AOS Energy Efficient Heating Systems Limited

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.

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.

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

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,