Heatbit unveils Bitwater, a water heater that mines Bitcoin

Your water heater spends its whole life turning electricity into heat. Heatbit thinks it should also be earning Bitcoin while it does that. The Delaware-based company has launched Bitwater, a residential heating element that warms water and mines Bitcoin at the same time. It is built to fit into the electric water tanks people already own. Preorders opened on October 22, 2026, and first shipments are expected in the first quarter of 2027. What Bitwater actually does Bitwater swaps in as the heating element inside an existing electric water tank. Instead of a plain resistive coil, the element runs SHA-256 hashing, the cryptographic puzzle-solving that secures the Bitcoin network. The waste heat from that computation then warms the water. Heatbit says the device delivers up to 34 TH/s of hashing power. TH/s stands for terahashes per second, a measure of how many guesses a machine makes at the Bitcoin puzzle each second. Efficiency is rated at 12 J/TH, or joules per terahash. Lower is better, and 12 J/TH puts the hardware squarely in modern ASIC territory rather than hobbyist tinkering. Multiply those two numbers and peak power draw lands at about 408 watts. According to Heatbit, home...