AOS Energy Efficient Heating Systems Limited

We have just replaced our LPG heating system with an air source heat pump, installed by AOS. We were very pleased with the way the work was carried out and appreciated the courtesy of everyone we dealt with. We were grateful for the lack of 'pressure' before we went ahead, and feel supported post-installation.

AOS provided my parent's Worcester Bosch boiler around 16 years ago and, with Winter 2018 approaching I considered it time to assess and replace if necessary. I asked AOS to provide a quote when servicing the existing boiler which they promptly did. The quote (for London) was extremely reasonable, and I recommended to my mother to proceed, despite always obtaining several quotes normally. The removal was more difficult due to the boiler being located in the loft, but AOS undertook the task on and within the time quoted, with no fuss or mess. New boiler works perfectly. My mother (now on her own), asked them back to explain operation again, which AOS happily did. As I live over 225 miles away any such undertaking is a concern, but the people from AOS provided a top class, professional service from start to finish, giving me considerable comfort throughout, great stuff.

We had AOS replace our existing oil-fired boiler central heating system with a new Ecodan air source heat pump as we wanted something more reliable and less costly to run. We had done a considerable amount of research into alternative heating systems and air source heat pumps were the best option for us. AOS were our choice of installer as we were impressed by the open and honest information we were given by them from the start as well as the lack of pressure selling which was refreshing. It took us some time to take the final decision and they were fine with that. The job was carried out with efficiency and courtesy and we felt that the installation team were taking care of our house during the work. There was a small accident where an item of furniture got knocked but AOS were very quick to apologise and rectify the situation. I would recommend them to anyone for similar work.

AOS is an outstanding company. We have been delighted not just with the ASHP installation itself but also the full support we have received both before and after the installation. Our project was particularly problematic because of obstructive neighbours but, throughout the process, AOS helped at every step. The installation itself was impeccably carried out - the team were great: courteous, efficient, friendly and highly skilled. AOS are highly professional but also provide a very personalised service. would not hesitate to use them again in the future.

We had an Air Source Heat pump installed by AOS. They provided us with excellent service and the work was done professionally and neatly. There were a couple of issues post installation, which were resolved quickly. We are very pleased with the service we were provided and would recommend AOS for Air Source Heat pump installation.

We used AOS to install a new Worcester Bosch boiler. Staff were very helpful throughout the process, the appointment was quickly arranged and the team who completed the work were tidy and completed the job in one day. Very friendly and I can thoroughly recommend. My neighbour is now using AOS for a new boiler also!

My wife and I attended presentations in June 2018 by AOS in our village hall regarding air source heat pumps and were impressed. We requested a survey and decided to go ahead and replace our oil fired heating and 30-plus years old boiler. We could have risked keeping the oil boiler going but it would probably have packed up in the depths of winter and it takes time to plan for and install a new heat pump. We were impressed with the swift and tidy work of the installation team, who not only installed the new pump but replaced the hot water cylinder and eight radiators, all within five days. The job was finished within eight weeks of our attending the presentation. The support we received from the team back in the office was excellent and AOS have done everything they said they would do, at the price they quoted.

I found Sian in the AOS Ltd office very helpful, polite and professional with excellent customer service skills and heating engineer Matt arrived punctually, after a call in advance from Sian, as promised, to let me know the engineer was on his way to me and with an expected arrival time. Matt was very cheerful & professional, despite it being about 80 degrees outside and me advising him that my boiler was located in the loft! My boiler passed its service but Matt happily explained a couple of technical things & seemed very knowledgable about the various packages available when I told him I was considering taking out a maintenance contract. I will definitely be looking into your own one as an option. If and when my boiler needs replacing, I shall also definitely use AOS for the job. Keep up the good work! I have already passed on my AOS recommendations to friends and family. Thank you!