has anyone ever actually calculated that? like what if we used old ASICs to heat our rooms, would they be more efficient than a heater after accounting for the small number of bitcoin you'd get?
Heat pumps are far more efficient than resistive heating, so this wouldn't be economical.
I'd imagine that will be too loud to be practical.
that's not a great way to think. One needs to think if something is possible before trying to solve unrelated issues that some engineering can probably figure out.