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1. What is the Heatbit Bitwater bitcoin water heater?
Heatbit, a company that makes space heaters with built-in bitcoin miners, announced a new product on Thursday, October 22, 2026: Bitwater, a bitcoin water heater element that mines while it heats. The part replaces the resistance wire inside a standard electric water heater element with 20 mining chips, and the company says it draws the same electricity that would otherwise have gone into heating the water. Preorders for the first production run cost $899, later batches will cost up to $1,299, and shipments are scheduled for the first quarter of 2027.
The idea rests on a simple observation about physics. Every watt consumed by a mining chip ends up as heat, and a water heater exists to turn electricity into heat. Heatbit's pitch is that the two activities can share a single stream of power, so that the warmth produced by computing is not wasted but absorbed by the water in the tank. The company summed up the proposition in a short slogan: same heat, same electricity, plus bitcoin.
In its launch post, Heatbit described the element as something that screws into an existing tank and mines what it calls physically decentralized bitcoin, running regardless of conditions. The wording ties the product to a long-running argument in the mining industry about whether the network should be run by a few large operators or spread across many small participants.
2. What are the technical specifications?
Bitwater uses 20 Bitmain BM1370 chips, a mining processor from the Chinese hardware maker Bitmain. Heatbit rates the element at up to 34 terahashes per second (TH/s) on up to 600 watts of power, which works out to an efficiency of 12 joules per terahash. Hashrate measures how many guesses per second a miner makes in the contest to add a block to the bitcoin blockchain, and joules per terahash measures how much energy each unit of that work consumes.
Because the chips sit in the tank, the water itself carries the heat away. Heatbit says this means the element needs no fans and makes no noise, which removes two of the most common complaints about home mining equipment. Air-cooled miners are loud and require ventilation, while a water-cooled design keeps the noise inside the tank.
Users are expected to follow the progress of the device in an app. It shows water temperature, hashrate and earnings. Owners can choose between solo mining and joining a mining pool, and any bitcoin that is earned is sent to an address that the user controls, so the company does not hold the proceeds.
3. Can an ordinary household install it?
Heatbit describes installation as a do-it-yourself task. The owner switches off the breaker, drains the tank, removes the old element and fits the Bitwater unit with a wrench that is included in the package. The element fits the standard one-inch port found on electric tanks of 30 to 80 gallons in the United States and Canada, and Heatbit named A. O. Smith, Rheem, Bradford White, Whirlpool and GE as compatible brands in a follow-up post. The company says no plumbing changes are needed and no new electrical circuit is required.
Anyone considering the product should note that working on a water heater involves mains electricity and a pressurized vessel, so the steps above are ones that many homeowners would prefer to hand to a licensed tradesperson. The company's description is of the process it intends, not an assurance that every home is suited to it.
Power draw is the other practical point. Bitwater uses far less power than the 4,500 watt elements commonly fitted to American tanks. A conventional element heats quickly and then switches off, while Bitwater heats slowly and has to run for longer, according to Heatbit's explanation. The tank's existing upper element stays in place as a backup, which means it can step in when household demand for hot water spikes.
4. How much bitcoin could it earn?
Heatbit has not published an earnings estimate of its own. It did share a reply from an AI chatbot, Grok from xAI, which projected roughly $1 to $1.25 a day while cautioning that such estimates are not guarantees. A calculation based on mining revenue data points to a similar number. At a hashprice of about $36.73 per petahash per second per day, a full 34 TH/s would yield around $1.25 a day, or roughly $455 a year.
Hashprice is the revenue a miner earns per unit of hashrate per day, and it moves with the bitcoin price and with network difficulty, the setting that adjusts how hard it is to find a block. Higher difficulty or a lower bitcoin price reduces earnings, so the figures above are a snapshot, not a forecast. Heatbit says the unit is built to run more than 80% of the time.
Against an $899 entry price, those numbers frame the product as a modest offset to household costs and not as a stand-alone income stream. Buyers would also have to account for the electricity the element consumes, although Heatbit's argument is that this power is already being spent on heating water.
5. Why does Heatbit say home mining matters?
Heatbit frames Bitwater as a way to decentralize mining. The company points out that homes worldwide use about 300 terawatt-hours of electricity each year to heat water, compared with about 170 terawatt-hours for the whole bitcoin network. By its reasoning, a small share of that household energy could carry out the network's work as a by-product.
The company also takes aim at large public mining firms, arguing that they are pivoting to artificial intelligence and selling coins to fund payouts to Wall Street and pay for executives. Home miners, in Heatbit's words, answer to no one. The claim is a marketing position and a view about incentives, not a finding of fact, but it echoes a real shift in the sector.
That shift is documented by the research firm Bernstein, which counted 17 deals worth more than $110 billion over two years in which miners contracted about 6 gigawatts of power to Google, Amazon, Microsoft, Nvidia and CoreWeave. Bernstein projects that AI revenue at the miners it covers will rise from $1.2 billion in 2026 to $10.7 billion by 2030, and it says planned power capacity above 27 gigawatts makes miners key suppliers to the AI industry.
6. Do miners and AI data centers want the same power?
Not in the same way. Bitcoin miners can switch their machines off to relieve strain on an electricity grid, while AI data centers need round-the-clock power. Shanon Squires of Compass Mining made the point in comments in March 2025: miners are interruptible, and data centers need close to 100% uptime.
That difference matters for Heatbit's argument. A device that heats water and mines at the same time can adapt to household demand, and it runs only when the tank needs warmth. It also means the miner is a flexible load, one that can pause without losing anything of value, unlike a facility that has promised uninterrupted computing to a corporate customer.
7. How does heat reuse change the economics of mining?
Electricity is the largest running cost for bitcoin miners, which is why industrial operators chase cheap power and why many machines are installed near hydroelectric dams, gas fields or wind farms. A household that reuses the heat from its miner changes that calculation, because the same kilowatt-hour does two jobs. The cost of heating water is a cost the household would bear anyway, so the mining revenue is, in principle, a bonus on top of it.
The logic has limits. Heat is only useful when it is needed, and a tank that is already hot has no use for more. Bitwater runs the chips at a low power level for long periods to match what a tank requires, and it relies on the existing upper element for peaks. The mining output therefore depends on how much hot water a family uses, which varies by season, household size and habits.
Efficiency also matters. A single 34 TH/s device contributes only a tiny fraction of the network's total hashrate, however efficient its chips are. Mining at that scale is closer to a household appliance that collects small, steady amounts than to a business, and the solo option means that rewards can arrive rarely, while a pool smooths payouts into smaller and more regular amounts.
8. What is Heatbit's track record and what comes next?
Heatbit's first product was a space heater with a built-in miner, priced at almost $700 in 2023. Founder Alex Busarov told the press at the time that the device would always earn something, since its heat replaces that of a conventional heater. He compared it with Dyson's appliances, saying that a Dyson does not make its owner any money but that this one does.
For Bitwater, the company says it tested the element through winter with households of four and five people in New York and Florida. Preorders for what it calls the Genesis batch, its first production run, are refundable, and delivery is planned for the first quarter of 2027. Heatbit has also teased a version for homes with gas water heaters, though it has not given details.
The main questions are whether buyers will accept an $899 outlay for earnings of around a dollar a day, whether the element holds up inside a tank over years of use, and whether the production schedule is met. The company has not yet released independent test results, so those answers will come only as units reach customers in 2027.