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UNIHeatbit says $899 Bitwater retrofit mines Bitcoin while heating water
Heatbit has opened preorders for Bitwater, a $899 device that replaces a water heater's lower element with 20 mining chips. The company says first deliveries are due in the first quarter of 2027.
Why it matters: The product tests whether mining revenue can offset an everyday household cost, tying a $899 purchase to Bitcoin's price and network difficulty.
Key points
- Bitwater uses 20 Bitmain BM1370 ASIC chips, drawing up to 600 watts and hashing up to 34 TH/s.
- Heatbit estimates mining revenue of $365 to $455 a year, implying a payback of roughly two to 2.5 years before installation costs.
- Preorders opened around 22 Oct 2026, with Genesis units at $899 and later batches reaching $1,299.
Heatbit says its Bitwater retrofit can turn a household electric water heater into a Bitcoin miner. The device replaces the tank's lower heating element with 20 Bitmain BM1370 ASIC chips, which carry out Bitcoin's SHA-256 calculations and pass the resulting heat into the surrounding water. Heatbit advertises up to 34 TH/s at 600 watts, and because the system is water-cooled it needs no fans, which the company markets as silent.
Heatbit opened preorders around 22 Oct 2026, pricing the first Genesis batch at $899, with later batches reaching $1,299. Initial deliveries are scheduled for the first quarter of 2027. The company estimates mining revenue of about $1 to $1.25 a day under favourable conditions, or $365 to $455 a year, which implies a theoretical payback of roughly two to 2.5 years at $899, excluding installation.
Those figures depend on Bitcoin's price, network difficulty, operating hours and household water use.
The package includes a controller, leak sensor, installation hardware and a powered titanium anode intended to reduce corrosion, and users can track temperatures and earnings in Heatbit's app. Solo mining is the default, with mining pools supported. Heatbit, founded in 2020 by Alex Busarov, previously made mining-powered space heaters and air purifiers.
What to watch: Heatbit says the first Bitwater units are due to ship in the first quarter of 2027.
Live updates on NewsFeeds:MiningBitcoinDesk editor: Keshav Aggarwal (accountable for this page; this summary was not edited by hand)
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