Snorkel Hot Tubs HashTub Pro
- Hashrate
- —
- Power
- 4,000 W
- Efficiency
- 16 J/TH
- Noise
- 30 dB
from $5,895
Water heater Floor standing In production
Constellation Heating Constellation Heater 200T
A bitcoin-mining boiler from a Quebec company: S21 ASIC miners sit in a dielectric fluid, and a titanium heat exchanger passes their heat into pool water (chlorine or salt), process water or a glycol loop. The 200T is the smallest model, giving 4 kW of heat and 200 TH/s on a 220/240 V, 50 A circuit. It is sold turnkey with the miners included, by quote only, in Canada and the continental US, and must be professionally installed.
Hashrate200 TH/s worst 250 GH/sbest 1.16 PH/s 97th best of 197 (the bar uses a log scale)
Power (stock)4,000 W lowest 11 Whighest 22 kW 82nd highest of 199 (the bar uses a log scale)
Efficiency20 J/TH worst 100 J/THbest 8.9 J/TH 121st best of 195
Earns per kWh$0.076 worst $0.010best $0.171 120th best of 195
Heat output13,649 BTU/h worst 38 BTU/hbest 75,067 BTU/h 82nd best of 199 (the bar uses a log scale)
Noise—
Price per TH—
Where to buy
No store listings yet. Know where to buy it? Tell us.
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
- —
The maker gives no hashrate for this mode, so we can't work out its mining income.
*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
| Brand | Constellation Heating |
|---|---|
| Model | Constellation Heater 200T |
| SKU | — |
| Type | Water heater · Home * |
| Form factor | Floor standing * |
| Cooling | Immersion |
| Production status | In production * |
| Launch date | — |
| Hashrate | 200 TH/s |
| Power consumption (stock) | 4,000 W * |
| Mining efficiency | 20 J/TH * |
| ASIC chip | Bitmain BM1368 (reported by an independent source) |
| Miner inside | Bitmain Antminer S21 (the maker says 'S21 ASICs included' and 'S21 miners included'; it does not give the S21 variant or the number of miners in each model; its cabinets are listed for 2 or 3 miners) |
| Heat output | 13,649 BTU/h |
| Input voltage | 220/240 V (50 A circuit, NEMA 14-50 plug) |
| Frequency | — |
| Net dimensions (W × D × H) | — |
| Net weight | — |
| Noise | — |
| Operating temperature | — |
| Hot water | About 86 L (23 US gal) an hour, from 10 to 50 °C (our estimate) |
| Colours | — |
| Company based in | Canada |
| Made in | — |
* Not confirmed by the maker's own documents yet.
Heat modes
| Mode | Hashrate | Power | Heat |
|---|---|---|---|
| Eco | — | — | — |
| Normal | — | — | — |
| Auto | — | — | — |
Features
- Turnkey: S21 ASIC miners and Liquid21 immersion fluid included
- Miners immersed in dielectric fluid, no fans
- Titanium heat exchanger for pool water (chlorine or salt), process water or a glycol loop
- 4 kW continuous, fully modulating heat
- Eco, Normal and Auto modes
- 8-inch 1024x768 capacitive touchscreen with live heater and Bitcoin blockchain data
- Ethernet or Wi-Fi (2.4 / 5 GHz)
- Constellation phone app: Bluetooth setup, remote control, safety alerts
- IP65 enclosure, over-temperature protection
- 220/240 V, 50 A circuit, NEMA 14-50 plug
- Mines on the Luxor pool (LuxOS firmware); pool fee 2.8% plus 3% Constellation fee
- Payouts weekly or monthly to your own Bitcoin address (Luxor minimum 0.001 BTC)
- Uses listed by the maker: pool heating, radiant floor heating, hotel and central water heating, maple syrup production, micro brewing
- Cabinets of 27.7 x 22.6 x 17.2 in (2 miners) or 35.8 x 22.6 x 17.2 in (3 miners)
- Professional installation and a pre-start check with Constellation required
- Built from UL-listed parts; the assembled heater is not UL or CSA certified
- 12-month limited warranty
- Larger models: 400T (8 kW, 400 TH/s) and 600T (12 kW, 600 TH/s)
Reviews
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Sources and data notes
- product page specs (200T 4 kW, 200–600 TH with S21 ASICs, turnkey with miners included, Eco/Normal/Auto, 8 in touchscreen, Ethernet/Wi-Fi, titanium heat exchanger, Liquid21 included, IP65, 220/240 V 50 A NEMA 14-50, Luxor 2.8% and Constellation 3% fees, 12-month warranty, 2- and 3-miner cabinet sizes, 'Quote on request' with no price) constellationheating.com
