On: Heat pumps of the 1800s are becoming the technolog...

[ComputerGuru]

They're from London, so it's the "not even cold but it's negative" rather than "actually cold and heat pumps aren't a good idea" measurement.

[Freestyler_3 → ComputerGuru]

for those places where the scop is low, you have to drill for heat. If that's not possible then maybe a system where you can burn wood to suck the heat out of that.