly impressed with the way they worked with a potential apprentice, carefully explaining techniques/checking his work. The handover explanation was clearly done, with all questions answered. One week in and we are thrilled with our new heating system. Many thanks to all concerned.
Bury Posted on 26/11/2018 , work completed 26/11/2018
Air Pump and Central Heating Installation.
Customer Service
Quality
Value
Not having any mains gas in our village we decided it was time to replace our existing expensive storage radiators. Having attended an AOS presentation on Air Pumps we decided to get a survey and quote for a full system. We are totally satisfied with the outcome. The installation team were punctual, professional, personable and efficient. They always tidied up before leaving at the end of the day, we were never left without hot water and they complemented my wife on her home made "Short Bread". I recommend AOS for reliable and efficient service.
Customer in Buckinghamshire Posted on 20/11/2018 , work completed 26/10/2018
very pleased with our new air source heat pump
Customer Service
Quality
Value
We have just replaced our LPG heating system with an air source heat pump, installed by AOS. We were very pleased with the way the work was carried out and appreciated the courtesy of everyone we dealt with. We were grateful for the lack of 'pressure' before we went ahead, and feel supported post-installation.
catherine henderson Posted on 07/11/2018 , work completed 07/11/2018
Top quality work and communication
Customer Service
Quality
Value
AOS provided my parent's Worcester Bosch boiler around 16 years ago and, with Winter 2018 approaching I considered it time to assess and replace if necessary. I asked AOS to provide a quote when servicing the existing boiler which they promptly did. The quote (for London) was extremely reasonable, and I recommended to my mother to proceed, despite always obtaining several quotes normally. The removal was more difficult due to the boiler being located in the loft, but AOS undertook the task on and within the time quoted, with no fuss or mess. New boiler works perfectly. My mother (now on her own), asked them back to explain operation again, which AOS happily did. As I live over 225 miles away any such undertaking is a concern, but the people from AOS provided a top class, professional service from start to finish, giving me considerable comfort throughout, great stuff.
Terry Deamer Posted on 29/10/2018 , work completed 29/10/2018
Really first-rate service throughout.
Customer Service
Quality
Value
We had AOS replace our existing oil-fired boiler central heating system with a new Ecodan air source heat pump as we wanted something more reliable and less costly to run. We had done a considerable amount of research into alternative heating systems and air source heat pumps were the best option for us. AOS were our choice of installer as we were impressed by the open and honest information we were given by them from the start as well as the lack of pressure selling which was refreshing. It took us some time to take the final decision and they were fine with that. The job was carried out with efficiency and courtesy and we felt that the installation team were taking care of our house during the work. There was a small accident where an item of furniture got knocked but AOS were very quick to apologise and rectify the situation. I would recommend them to anyone for similar work.
MTemplar Posted on 08/10/2018 , work completed 08/10/2018
Outstanding service and support - highly recommended
Customer Service
Quality
Value
AOS is an outstanding company. We have been delighted not just with the ASHP installation itself but also the full support we have received both before and after the installation. Our project was particularly problematic because of obstructive neighbours but, throughout the process, AOS helped at every step. The installation itself was impeccably carried out - the team were great: courteous, efficient, friendly and highly skilled. AOS are highly professional but also provide a very personalised service. would not hesitate to use them again in the future.
David Simmons Posted on 02/10/2018 , work completed 02/10/2018
Excellent installation of Air Source Heat Pump
Customer Service
Quality
Value
We had an Air Source Heat pump installed by AOS. They provided us with excellent service and the work was done professionally and neatly. There were a couple of issues post installation, which were resolved quickly. We are very pleased with the service we were provided and would recommend AOS for Air Source Heat pump installation.
Jobs at home Posted on 25/09/2018 , work completed 25/09/2018
Great company
Customer Service
Quality
Value
We used AOS to install a new Worcester Bosch boiler. Staff were very helpful throughout the process, the appointment was quickly arranged and the team who completed the work were tidy and completed the job in one day. Very friendly and I can thoroughly recommend. My neighbour is now using AOS for a new boiler also!
