Heatbit turns your water heater into a silent Bitcoin miner with new “Bitwater” element
Heatbit, the startup best known for space heaters that hide Bitcoin miners, has announced a new product that does the same for home water heaters: Bitwater, a drop-in heating element that mines Bitcoin while it heats your tank. The company introduced the device in a tweet on Oct. 22, 2026, calling it “Same heat, same electricity, plus bitcoin.”
How it works
- Bitwater replaces the resistance wire inside a standard electric water-heater element with 20 Bitmain BM1370 mining chips. The waste heat produced by the chips warms the tank’s water, effectively turning unavoidable heating energy into potential BTC revenue.
- Because the chips are cooled by the water itself, the unit requires no fans and runs quietly, Heatbit says.
Specs and installation
- Hashrate: up to 34 TH/s.
- Power draw: up to 600 W (compared with typical U.S. tank elements that draw around 4,500 W).
- Efficiency: about 12 joules per terahash.
- Form factor: fits the standard 1-inch element port on 30–80 gallon electric tanks common in the U.S. and Canada, including models from A.O. Smith, Rheem, Bradford White, Whirlpool and GE.
- Installation: described as DIY—turn off the breaker, drain the tank, unscrew the old element and thread in Bitwater with the included wrench. No plumbing changes or new circuit required, Heatbit says.
- Operation: because Bitwater runs at lower wattage, it heats more slowly and runs for longer than conventional high-wattage elements; the tank’s existing upper element remains as a backup during peak demand.
User controls and monitoring
- Owners can monitor water temperature, hashrate and mining earnings through Heatbit’s app, and can choose between solo mining or joining a pool. Mined coins are sent to an address controlled by the user, not Heatbit.
Price, availability and testing
- Heatbit opened refundable preorders for a “Genesis” production run at $899; subsequent batches may cost up to $1,299. The company says preorders are refundable and slated to ship in Q1 2027.
- The company tested Bitwater during winter in households of four and five in New York and Florida, and has teased a future product for homes with gas water heaters.
Earnings outlook
- Heatbit has not published its own earnings forecast; instead it reposted a reply from xAI’s Grok estimating about $1–$1.25 per day and noting that “estimates aren't guarantees.”
- Using Hashrate Index’s reported hashprice of roughly $36.73 per petahash per day, a 34 TH/s element (0.034 PH/s) at full output would theoretically earn about $1.25/day — roughly $455/year — before accounting for uptime, local electricity pricing and changes in Bitcoin price and mining difficulty. Heatbit says the element is built to run more than 80% of the time; actual earnings will vary.
Why Heatbit is pitching this
- Heatbit frames Bitwater as a way to decentralize mining by spreading it into homes. The company points to global water heating as a major electricity consumer—about 300 TWh/year—compared with roughly 170 TWh/year for the entire Bitcoin network, arguing there is room to embed mining into existing household energy use.
- Heatbit also positions home miners as independent operators in contrast to large public miners. The company criticized public miners moving into AI workloads and liquidating coins, writing that “Home miners answer to no one.”
Industry context
- Large miners have indeed been striking deals with cloud and AI players: Bernstein reported 17 deals worth more than $110 billion over two years, covering roughly 6 GW of contracted power to companies including Google, Amazon, Microsoft, Nvidia and CoreWeave. Bernstein projects AI revenue for miners to grow substantially through 2030.
- Mining and AI centers operate differently: miners can be “interruptible,” reducing load to relieve grid pressure, while AI data centers typically require continuous power. That distinction has been used to justify miners’ role as flexible energy customers.
A line from Heatbit’s playbook
- Heatbit’s first product, a space heater with a built-in miner, launched in 2023 at nearly $700. Founder Alex Busarov told Decrypt then that the device would always yield some value because the heat displaced conventional heating costs: “Dyson doesn't make you any money. This one does.”
Bottom line
Bitwater is a novel approach to household-scale Bitcoin mining: lower-power, water-cooled mining tucked into an appliance that already consumes energy. Its economics depend on uptime, local electricity costs and Bitcoin’s ever-changing price and difficulty, but for users who want to experiment with home mining and repurpose heat that would be produced anyway, Bitwater offers a quieter, plug-in option—if they’re willing to preorder and wait until Q1 2027 for delivery.
