[lkbm]

The people in my house use space heaters in their rooms. 1500 watts of electricity produces 1500 watts of heat whether you do it via a space heater or a computer.

The only way OP's method is worse is the capital costs of the processors. The energy spent on the actual heating is converted with 100% efficient either way.

[joshlemer]

Well, except that only works in the winter time.

[jack_pp]

depends on your climate, my home needs heating like 8/12 months and gas prices have just surged more than 6x since last winter

[Kerrick]

Our house is electrically heated via a heat pump, which has appreciably more efficiency than a resistance heater (or computer).

Here's a neat video about them: https://www.youtube.com/watch?v=7J52mDjZzto

[lkbm]

Yeah, a heat pump is definitely better if you have it. My point is that if you don't, mining provides the same energy-to-heat conversion ratio.

My house is from the 1800s and only has heating for the kitchen/dining room/living room.