Andrew Waller Posted on 09/09/2018 , work completed 09/09/2018
Excellent.
Customer Service
Quality
Value
Complete new central heating system. Everything from start to finish was so professional. Exactly as promised, so tidy and knowledgeable. Would recommend them to anyone.
David, Hertfordshire Posted on 04/09/2018 , work completed 04/09/2018
Swift and professional service
Customer Service
Quality
Value
My wife and I attended presentations in June 2018 by AOS in our village hall regarding air source heat pumps and were impressed. We requested a survey and decided to go ahead and replace our oil fired heating and 30-plus years old boiler. We could have risked keeping the oil boiler going but it would probably have packed up in the depths of winter and it takes time to plan for and install a new heat pump. We were impressed with the swift and tidy work of the installation team, who not only installed the new pump but replaced the hot water cylinder and eight radiators, all within five days. The job was finished within eight weeks of our attending the presentation. The support we received from the team back in the office was excellent and AOS have done everything they said they would do, at the price they quoted.
Helen and Richard Posted on 16/08/2018 , work completed 16/08/2018
Professional and helpful performance.
Customer Service
Quality
Value
In installing our Ecodan air pump, hot water cylinder, new radiators, and new pipe work, the team worked effectively and completed the installation in five days as promised. They worked hard, explained what they were doing and answered questions helpfully. This is an entirely new system for us, but we have confidence in it's integrity and value the guarantees for it's performance. We wholly commend the team and the company.
Michael, Cambridgeshire Posted on 11/06/2018 , work completed 11/06/2018
Vailliant Boiler Service
Customer Service
Quality
Value
I found Sian in the AOS Ltd office very helpful, polite and professional with excellent customer service skills and heating engineer Matt arrived punctually, after a call in advance from Sian, as promised, to let me know the engineer was on his way to me and with an expected arrival time. Matt was very cheerful & professional, despite it being about 80 degrees outside and me advising him that my boiler was located in the loft! My boiler passed its service but Matt happily explained a couple of technical things & seemed very knowledgable about the various packages available when I told him I was considering taking out a maintenance contract. I will definitely be looking into your own one as an option. If and when my boiler needs replacing, I shall also definitely use AOS for the job. Keep up the good work! I have already passed on my AOS recommendations to friends and family. Thank you!
Deborah, Hertfordshire Posted on 02/05/2018 , work completed 02/05/2018
Superb work
Customer Service
Quality
Value
Replacement of a 35 year old 'open' boiler system with a Worcester bosch system - involving difficult removal and complex replumbing and electrics. A hardworking and skilful team did a superb job under difficult conditions.
Neil, Essex Posted on 30/04/2018 , work completed 30/04/2018
100% efficient!
Customer Service
Quality
Value
Couldn't be happier with the service we received from start to finish. If you're thinking of replacing your smelly, noisy oil boiler with an air source heat pump and receiving a rebate from the Government, I'd recommend AOS. Special thanks to Sam and Max for the very tidy installation.
Ronnie in West Wickham, Cambridgeshire Posted on 27/04/2018 , work completed 27/04/2018
Prompt & Professional
Customer Service
Quality
Value
Very impressed with the installation of our air source heat pump. They were efficient, cleaned up each day & kept the place in good order despite this being a major installation. Would recommend them highly.
John, Buckinghamshire Posted on 06/04/2018 , work completed 06/04/2018
Excellent work
Customer Service
Quality
Value
We found AOS to be professional and helpful throughout the process. We were offered a good product without any undue pressure. Facts were clear at all times. Installation was very well conducted.
Marilyn, Bedfordshire Posted on 12/03/2018 , work completed 12/03/2018
Faultless. Very professional.
Customer Service
Quality
Value
From the initial phone call I made as an enquiry, to the handing over of the instructions for the air source heat pump, I have rarely come across a company where everyone has been professional, thoughtful (addressing concerns and keeping house tidy) and so well-informed. I would definitely recommend AOS.
