Can a bitcoin miner heat a home?

Short answer

Yes. A bitcoin miner turns essentially all the electricity it uses into heat, the same as an electric resistance heater. A liquid-cooled miner can move that heat into a water heater, radiant floors, a furnace coil, or a hot tub, while it earns bitcoin.

Every watt a miner draws ends up as heat. Air-cooled miners blow that heat out with loud fans; liquid-cooled systems capture it in a water or oil loop instead, so it can be piped to where a home needs it.

How much heat is that?

One kilowatt of power makes about 3,412 BTU per hour of heat. The Aqueon runs at about 4.2 kW in normal mode, so it delivers roughly 14,300 BTU per hour. The HashTub runs at about 4 kW.

SystemTypical powerHeat outputBest for
Aqueon Hydro~4.2 kW (rated 5 kW)~14,300 BTU/hrHot water, radiant floors, forced air
HashTub~4 kW~13,600 BTU/hrHot tubs; home heating with a matched heat exchanger

What it can heat

  • Domestic hot water, by preheating or heating your tank
  • Radiant floor loops through a manifold
  • Forced air, through a water coil in the air handler
  • Hot tubs, spas, and pools through a heat exchanger
  • Buffer tanks, to store heat for later