I did that some after eth stopped mineable.

My office-room was heated mostly by resistance, plus whatever gas-fired heat trickled in through the doorway.

I didn't have as much power available there as I had in the basement, but I had enough to mine a bit of crypto to supplement the resistance heater. :)

From one perspective: It was never directly profitable to do this. Other than eth, nothing has ever been profitable-enough for me to care about.

From another perspective: I was going to burn the energy anyway. The Joules cost the same and add the same amount of warmth either way, so I might as well get them with a side dish of free crypto.

Good times.

(These days, I transcode videos with Tdarr during the winter.)