Heat pumps might work in the relatively mild UK climate, but don’t the buried water loops require a considerable amount of space? From what I have seen of UK housing large yards are not that common.
—”Heat pumps might work in the relatively mild UK climate, but don’t the buried water loops require a considerable amount of space?”
Progress marches on...
We had 14 DEGREES BELOW ZERO FAHRENHEIT over Christmas so I did a propeller head experiment and let the heat pumps run without the radiant floors.
My HP is rated for -13F but is still under warranty...
The HP kept doing it but used more energy and had some cold spots. My radiant floors would have performed as good as ever.
Because the COP goes below two at zero F.the gas floor heat would cost less at sub-zero F and below.
But I wanted to see what the HP could do.
Not just ground loops anymore!
The closed well system, a guy I worked with had one on a small lot.
A well is drilled and a loop or two of PEX is run down the well. Only heat is exchanged NO mixing...