Comment Wrong Algorithm (Score 1) 16
Bitcoin relies entirely on SHA256 ASIC's for hashing and they typically need replacing every year or two because more efficient models come out making the old ones unprofitable, especially at halvings. Due to the RoI and first-mover advantage the profitable ones are very expensive.
If you want to heat your home with proof-of-work, use a coin that uses RandomX or some other deliberately ASIC-resistant algorithm (usually CPU mining).
You can pool mine on an old CPU and still get a few pennies for your efforts, though if you want to invest in an EPYC and have other uses for it (maybe you have work jobs to run during the day and want more heat on cold nights) it could actually be profitable.
Resistive electric heating is still a very expensive way to heat, though some people don't have better options. There's a development near where I am that was built shortly after Nixon announced Project Independence and every house (cold climate) has wall-to-wall electric baseboard heating.