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Endorsed by Which? Trusted Traders

AOS Energy Efficient Heating Systems Limited

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4.8

162 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
162 reviews
Customer Service
4.9
Quality
4.9
Value
4.7
Sort by
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