Antminer S21+ Hydro 395 TH/s – The most powerful water-cooled ASIC miner for Bitcoin mining and house heating
Antminer S21+ Hydro is among the most advanced ASIC miners of today. It offers top performance 395 TH / s with a consumption of only 5 925 W, which represents excellent efficiency 15 J/THIt is designed for cryptocurrency mining with the algorithm SHA-256, such as Bitcoin (BTC), Bitcoin Cash (BCH) or Bitcoin SV (BSV). Thanks to water cooling, it ensures stable operation, quiet operation and the possibility of effective use of waste heat for heating.
Performance and efficiency
Door Design Antminer S21+ Hydro 395 TH/s pushes the boundaries of energy efficiency in cryptocurrency mining. It consumes approximately 5,9 kW and is able to generate profit even at higher electricity prices. Thanks to hydrocooling, it maintains optimal temperature even during continuous operation 24/7, thereby extending the life of the device.
Water cooling – quiet and reliable operation
This miner uses a closed water circuit with a flow rate 8–10 liters per minute and operating pressure up to 3,5 bar. The coolant (distilled water or a special mixture with antifreeze) removes heat directly from the chips, eliminating the need for noisy fans. The noise level is around 50 dB, which allows installation even in residential areas, garages or technical rooms.
Heating a house using mining
Unique advantage of the model S21+ Hydro is it possible to use waste heat for home heating or water heating. Miner produces approximately 5,9 kW of thermal energy, which corresponds to the output of a smaller electric boiler.
When connected via plate-and-shell heat exchanger The heat can be transferred to a central heating system, underfloor heating or a boiler. This method of use significantly increases the economic return on the equipment - instead of just extracting, you can simultaneously reduce heating costs.
Recommended connection for heating
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Miner → pump → heat exchanger → heating circuit (radiators or underfloor heating)
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Flow rate: 8–10 l/min
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Inlet temperature: 20–50°C
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Pressure: up to 3,5 bar
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Electrical supply: 3-phase 380–415 V
For safe and long-term operation, we recommend connection by a specialist, installation of a heat exchanger and a circulation pump with temperature control.
Technical parameters
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Design: Antminer S21+ Hydro (395 TH/s)
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Algorithm: SHA-256 (Bitcoin, Bitcoin Cash, Bitcoin SV)
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Hashrate: 395 TH/s ±3%
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Consumption: 5,925W ±5%
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Efficiency: 15 J/TH
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Cooling: Water (closed circuit, 8–10 l/min)
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Noise level: ~ 50 dB
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Power supply: 3-phase 380–415 V
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Dimensions: 339 × 173 × 207 mm
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Weight: 14,5 kg
Main advantages
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Highest performance in its class (up to 395 TH/s)
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Extremely quiet operation thanks to water cooling
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Possibility of using waste heat for heating
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Significantly longer chip life
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Stable operation even under long-term load
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Energy efficiency only 15 J/TH
Summary
Antminer S21+ Hydro 395 TH/s represents the pinnacle of modern mining technology – reliable, efficient and at the same time environmentally friendly. It combines high computing power with the possibility of intelligent heat utilization, thus paving the way for profitable and sustainable Bitcoin mining. Ideal solution for investors, home miners and corporate installations with regard to energy efficiency and return.
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