Earlier quoted context omitted.
My homelab is in a closet that has the water meter for my above-garage apartment. Before I put a heater in the garage itself, I needed to make sure that that closet didn't freeze. I rigged up a temperature sensor to start mprime on a server if the temperature got too low, but higher than the electric heater that's also in that closet. I figured I might as well contribute to research if I'm just burning watts for heat…
Where can I buy a compute-for-heat home system? Edit: I have a heat pump, which is more efficient for heating of course
I don't know how it worked out, but the idea was there.