Heatbit, the startup best known for space heaters that hide Bitcoin miners, has announced a new product that does the same for home water heaters: Bitwater, a drop-in heating element that mines Bitcoin while it heats your tank. The company introduced the device in a tweet on Oct. 22, 2026, calling it “Same heat, same electricity, plus bitcoin.”
How it works
- Bitwater replaces the resistance wire inside a standard electric water-heater element with 20 Bitmain BM1370 mining chips. The waste heat produced by the chips warms the tank’s water, effectively turning unavoidable heating energy into potential BTC revenue.
- Because the chips are cooled by the water itself, the unit requires no fans and runs quietly, Heatbit says.
Specs and installation
- Hashrate: up to 34 TH/s.
- Power draw: up to 600 W (compared with typical U.S. tank elements that draw around 4,500 W).
- Efficiency: about 12 joules per terahash.
- Form factor: fits the standard 1-inch element port on 30–80 gallon electric tanks common in the U.S. and Canada, including models from A.O. Smith, Rheem, Bradford White, Whirlpool and GE.
- Installation: described as DIY—turn off the breaker, drain the tank, unscrew the old element and thread in Bitwater with the included wrench. No plumbing changes or new circuit required, Heatbit says.
- Operation: because Bitwater runs at lower wattage, it heats more slowly and runs for longer than conventional high-wattage elements; the tank’s existing upper element remains as a backup during peak demand.
User controls and monitoring
- Owners can monitor water temperature, hashrate and mining earnings through Heatbit’s app, and can choose between solo mining or joining a pool. Mined coins are sent to an address controlled by the user, not Heatbit.
Price, availability and testing
- Heatbit opened refundable preorders for a “Genesis” production run at $899; subsequent batches may cost up to $1,299. The company says preorders are refundable and slated to ship in Q1 2027.
- The company tested Bitwater during winter in households of four and five in New York and Florida, and has teased a future product for homes with gas water heaters.
Earnings outlook
- Heatbit has not published its own earnings forecast; instead it reposted a reply from xAI’s Grok estimating about $1–$1.25 per day and noting that “estimates aren't guarantees.”
- Using Hashrate Index’s reported hashprice of roughly $36.73 per petahash per day, a 34 TH/s element (0.034 PH/s) at full output would theoretically earn about $1.25/day — roughly $455/year — before accounting for uptime, local electricity pricing and changes in Bitcoin price and mining difficulty. Heatbit says the element is built to run more than 80% of the time; actual earnings will vary.
Why Heatbit is pitching this
- Heatbit frames Bitwater as a way to decentralize mining by spreading it into homes. The company points to global water heating as a major electricity consumer—about 300 TWh/year—compared with roughly 170 TWh/year for the entire Bitcoin network, arguing there is room to embed mining into existing household energy use.
- Heatbit also positions home miners as independent operators in contrast to large public miners. The company criticized public miners moving into AI workloads and liquidating coins, writing that “Home miners answer to no one.”
Industry context
- Large miners have indeed been striking deals with cloud and AI players: Bernstein reported 17 deals worth more than $110 billion over two years, covering roughly 6 GW of contracted power to companies including Google, Amazon, Microsoft, Nvidia and CoreWeave. Bernstein projects AI revenue for miners to grow substantially through 2030.
- Mining and AI centers operate differently: miners can be “interruptible,” reducing load to relieve grid pressure, while AI data centers typically require continuous power. That distinction has been used to justify miners’ role as flexible energy customers.
A line from Heatbit’s playbook
- Heatbit’s first product, a space heater with a built-in miner, launched in 2023 at nearly $700. Founder Alex Busarov told Decrypt then that the device would always yield some value because the heat displaced conventional heating costs: “Dyson doesn't make you any money. This one does.”
Bottom line
Bitwater is a novel approach to household-scale Bitcoin mining: lower-power, water-cooled mining tucked into an appliance that already consumes energy. Its economics depend on uptime, local electricity costs and Bitcoin’s ever-changing price and difficulty, but for users who want to experiment with home mining and repurpose heat that would be produced anyway, Bitwater offers a quieter, plug-in option—if they’re willing to preorder and wait until Q1 2027 for delivery.