Joanna, Hertfordshire Posted on 20/02/2018 , work completed 20/02/2018
Professional service
Customer Service
Quality
Value
AOS Kept me informed prior to the installation, came when they said they would and did the job exactly as they said they would. Prompt, courteous and professional, and cleaned up afterwards.
Robin, Cambridgeshire Posted on 19/02/2018 , work completed 19/02/2018
Boiler replacement and location move
Customer Service
Quality
Value
Replacement of an existing combi boiler including a move of the boiler to a new location. The interaction with AOS Heating has been a great experience from start to finish …. Communication great, punctuality of work fantastic, quality of work exceeded expectations especially around the pipework and “making good” and the work was carried out in an exceedingly professional manner (good bunch of guys). Very happy with the job all round. Would not hesitate to recommend your service.
Dean Palumbo Posted on 25/01/2018 , work completed 25/01/2018
Mitsubishi Air Source Heat Pump
Customer Service
Quality
Value
We recently took the decision to replace an unreliable oil fired boiler with a Mitsubishi Air Source Heat Pump. Everything has worked out well. We were impressed with the AOS village meeting presentation. Within a week, we had requested a comprehensive survey of our property and all options had been identified. Thereafter, we requested the EPC and subsequently received a full proposal and quote from the office, including RHI explanations. At that point we decided to proceed, impressed by the Mitsubishi product and expertise of the AOS team. 7 new radiators were recommended by the Mitsubishi heat calculator. The Air Source Heat Pump and new radiators were fully installed just 4 weeks after our first consultation. This was first class service. Engineers were professional and skilled, got on with the job; always arriving on time; used dust-sheets and left the property tidy each day. Following completion (which took just 4 days, including fitment of radiators) the lead engineer, who had great knowledge, provided a comprehensive operating run-through and explanation of the aftercare. The install was carried out in cold, winter conditions. The system had a tough initial test and we were impressed that it does achieve target temperature in the property even with below freezing temperatures outside. We would have no hesitation in recommending AOS EEHS Ltd. and the Mitsubishi heat pumps. We have applied for RHI – the payment has been confirmed, and is in line with initial calculations.
David B Posted on 09/01/2018 , work completed 09/01/2018
The trader replied (on 17/01/2018)
Hi Mr Boyd I am very glad to hear how happy you are with your new ASHP installation. i will also pass on your compliments on the engineers on your installation Sam and Ryan. I am also glad the RHI estimate i gave you at quoting stage matches up with what you are going to receive, its nice to know my calculations are on target. We looking forward to hearing from you in future when your annual service is due :)
Efficient, Professional and Tidy
Customer Service
Quality
Value
First class job. Prompt, efficient installation of replacement boiler. I have no hesitation in recommending them to anyone for any plumbing work.
Peter, Hertfordshire Posted on 02/01/2018 , work completed 02/01/2018
The trader replied (on 17/01/2018)
Hi Peter Thanks for the great feedback :) Many Thanks Charlotte.
New Worcester 30ri installation
Customer Service
Quality
Value
Good price, excellent communication & the installation team were friendly, punctual and did a great job
Mr John Posted on 22/12/2017 , work completed 22/12/2017
The trader replied (on 03/01/2018)
Hi Mr John Thank You for your review were glad you had a positive experience with us. If you need anything in the future do not hesitate to let us know. Kind Regards Charlotte.
Great installation
Customer Service
Quality
Value
Problem with hot water, fixed within 5 days by installation of new cylinder. Really efficient.
Adrian, Buckinghamshire Posted on 22/12/2017 , work completed 22/12/2017
The trader replied (on 17/01/2018)
Hi Adrian Thank you for your lovely review, we are so happy we managed to get you up and running just before Christmas. Thanks Charlotte.
