Pencil drawing of the HeatCore HS20

Water heater Floor standing In production

HeatCore HS20

A larger water-cooled cabinet for two Whatsminer hydro miners. It turns up to about 20 kW of mining heat into hot water for heating, with a separate outdoor dry cooler to get rid of spare heat. HeatCore markets it for home heating, but it needs a three-phase 380–480 V supply, and in Germany one heats a car wash. The miners are not listed among the included parts, and it is sold by quote.

We haven't found a store price yet.

Reviews from Nostr ↓

Hashrate—
Power (stock)22 kW lowest 11 Whighest 22 kW Highest of 199 (the bar uses a log scale)
Efficiency—
Earns per kWh—
Heat output75,067 BTU/h worst 38 BTU/hbest 75,067 BTU/h Best of 199 (the bar uses a log scale)
Noise—
Price per TH—

Where to buy

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Heat, running cost and sats

Heat per day
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Electricity per day
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Mining earns per day*
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Net cost per day
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Net cost per kWh of heat
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Solo: chance of a block per year
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Earns per kWh, on 3-month averages
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Payback
—

*What a pool would pay on average at today's difficulty, block reward and bitcoin price, before pool fees. Solo miners usually earn nothing, and very rarely a whole block. A plain electric heater turns the same electricity into the same heat, so the mining income is what makes the difference.

Payback is how long the bitcoin a device earns takes to add up to its price. It leaves out electricity, which buys the heat: compare earnings per kWh with your electricity price to see whether mining alone covers it. It uses the average of the last 3 months, to 12 Nov 2026: bitcoin at $79,558, 969 EH/s on the network and 3.15 BTC a block, less a 2% pool fee, for the hours you set. It cuts the block subsidy in half at each halving, the next around Apr 2028, and otherwise assumes those carry on unchanged, which they won't. Income at today's difficulty and price is about 17% below that average. Hashrate usually rises, though miners that stop paying after a halving may switch off, which leaves more for the rest. How we work it out.

Specifications

BrandHeatCore
ModelHS20
SKU—
TypeWater heater · Home *
Form factorFloor standing
CoolingWater (hydro)
Production statusIn production
Launch date—
Hashrate—
Power consumption (stock)22 kW *
Mining efficiency—
ASIC chipNone of its own: it holds a miner you supply
Heat output75,067 BTU/h
Input voltage3-phase/N/PE 380–480 V AC (35 A max)
Frequency50/60 Hz
Net dimensions (W × D × H)600 × 900 × 950 mm (23.6 × 35.4 × 37.4 in) *
Net weight130 kg (286.6 lb) *
Noise—
Operating temperature-25–45 °C (-13–113 °F) *
Hot waterAbout 473 L (125 US gal) an hour, from 10 to 50 °C (our estimate)
Colours—
Company based inUnited States *
Made in—

* Not confirmed by the maker's own documents yet.

Features

  • Holds two Whatsminer hydro miners (M53, M63 or M65 series), not listed among the included parts
  • Smart Control System (CDU) and power distribution unit included
  • Max output temperature 80 °C (up to 75 °C after the plate heat exchanger)
  • Separate dry cooler for outdoor placement: 20 kW at 35 °C, one 500 mm fan, 52 dB(A) at 10 m
  • Built-in wheels, levelling feet and an LED status screen
  • Pipe connections: G 3/4 in (miner loop) and 1 in sanitary flanges (heating loop)
  • Thermal efficiency 95% (maker claim)
  • Built to EU electrical codes IEC 61439 and IEC 60204

Reviews

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Sources and data notes

Not yet confirmed from the maker's own documents: where the company is based (the selling company HEATCORE INC is in Texas, but import records and Caplight point to a parent company or factory in Chengdu, China); where it's made (US import records show HeatCore cooling systems shipped from Chengdu, China, but not this model by name); category (the maker says the H Series is for home heating, but the HS20 needs a three-phase 380–480 V supply, and terahash.energy installed one at a car wash); weight (the maker's table says 180 kg net and 244 kg in use, with mixed-up labels; Hashrate Index gives the boiler alone as 130 kg empty and 215 kg running); dimensions (600 x 900 x 950 mm is the boiler alone; the maker's 'without dry cooler' size of 1050 x 570 x 855 mm is the DC20 dry cooler's size in Hashrate Index); power (22 kW maximum on the maker's page; Hashrate Index gives a 20 kW rated heating capacity); hashrate (depends on the two miners fitted); efficiency (depends on the miners fitted); operating temperature (from Hashrate Index; not on the maker's page); noise (only the dry cooler is rated: 52 dB(A) at 10 m by the maker, 52–55 dB in Hashrate Index); launch date; colours.

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