I dare say that in many situations, an aircon running on heating would be a better heater than an old miner, because of typical COP, eg. using 1000 watts to do the same amount of heating as a 3000w fan heater / oil heater / miner. Not to mention floor space usage / noise.
Eg. a miner that's 96 TH/s, 2400 watts, 1.5% pool fee, would lose about $3.14/day @ $0.15/kwh power cost, compared to a small aircon using say 800 watts to pump 2400 watts running 24/7 would cost about $2.88/day (of course if your aircon never stops running, it's undersized.)

Modest/excess wattage spent on lotto mining sounds good.