Many thanks both. Air to air sounds like it might be worth investigating.
The floor isn't insulated......it is solid, with no foundations.
Interesting to hear about the heat sink. Thatch typically is a good insulator, and we have cold roof insulation as well. The walls are generally two layers of outer stone with general scree in between, rather than solid stone, which may make a difference. I have found that thatched houses seem to take a long time to warm up, and a long time to cool down, but once they are at a temperature they will keep there. Ours was lovely and cool this summer, until about the last week or so of the heatwave. It also stays warm in winter - normally we are the last to see any snow melt from the roof.
Edit: there seem to be quite a few use cases out there on ASHP usage for thatched cottages. Thanks again all.
The floor isn't insulated......it is solid, with no foundations.
Interesting to hear about the heat sink. Thatch typically is a good insulator, and we have cold roof insulation as well. The walls are generally two layers of outer stone with general scree in between, rather than solid stone, which may make a difference. I have found that thatched houses seem to take a long time to warm up, and a long time to cool down, but once they are at a temperature they will keep there. Ours was lovely and cool this summer, until about the last week or so of the heatwave. It also stays warm in winter - normally we are the last to see any snow melt from the roof.
Edit: there seem to be quite a few use cases out there on ASHP usage for thatched cottages. Thanks again all.
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