I've been looking at them on and off to do at my own expense but I can't really see them being economically and better than what I have (well, before gas went up like it has!).
My neighbour got a quote for an ASHP a while back, which would have attracted some kind of grant, and lo and behold the cost was the total of the grant plus quite a bit of his own dish.
A mate down GLoucestershire way put in a large GSH system a few years back and despite quite generous grants and payments he reckons it's quite expensive to run and insufficiently flexible.
I guess it's a bit like moving to an electric vehicle - you have to accept that things will be different and change your thinking and expectations a bit.
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