Mining to heat your home
Short answer: a miner heats a room exactly like an electric space heater, and pays a little back while it does. It beats a plain space heater, but usually not a heat pump.
1. The heat isn't wasted
A mining chip turns almost all of its electricity into heat. In a data center that heat is a problem someone pays to blow away. In your home in winter, it's heat you'd pay for anyway. That's the whole idea: use one bill twice, once for warmth and once for mining.
Take the Avalon Mini 3. It mines at about 800 W, so running it all month costs about $88 at $0.15/kWh. An 800 W space heater would cost the same and give the same heat. The miner also pays back about $35/mo from pool mining, so your heat costs about $53/mo instead of $88.
2. Heater miners side by side
Type your power price above and the power column updates.
| Miner | Heat (BTU/h) | Power /mo | Mining pays back /mo | Beats a heat pump below | Price today |
|---|---|---|---|---|---|
| Avalon Nano 3S | ≈478 | $16 | $5.70 | $0.11 | from $219 |
| Heatbit Canvas | ≈1,024 | $33 | $9.50 | $0.086 | see shops |
| GekkoScience KBox 22 | ≈1,126 | $37 | $20 | $0.172 | from $899 |
| Heatbit Trio | ≈1,365 | $44 | $9.50 | $0.064 | see shops |
| Avalon Mini 3 | ≈2,730 | $88 | $35 | $0.122 | from $789 |
| GekkoScience KBeast 50 | ≈2,730 | $88 | $47 | $0.162 | see shops |
| D-Central StealthMiner | ≈2,934 | $95 | $24 | $0.078 | from $610 |
| Heatbit Maxi | ≈5,118 | $165 | $37 | $0.066 | see shops |
| Avalon Q | ≈5,712 | $184 | $85 | $0.14 | from $1,499 |
Running 24/7 at the stated mining watts. Heat = watts × 3.412. "Mining pays back" is the pool estimate, which changes with Bitcoin's price and network difficulty. "Beats a heat pump below" is the power price under which the miner's heat, after the mining payback, costs less than a heat pump making the same heat with about half the electricity. Prices are the cheapest in-stock listing we found, before shipping and tax.
3. What it beats, and what it doesn't
- Beats a plain electric space heater or baseboard heat: same power, same heat, plus the mining payback.
- Usually loses to a heat pump: a heat pump moves heat in from outside instead of making it, and the US Department of Energy says that cuts electricity for heating by about 50%. A miner only wins with cheap power, as the last column shows.
- Gas heat: depends on your gas and power prices. Compare your bills before switching.
4. Other ways to reuse the heat
Hot water is the other big heat bill. The Heatbit Bitwater swaps the lower element in an electric tank water heater for mining chips, so the tank heats your water while it mines. It's a pre-order that Heatbit says ships in early 2027, and it only fits standard electric tank heaters.
- Run it only in heating season: on in the cold months, down or off in summer, so you only pay for heat you want.
- Put it where you need warmth: a cold bedroom, a home office, a basement or a garage workshop.
- Use a thermostat or low mode: most heater miners can run cooler, so a big one won't overheat a small room.
Questions
Can a Bitcoin miner heat a room?
Yes. Nearly every watt a miner uses comes out as heat, like an electric space heater, so a 1,000 W miner warms a room about as much as a 1,000 W heater.
Is a heater miner cheaper than a space heater?
Usually a little. Both turn the same power into the same heat, and the miner also earns a small amount from pool mining, so your heat costs a bit less. How much depends on Bitcoin's price and the network.
Is a heater miner cheaper than a heat pump?
Usually not at typical US power prices. The US Department of Energy says a modern heat pump uses about half the electricity of electric resistance heat for the same warmth. The table shows the power price below which each miner wins.
What about summer?
If you don't need the heat, the power is just a mining cost. Most owners turn heater miners down or off in warm months, or run them only on cheap power.
Keep reading
Not financial advice. These are estimates; mining earnings aren't guaranteed and change with Bitcoin's price and network difficulty. Follow the maker's guidance on circuits and placement.