On 18 May 2021 at 10:54:03 BST, ""NY"" wrote:

When my wife and I were looking for a new house, we saw one which had
central heating with an heat-transfer pump and radiators. The house was
perfectly warm, but we both agreed that the constant whine of the stale-air
extraction pump, audible in every room, would have driven us mad very
quickly. The boiler and floor-to-ceiling hot-water cylinder occupied most of
the utility room, and that was excluding the heat-exchanger (on the wall
outside) for extracting heat for the ground.

Interesting. My sister is thinking of getting a ground source pumped system.
Are there any decent sources of experiences of them in use? Hadn't thought of
the pump before . . .

Also, does the cooling of the ground have any effect? I'd have thought
flora/fauna would suffer . . .
--
Cheers, Rob