Air Source Heat Pumps continue to grow as a viable, green alternative boiler that provides heating & hot water. How does this energy efficient system work?
www.ukalternativeenergy.co.uk
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will i right its the ones that look light a air con unit out side and inside still looks like you have radiators, not the ground source tpye dan was thinking of, the outside units they fit gages around and put them on a concrete plinth platform and fit near the the kitchen back door location, , the older ones make alot of noise so if in garden you can hear motor fan running, then you also have a hot water tank (remember the old tanks with 1 or 2 imerrsion heater elements ) with a expansion vessal as well with this system,