Heatbit, the maker of Bitcoin-mining space heaters, has unveiled Bitwater, a water heater element built with 20 Bitcoin mining chips that screws into electric tanks already installed in homes across the U.S. and Canada. The company announced the device in a post on X on Thursday, October 22, 2026.

The element is rated at up to 34 terahashes per second (TH/s)—a terahash being one trillion hash computations per second—while drawing up to 600 watts, and the first production run is available to preorder at $899, with later batches priced at up to $1,299. Heatbit, which lists the product on its official website, is pitching Bitwater as a way to decentralize Bitcoin mining, noting that households collectively spend more electricity heating water than the entire Bitcoin network consumes.

Introducing Bitwater: the water heater element that mines Bitcoin. It screws into the electric tank you already have. Physically decentralized mining that runs no matter what 🧵 Heat water. Mine Bitcoin. Same tank. pic.twitter.com/pRdxPbmpXM

— Heatbit (@heatbit_com) October 22, 2026

Rather than the conventional resistance wire in a standard electric water heater element, Bitwater substitutes 20 of Bitmain's BM1370 mining chips, so the heat their computation generates warms the water directly. "Same heat, same electricity, plus bitcoin," Heatbit wrote, arguing that "the electricity was going to be spent on hot water anyway."

The chips run at an efficiency of 12 joules per terahash—a measure of the energy consumed per unit of computing work—and because the surrounding water cools them, the unit operates with no fans and no noise, according to the company.

Heatbit describes installation as a do-it-yourself job: switch off the breaker, drain the tank, unscrew the old element and thread Bitwater in using an included wrench. The device fits the standard one-inch port on regular 30- to 80-gallon electric tanks in the U.S. and Canada—including models from A. O. Smith, Rheem, Bradford White, Whirlpool and GE, the company said in a follow-up tweet—with no plumbing changes or new circuit required.

At up to 600 watts, Bitwater draws far less power than the 4,500-watt elements common in U.S. tanks. Those elements heat water quickly and then shut off, while Bitwater heats more slowly and runs for longer, Heatbit explained. When demand spikes, the tank's existing upper element still provides backup.

Users can track water temperature, hashrate and earnings in an app and choose between solo mining and joining a pool—an arrangement in which many miners combine their hashrate and split the rewards—with mined Bitcoin going to an address they control.

Preorders for the first production run, which Heatbit calls its "Genesis batch," are refundable and due to ship in the first quarter of 2027. The company said it tested the element through the winter with households of four and five people in New York and Florida, and teased a future product for homes with gas water heaters.

Estimated earnings

Heatbit has not published its own earnings estimate. Instead, the company shared a reply from xAI's Grok chatbot putting earnings at about $1 to $1.25 a day, adding that "estimates aren't guarantees."

That range is in line with Decrypt's own figures. At the current hashprice of about $36.73 per petahash per second per day—the industry's benchmark for daily mining revenue per unit of hashrate—according to Hashrate Index, an element running at its full 34 TH/s would mine about $1.25 worth of Bitcoin a day, or roughly $455 a year. Heatbit says the element is built to run more than 80% of the time, and earnings would rise and fall with Bitcoin's price and network difficulty.

Heatbit's home mining pitch

Heatbit is pitching Bitwater as a way to spread Bitcoin mining across homes. Households worldwide use about 300 terawatt-hours of electricity a year heating water, compared with roughly 170 terawatt-hours for the entire Bitcoin network, the company said.

"Public miners are fleeing to AI and dumping coins to pay Wall Street and CEO salaries," Heatbit wrote. "Home miners answer to no one."

Large public miners have been moving into AI. Bitcoin miners struck 17 deals worth more than $110 billion over two years, contracting out roughly 6 gigawatts of power to companies including Google, Amazon, Microsoft, Nvidia and CoreWeave, Bernstein said earlier this year. The bank expects AI revenue at the miners it covers to grow from $1.2 billion in 2026 to $10.7 billion by 2030, and has said the sector's planned power capacity of more than 27 gigawatts makes miners key suppliers for the AI boom.

The two businesses work differently, though. Bitcoin miners can switch off to relieve pressure on the grid, while AI data centers need power around the clock. "We're interruptible [as Bitcoin miners], whereas a traditional data center needs (to be) on 100% of the time," Shanon Squires of Compass Mining told Decrypt in March 2025.

Heatbit's first product, a space heater with a built-in miner, cost almost $700 in 2023. Founder Alex Busarov told Decrypt at the time that it would always earn something however mining economics changed, because the heat it produced was replacing a conventional heater's output. "Dyson doesn't make you any. This one does," he said.