- homepage (Bitcoin-powered boiler, how it works, chlorine/salt pool, process water or glycol loop, fanless, S21 miners included, listed applications, founder Nicolas Drouin-Audet, product images) constellationheating.com
- profitability calculator (heat delivered equals energy used; Luxor 2.8% and Constellation 3% fees; USD or CAD) constellationheating.com
- calculator model table (200T: hashrateTH 200, powerKW 4; 400T 400/8; 600T 600/12) constellationheating.com
- terms dated 2026-09-30 (Constellation Heating Inc., Quebec; sealed oil-immersion unit for a pool or heating loop; professional install and pre-start check; UL-certified parts but assembled unit not certified; one-year warranty from delivery; Luxor pool fee 'currently 3%'; 97/3 payout split; weekly or monthly payouts, 0.001 BTC minimum) constellationheating.com
- app privacy policy (miners run LuxOS firmware on Luxor; Bluetooth setup; remote access over Tailscale; app offered in Canada and the US, not the EU or UK) constellationheating.com
- contact page (based in Québec, Canada; quotes, sizing, early adopters) constellationheating.com
- distributors page (Canada and continental US; direct or via partner; contractors install the 50 A circuit and plumb the heat exchanger; no partners named) constellationheating.com
- about page (founder Nicolas Drouin-Audet, mission) constellationheating.com
- 26 October 2023 post on Nicolas Drouin's 'Star Heater' pool prototype (two immersed S19 miners, about 210 TH/s), the forerunner onbitcoin.substack.com
- Corporations Canada federal company record: Constellation Heating inc. (also Constellation Chauffage inc.), corporation 1483013-0, incorporated 18 April 2023 under the Canada Business Corporations Act, registered office in Champlain, Quebec, director Nicolas Drouin-Audet, status Active, annual returns filed for 2024-2026 ised-isde.canada.ca
- Compass Mining podcast episode page, 29 April 2025, with founder Nicolas Drouin: chapters on pool-heating economics, S19 and S21 form factors and where Constellation's customers are; no figures www.audioscrape.com
- ASIC chip: product page: 'S21 ASICs included', 'Turnkey · miners included', '200T · 4 kW', cabinet sizes for 2 and 3 miners; no S21 variant and no miner count per model constellationheating.com
- ASIC chip: homepage: 'S21 miners included'; '200, 400 or 600 TH'; no variant (Pro, XP, Hyd, Imm) named constellationheating.com
- ASIC chip: calculator model table: 200T = 200 TH, 4 kW; no miner model, miner count or chip fields constellationheating.com
- ASIC chip: Braiins OS hardware table: 'Antminer S21' = BM1368, 3 hashboards x 108 chips (BHB68603/BHB68603P/BHB68606), bins up to 200 TH at 3650 W; 'Antminer S21 Pro' = BM1370 academy.braiins.com
- ASIC chip: D-Central S21 repair guide: BM1368, 108 chips per hashboard, 3 hashboards (BHB68603), 324 in total; comparison table: S21 Pro and S21 XP use BM1370, S21 Hyd uses BM1368 d-central.tech
Not yet confirmed from the maker's own documents: power (only a 4 kW heat output is published; the maker's calculator also uses 4 kW as the energy drawn); efficiency (not published; 4 kW / 200 TH/s is about 20 J/TH); dimensions (cabinets of 27.7 x 22.6 x 17.2 in for 2 miners and 35.8 x 22.6 x 17.2 in for 3 miners are listed, but not which model uses which, nor the axis order); weight; noise (fanless, maker says 'no noise', no figure); operating temperature; frequency; where it's made; SKU; launch date (2023 prototype; no launch date for the 200T); colours (photo shows a light grey cabinet; not stated); form factor (from the photo: a low cabinet on feet); production status (sold by quote with no delivery dates; the contact page still invites early adopters; a 2025 podcast discusses where Constellation's customers are, so earlier heaters were sold, but no outside source shows a 200T delivered); heat modes (names only; no power or hashrate per mode); features (Luxor pool fee 2.8% on the products page and calculator, 'currently 3%' in the terms); store listings (no price published, 'Quote on request' only, so no offer is listed); images (generic Constellation Heater photos, not labelled by model); category (also pitched for hotels, maple syrup and micro brewing).
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