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Endorsed by Which?
AOS Energy Efficient Heating Systems Limited
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
My work
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
253 reviews
Recommended
Recommended
by 99% of customers
Sort by
Installation of Samsung Air Source Heat Pump
Customer Service
Quality
Value
AOS did a well planned and efficient installation of a Samsung Heat pump and some radiator changes. Before we ordered, they advised us, based on their many years of experience of heat pump installations. The staff were friendly, knowledgeable and efficient. They cleared up after each visit and finished off all the small jobs.
Customer in Hertfordshire
, work completed
Recommended
Professional and friendly service
Customer Service
Quality
Value
AOS fitted a new towel rail for me and carried out a boiler service. They were friendly, professional, very thorough, cleaned up and explained everything. I have used them before and wouldn’t hesitate to recommend them. Their prices are reasonable too.
Customer in Hertfordshire
, work completed
Recommended
EXCELLENT Company in every respect
Customer Service
Quality
Value
Ben, the service engineer who came to service our air source heat pump arrived on time after telephoning that he was on his way to us. He was most well mannered, polite and informed us about exactly what he would be doing. He thoroughly checked all aspects of the heat pump, the control panels and hot water tank. He also adjusted all the radiators and checked their efficiency. Before leaving he exiled what he had done and familiarised us on how to use the controls on the control panel and what safety precautions we needed to take in case of any problems. His explanations were clear and he checked with us to make sure that we understood what he had explained. He was a most pleasant and positively communicant person who it was pleasure to have doing a service for us. He was excellent in every respect.
Customer in Central Bedfordshire
, work completed
Recommended
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
, work completed
Recommended
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
, work completed
Recommended
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
, work completed
Recommended
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
, work completed
Recommended
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
, work completed
Recommended
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
, work completed
Recommended
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
, work completed
Recommended