Pencil drawing of the Hammer Miner BC08 Hydro

Home miner Lottery miner Desktop In production

Hammer Miner BC08 Hydro

An eight-chip BM1370 miner with a closed-loop water cooler and a 5-inch touchscreen. It is rated 12 TH/s at up to 210 W (9.6 TH/s at 155 W in Normal mode) and about 38 dB, and runs from an included 12 V 20 A adapter.

Best price $519

$43.25 per TH · New · In stock at Altair Technology

Reviews from Nostr ↓

Hashrate12 TH/s worst 250 GH/sbest 1.16 PH/s 153rd best of 197 (the bar uses a log scale)
Power (stock)210 W lowest 11 Whighest 22 kW 162nd highest of 199 (the bar uses a log scale)
Efficiency17.5 J/TH worst 100 J/THbest 8.9 J/TH 92nd best of 195
Earns per kWh$0.087 worst $0.010best $0.171 91st best of 195
Heat output717 BTU/h worst 38 BTU/hbest 75,067 BTU/h 162nd best of 199 (the bar uses a log scale)
Noise38–46 dB worst 76 dBbest 25 dB 37th best of 68
Price per TH$43.25 worst $539.96best $1.82 119th best of 156 (the bar uses a log scale)

Where to buy

Store Trustpilot Condition Availability Listed price In your currency Per TH Checked Link
Altair Technology Ships from United States TrustScore 4.7 out of 5, 623 reviews New In stock $519 $519 $43.25 12 Nov 2026 Visit
Bitcoin Merch Ships from United States TrustScore 4.4 out of 5, 1,082 reviews New In stock $700 $700 $58.33 4 Nov 2026 Visit

Prices as listed on each store's page on the date shown, without shipping. Prices marked excl. tax leave out VAT or sales tax, and others may too. Per TH uses the hashrate of the unit each store sells. Converted at ECB rates of 11 Nov 2026. Trustpilot scores are for the store, not the device. Each store's name opens its page, with everything it sells and its reviews.

Heat, running cost and sats

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

BrandHammer Miner
ModelBC08 Hydro
SKUHM-BC08 (Bitcoin Merch)
TypeLottery miner · Home
Form factorDesktop
CoolingWater (hydro)
Production statusIn production
Launch date—
Hashrate12 TH/s
Power consumption (stock)210 W
Mining efficiency17.5 J/TH
ASIC chipBitmain BM1370 × 8 (named by the device's maker)
Heat output717 BTU/h
Input voltage12 V DC (12 V 20 A adapter, 100–240 V AC)
Frequency—
Net dimensions (W × D × H)200 × 150 × 123 mm (7.9 × 5.9 × 4.8 in)
Net weight1.5 kg (3.3 lb)
Noise38–46 dB
Operating temperature0–35 °C (32–95 °F)
Area heatedAbout 1.4–4.2 m² (our estimate)
Colours—
Company based in—
Made in—

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

Heat modes

ModeHashratePowerHeat
Normal9.6 TH/s155 W529 BTU/h
Overclock12 TH/s210 W717 BTU/h

Features

  • Eight Bitmain BM1370 ASICs
  • Liquid (hydro) cooling
  • 5-inch touchscreen display
  • Wi-Fi and Ethernet
  • Solo, PPLNS and PPS mining
  • 12 V 20 A (240 W) adapter included
  • Vendor firmware (aftermarket firmware not allowed)

Reviews

Reviews are posted on Nostr, so they belong to the people who wrote them, not to us. Sign in with a Nostr extension or signer app to add yours.

  1. Loading reviews from Nostr relays…

Similar home miners

Sources and data notes

Not yet confirmed from the maker's own documents: launch date; where the company is based; where it's made.

Spotted a mistake? Let us know.