We use cookies to allow us and selected partners to improve your experience and our advertising. By continuing to browse you consent to our use of cookies. You can understand more and change your cookies preferences here.

Endorsed by Which? Trusted Traders

AOS Energy Efficient Heating Systems Limited

Profile thumb aos
4.8

155 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

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
    • Biomass
    • Solar panels
    • Solar water heating

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.

4.8
155 reviews
Customer Service
4.9
Quality
4.9
Value
4.7
Sort by
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.