New boiler installation
Customer Service
Quality
Value
We had the quote for the replacement boiler Friday and someone was here to fit the boiler Monday. I thought they reacted really quickly because they knew we didn't have any heating. They were here on the Monday morning and just got on with their work. They were polite, no swear words, they tidied up after themselves, it was as if the elves had come to fix the heating! Would definitely recommend them, I was very impressed and will call them for all my heating needs in the future. The lady in the office was really helpful, easy to talk to and phoned back when promised. Whenever I phoned the office, she knew who I was straight away and was able to answer all of my questions. Very professional.
Paula3339 Posted on 09/12/2017 , work completed 09/12/2017
The trader replied (on 03/01/2018)
Hi Paula Thank you very much for your lovely review, we were keen to get you up and running quickly as it was during the extremely cold spell last month, i am glad we managed to complete the install before the snow came! Any quires in the future let us know and we will be happy to help. Many Thanks Charlotte.
Air source heat pump - very pleased
Customer Service
Quality
Value
We are delighted so far with our air source heat pump. The installation process with AOS was very smooth, the system performs as they described, the application for RHI payments was straightforward, and the RHI payments were in line with the initial estimates by the AOS engineer. And we have now received our first RHI payment :)
Richard R Posted on 08/12/2017 , work completed 08/12/2017
The trader replied (on 03/01/2018)
Hi Richard I am delighted to hear that your RHI payments are accurate to what we predicted. It is nice to know that are estimates are on the mark. if you have any further requires in the future do let us know :)
Fabulous
Customer Service
Quality
Value
Been with them for nine years for service of boiler. When it finally needed replacing they were honest and efficient and fitted with our circumstances.
A, Essex Posted on 08/12/2017 , work completed 08/12/2017
Total satisfaction
Customer Service
Quality
Value
Prompt attention to our requirements to replace boiler.
Raymond, Hertfordshire Posted on 30/11/2017 , work completed 30/11/2017
Brilliant job
Customer Service
Quality
Value
Very professional, and good service value for money
Sarah, Hertfordshire Posted on 28/11/2017 , work completed 28/11/2017
The trader replied (on 03/01/2018)
Thanks for the positive feedback Sarah :)
Prompt and Professional, V/Good
Customer Service
Quality
Value
Good company to work with very helpful in all aspects of the installations.
J M, Oxfordshire Posted on 27/11/2017 , work completed 27/11/2017
Very good work
Customer Service
Quality
Value
Arrived on time. Very polite. Good job done. Left job clean and tidy. Very neat workmanship. Well pleased
Andrew, Hertfordshire Posted on 27/11/2017 , work completed 27/11/2017
The trader replied (on 03/01/2018)
Hi Andrew Thanks for the great review, we are glad you had a positive experience with us. Thanks Charlotte.
Very pleased with my new central heating system
Customer Service
Quality
Value
I have recently had a new combi boiler and radiators installed by AOS in my ground floor flat. They removed the old electric storage heaters and water immersion heater from the property. The installation engineers were efficient, competent and tidied up at the end of each day. Although the quotation I received from them was not the lowest of the three I obtained, I am very pleased that I decided to use them (particularly because they used their own employees and did not subcontract). An issue with a new shower was also resolved without difficulty. I would be happy to use them again.
Andrew Holley Posted on 25/11/2017 , work completed 25/11/2017
The trader replied (on 03/01/2018)
Thank You Mr Holley for your kind review. we are delighted that you are happy with the installation and are looking forward to completing the additional electrical work you requested next week. Kind Regards Charlotte.
Excellent service from AOS
Customer Service
Quality
Value
I have recently had a new combi boiler installed by AOS including the removal of the old system. From initial contact through to completion, the service has been efficient and the advice given, very useful. Installation team were competent and tidy. An issue with the original Honeywell controller was sorted out quickly. I believe the price paid was very competitive, excellent service.
