My partner and I recently bought an old house with complicated and inefficient hot water and heating systems, both delivered by a wood fired stove with back boiler. Cold water was through a gravity fed system supplied by a fresh water bore hole. We spoke to several MCS accredited Air Source Heat Pump (ASHP) engineers about changing the heating arrangements, Alistair was by far the most technically interested in our set up, what we could achieve and how to make that fit with our needs. He recommended a constant pressure water pump and a high temperature ASHP, this was the most suitable option when we did our own independent research. He wasn't affiliated to certain brands like the other engineers we spoke with. Alistair and team were with us for 3 days, decommissioning our old heating and cold water system and retro fitting the new. Their workmanship is amazing, they consulted us at each important decision and when I had a few snagging issues, they rectified without any fuss. It was a pleasure to have Alistair and his team in our house, they treated it and us with respect. Their attention to detail and workmanship is first class. Highly recommended.