AOS Energy Efficient Heating Systems Limited

AOS installed a new heat pump to replace an old oil boiler. The whole process was easy from start to finish and the installation team did a brilliant job. They were super efficient, quick and friendly. Highly recommended!

We have wanted to install an air source heat pump (ASHP) for several months following the sharp rise in our forecast energy costs (we had both gas and electricity costs). Having looked around for companies in our area (south-east) we decided to go with AOS because of the consistently good reviews they had received. We were not disappointed. Every aspect of their work was utterly professional - Ryan and his installation team were punctual (waiting outside to start work before 8am every day), polite and courteous, and very hard-working, especially given the very hot days we had whilst they were here. Also, their workmanship was top class. I'm not a plumber or heating engineer but the finished installation, both the outside ASHP and the indoor cylinder (in loft) were so neatly laid out and finished off, as were the five new radiators we chose to have to improve the performance of the overall system. The workings and control of the heat pump were explained to us, and everything seems to have been working well since the commissioning date. A word also for the engineer (Lee Wildego) who carried out a very detailed survey of out property prior to the installation team's arrival, and to Charlotte and Lucy at AOS for always being so helpful with my endless questions and queries. Overall, I would recommend AOS without any hesitation.

We already use AOS for our Heating and Boiler Service plan and have always been pleased with their work and so we were happy to use them to install a new boiler to replace our previous one. The estimater gave us a clear idea of what we needed and what work was to be done. The Estimate was competitive. The work was carried out on the agreed date efficiently and we were left with clear instructions how to use the new boiler and the Hive controller. We would recommend AOS to anyone else needing a new boiler.

This is the second time that I've used AOS Heating. They installed a 14kW Mitsubishi Ecodan ASHP in our previous house four years ago, which drastically reduced our heating bills. We just done this again in our new house and are very pleased with the installation. The pipework and electrics have been so neatly done. Very helpful and polite team of installers. If we move house again, I'll use them again, no hesitation.

AOS provided an efficient and effective service from start to finish exceeding our expectations. The surveyor provided sound advice and guidance making us aware of the system requirements. The installation team were prompt, professional, polite and helpful whilst Charlotte and Lucy in the office kept us fully informed and steered us through all the paperwork. I have no hesitation recommending this company.

I’ve had heating cover from AOS for a few years after bad experiences with BG. In contrast, AOS doesn’t try and condemn your boiler each year and their engineers come on time, are tidy and do what they say they will. There was a real test a few days ago for them. Just before a Bank Holiday, the hot water stopped working and I saw a leak near the boiler. The phone was answered by super-efficient Abbie who was rapidly able to ascertain what the problem was and arrange an engineer visit the next day. I don’t usually buy extended warranties or maintenance plans but I wouldn’t be without AOS cover and am sure they apply the same standards to one-off jobs.

The initial callout, not an emergency was completed very much to our satisfaction within 3 hours, from this a recommendation was made by the engineer to make a modification , to eliminate the problem occurring again. This work was carried out at the date and time agreed, once again to our satisfaction. All this work was carried out under our maintenance contract. This a can do firm and has been for the last 20 years to my knowledge

Having moved to an old house with a very old oil boiler we were delighted to be recommended AOS by friend of a friend as a solution to heating the house. Had it not been for them we would have doubted that such a system would be possible for the house, albeit we were comprehensively upgrading and renovating. From the outset, the company was courteous, and prompt and answered the many queries that arose from the planning stage to the final commissioning. They liaised with our plumber and electrician to ensure the installation was as seamless as possible. In addition, they helped overcome supply problems to ensure the system was installed so that we could take advantage of the government Renewable Heat Incentive deal that was closing at the end of March 22. So far so good, but as energy prices rise, it is a system that one needs to get to understand, with its multiple thermostats and timing options.

Everyone in AOS from start to finish were very helpful, willing to discuss and answer all my questions politely and patiently, and the process went completely to plan. The team of young guys were always punctual, polite, worked competently and knowledgeably. I was very pleasantly impressed to see such a young team doing such complicated and responsible work completely confidently. The pump is now installed and is working as it should be. I am very pleased with the whole installation process and felt I was in good hands the whole time. I had solar panels installed earlier to help with the running cost of the pump.

Aos have always given me great service over the many years I have used them. I had a combi boiler installed 5+6 April and am very pleased with the work done. Would recommend AOS to anyone