Ian Sawyer Posted on 16/11/2017 , work completed 16/11/2017
The trader replied (on 24/11/2017)
Good Morning Mr Sawyer, Thank you very much for your kind review. the issue we had with the faulty honeywell controller was something we have not experienced before but are glad we managed to get it sorted quickly for you :)
Installation of air source heat pump
Customer Service
Quality
Value
I have no hesitation in recommending AOS for their service concerning the installation of our air source heat pump. Their personnel spent considerable time with us discussing the technology when we were considering replacing our oil-fired boiler. Then when it came to the installation; the work was done efficiently, with very little mess left at the end of each day and their engineers were particularly courteous.
mrwest Posted on 08/11/2017 , work completed 08/11/2017
The trader replied (on 24/11/2017)
Hi Mr West we are glad to hear of your positive experience with us and are glad you are happy with your new Air Source Heat Pump installation. Thank you very much for your feedback. The AOS Team.
Very efficient and courteous service
Customer Service
Quality
Value
More experienced engineers, excellent at advising and guiding less experienced engineers. All staff very polite and friendly. Engineers worked very hard. Always happy to take time to explain even though we had many questions! Head office staff always seemed to be looking after us and very keen to ensure we were happy with the service.
James Conway Posted on 08/11/2017 , work completed 08/11/2017
The trader replied (on 24/11/2017)
Hi Mr Conway, i am very happy to hear that you are pleased with your new boiler system and the service you received from us here at AOS. Any questions in the future be sure to give us a call :)
Very professional job
Customer Service
Quality
Value
AOS installed a complete air source heat pump systems for us. From initial sales contact to completion and testing we found them to be thorough and professional. We were provided with detailed information tailored to our requirements, the installation was completed to a high standard by dedicated engineers who took great pains to ensure the work was conducted with minimum disruption to ourselves. The three fitters were great ambassadors for their company, we would definitely recommend your company to others.
Kevin L Posted on 07/10/2017 , work completed 07/10/2017
The trader replied (on 27/10/2017)
Hi Mr Large Thank you very much for you kind review, we take pride in providing a professional yet friendly service and are glad you enjoyed the whole process along the way. we hope you enjoy your new Air Source Heat Pump :)
Happy customer!
Customer Service
Quality
Value
We had a new boiler and radiators fitted. The engineers were polite, efficient and professional from start to finish. The girls in the office were also really helpful. Ten out of ten service, will continue to use them.
Keely, Essex Posted on 03/10/2017 , work completed 03/10/2017
Professional and thorough
Customer Service
Quality
Value
AOS staff did a brilliant job to trace and then fix a recurrent fault with our air source heat pump system. Having found what the issue was and following an ‘on-site' telephone conference between AOS and another company, it was agreed that the unit be replaced despite it being out of warranty. In all of this, AOS engineers turned up on time, they were clean and tidy in their work, and their admin/support staff kept us informed by phone. AOS did a great job sorting this out for us.
Martyn Posted on 02/10/2017 , work completed 02/10/2017
The trader replied (on 27/10/2017)
Hi Martyn, we are so glad that we could help you with your faulty Mitsubishi Air Source Heat Pump. Even though we did not originally install the air source heat pump we are always happy to help a customer in need. All in all a joint effort my Mitsubishi and us meant a great result.
Well done
Customer Service
Quality
Value
They were prompt and gave a good 2 days work. They cleaned up, and left it all clean and tidy. Had new boiler put in. Old one taken out.
Irenie, Hertfordshire Posted on 26/09/2017 , work completed 26/09/2017
The trader replied (on 27/10/2017)
Hi Irenie, thank you very much for your review, we are glad that our engineers displayed a great example of our very high standards.
Very impressed
Customer Service
Quality
Value
We were very happy with everything AOS did for us, it was a large and complex installation which they completed with great skill, no fuss and left a very neat and tidy job (and house).
Duncan, Buckinghamshire Posted on 18/09/2017 , work completed 18/09/2017
The trader replied (on 27/10/2017)
Hi Duncan, thank you very much for your feedback, your installation was a completed one but we love to be able to provide a great solution to customers requirements. we hope you enjoy your new ASHP installation and you and your family over nice and warm :)
My Review
Customer Service
Quality
Value
Friendly, Prompt and Professional.
