NokiaFree heat ends if bitcoin falls below $70,000.

SunBit runs 30 boilers, 29 of them in Finland, turning a household heating bill into a bet on bitcoin.

Every kilowatt-hour a miner draws becomes heat, and SunBit says one machine earns about $6,100 against $5,200 in power yearly.

The 2028 halving cuts mining rewards in half, and SunBit’s payback calculator leaves it out.

On SunBit’s own inputs, free heat after 2028 needs bitcoin near $131,000, against $81,500 on Friday.

How each outlet framed it
CoinDesk
frames bitcoin heating as a payback-time problem, flagging the 2028 halving as a deadline SunBit's calculations omit

Sources: CoinDesk