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Trusted Traders

AOS Energy Efficient Heating Systems Limited

Logo on white
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
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4.9

74 Reviews

About

AOS Heating has been one of the industry's leading experts in the Heating & Boiler industry for over 33 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

4.9
74 reviews
Customer Service
4.9
Quality
4.9
Value
4.8
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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 Essex12/05/2019
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 Cambridgeshire02/05/2019
Prompt and professional
Customer Service
Quality
Value
Failed boiler replaced in 2 days. Minimal disruption. Everything cleaned before completion of the work.
Burt, London10/04/2019
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 Cambridgeshire20/03/2019
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 Buckinghamshire14/03/2019
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 Buckinghamshire06/03/2019
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 Buckinghamshire01/03/2019
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 Hertfordshire20/02/2019
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 Cambridgeshire24/01/2019
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, Hertfordshire14/01/2019