Premila, Essex Posted on 15/09/2017 , work completed 15/09/2017
The trader replied (on 27/10/2017)
Hi Premila, thank you for taking the time to write a review, we are glad you had a positive experience :)
New Worcester Bosch boiler installed.
Customer Service
Quality
Value
We have been customers of AOS Heating Systems for over 17 years - they installed our Worcester Bosch boiler in 2000. Because of adaptations to our home we needed to move the boiler to a new position and decided, at the same time, to purchase a new boiler. The work was carried out satisfactorily and everything explained. They worked almost an 11 hour day. After dealing with this company for such a long time we had no hesitation in calling them in to fit our new boiler.
Norman Posted on 12/09/2017 , work completed 12/09/2017
The trader replied (on 27/10/2017)
Hi Norman, thank you very much for your kind review we are glad that you are happy with your new boiler installation. We highly value and appreciate our customers so would like to thank you for your repeated business throughout the years.
Professional and efficient.
Customer Service
Quality
Value
Plumbing work was excellent, timemaking could have been better. Failed to replace manhole cover.
Peter, Hertfordshire Posted on 08/09/2017 , work completed 08/09/2017
Conversion of gravity fed system to combi - Happy customer
Customer Service
Quality
Value
I had my old gravity fed system and boiler replaced with a combi boiler system. The work included removal of the loft tank, heating header tank, cylinder and boiler, modifications to the pipework, power flush of the heating pipes, supply and installation of new combi boiler and Magnaclean filter and new bigger bore gas pipe from the gas meter to the boiler. The installers were careful, polite, clean and completed the works within the defined time-frame. It has now been 2 months since the installation and the system has been working faultlessly.
spiro Posted on 05/09/2017 , work completed 05/09/2017
Heat pump, radiator, hot water cylinder installation
Customer Service
Quality
Value
AOS installed an air source heat pump in my house in June 2017. From an initial presentation given in our village hall to an in depth discussion in my house AOS presented themselves as a very professional, experienced and knowledgeable company. As we were having a low temperature system we were advised that some radiators would need to be upgraded to achieve the living temperature of 21C in the house. The calculations done on our house indicated precisely which needed changing along with the size required. Eventually we changed 12 rads which meant AOS had work all around the house. Throughout the 4+ days of work the workmen were always prompt arriving, worked steadily through the day and more importantly to us in a very clean manner. Putting down dust sheets every day, working as cleanly as possible and tidying things away at the end of the day as if no one had been around. Whilst we had a small problem in the first few days AOS were quick to attend and solve the problem and we have not had that issue since that time. I would certainly recommend them to others
Tate Posted on 25/08/2017 , work completed 25/08/2017
Reliable, professional, polite and great service!
Customer Service
Quality
Value
I have used A O S many times in all of my properties and have always been happy with the service they provide; from the person answering the phone to the engineer who comes out, they are polite, professional, clean/tidy, reasonably priced and I've always been happy with the service they provide. I have recommended A O S numerous times to friends, family and business associates and each of them have contacted me to say how happy they were! An 5* service each and every time,
Tim P, Hertfordshire Posted on 22/08/2017 , work completed 22/08/2017
Prompt and professional
Customer Service
Quality
Value
Very impressed, have used them in the past.
Maurice, Hertfordshire Posted on 02/08/2017 , work completed 02/08/2017
My review
Customer Service
Quality
Value
Been a happy customer for 20 years.
Dorothy, Hertfordshire Posted on 18/07/2017 , work completed 18/07/2017
Good job
Customer Service
Quality
Value
The engineers worked extremely hard and did a very good job on the complex installation of our air source heat pump. They were without exception polite, considerate and a pleasure to have working here. All the AOS representatives we came across, on site or otherwise, were helpful and responsive. On the basis of this experience I would recommend AOS without hesitation.
Bobby Gittins Posted on 14/06/2017 , work completed 14/06/2017
Professional job
Customer Service
Quality
Value
Efficient professional job, easy progress. Did what they said they would do. Tidy & no fuss.
Roger, Cambridgeshire Posted on 31/05/2017 , work completed 31/05/2017
Excellent work
Customer Service
Quality
Value
Excellent work, prompt, arrived on time each of the three day project. Efficient and knowledgeable workforce, explained the system very helpfully. I would recommend this company.
Annette, Hertfordshire Posted on 22/05/2017 , work completed 22/05/2017
Air Heat Source Pump
Customer Service
Quality
Value
Excellent installation of a Heat Source pump to replace our oil burner. Very efficient and helpful installers, and effective communication from office staff. Now have constantly cosy house.
IJBMCF Posted on 20/11/2016 , work completed 20/11/2016
Professional installation
Customer Service
Quality
Value
AOS installed a new boiler in my property. The two installers were punctual, polite, tidy and efficient. Their work combined with the excellent admin support from the office showed the professionalism of both the installers and the company.
Christopher, Hertfordshire Posted on 23/08/2016 , work completed 23/08/2016
Excellent job
Customer Service
Quality
Value
AOS have completed a boiler replacement and were a pleasure to deal with. Their operatives are polite, courteous, knowledgeable and on-time. I would highly recommend.
Darren, Hertfordshire Posted on 08/01/2016 , work completed 08/01/2016
Pleased with the finished job
Customer Service
Quality
Value
Chose AOS to install our boiler as offered value for money and were recommended by a neighbour. The boiler was installed competently and worked well. However we weren't happy with the amount of exposed copper piping. We spoke to AOS who agreed to return and reposition the piping. We're now satisfied with the final finished job.
Helen, Hertfordshire Posted on 04/01/2016 , work completed 04/01/2016
Professional
Customer Service
Quality
Value
Know what they were doing, worked efficiently with no time wasting, Polite & professional
Caroline, Hertfordshire Posted on 02/12/2015 , work completed 02/12/2015
Very professional, clean, tidy job.
Customer Service
Quality
Value
The engineers were on time and very professional. Didn't stop until lunchtime, would not even have a cup of tea. Very clean and efficient, did a brilliant job at bricking up the old flue hole in the brick wall. They are coming back to do some more work for us, we were impressed.
Beverley, Hertfordshire Posted on 23/11/2015 , work completed 23/11/2015
Brilliant job.
Customer Service
Quality
Value
AOS fitted a new boiler for us. The engineer arrived on time, and did a very professional job. We would recommend.
Simon, Hertfordshire Posted on 11/11/2015 , work completed 11/11/2015
A job well done!
Customer Service
Quality
Value
A.O.S fitted a new central heating system i.e. boiler, radiators and thermostatic valves. They were punctual, hard working and very efficient. I would certainly recommend their workmanship
Judith, Hertfordshire Posted on 03/11/2015 , work completed 03/11/2015
A "Quality Repair"!
Customer Service
Quality
Value
Another great repair, protection to floor, disposing of all rubbish, punctual everyday. Polite, knowledgeable and carried out work to a high standard of workmanship.
Johnny, London Posted on 26/10/2015 , work completed 26/10/2015
Brilliant, reliable!
Customer Service
Quality
Value
We just wanted to say a big thankyou for doing a brilliant job. Everything seems to be working well, and we are lovely and warm. Can you pass on our thanks to Sam, Sam and Tom. They were such a hard workers and left the house clean and tidy.
Victoria, Hertfordshire Posted on 16/10/2015 , work completed 16/10/2015
My Review
Customer Service
Quality
Value
Good time, keeping, polite, tells you want he is doing, a very nice man. Have recommended him to lady in Park Hill, Ingrid. Clean and tidy.
Janice, Essex Posted on 23/09/2015 , work completed 23/09/2015
My Review
Customer Service
Quality
Value
Prompt & professional etc.
Graham, London Posted on 22/09/2015 , work completed 22/09/2015
Punctual and efficient
Customer Service
Quality
Value
Abbey and Lee installed air source heat pump and radiators and thermostatic valves and new how water cylinder and immersion heater in our home. They were punctual and efficient
David, Milton Kenynes Posted on 01/06/2015 , work completed 01/06/2015