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Bitcoin accepted at checkout  |  Ships from Laval, QC, Canada  |  Expert support since 2016

1325 Rue Bergar, Laval, QC [email protected] 1-855-753-9997 Mon-Fri: 8:30 - 18:00
Active Bitmain SHA-256

Antminer S21 Hydro

Hydro-cooled S21 variant with 335 TH/s. Quieter than air-cooled models but requires water cooling infrastructure and 240V power.

Hashrate 335 TH/s
Power 5,360 W
Efficiency 16 J/TH
Noise 50 dB
We Repair This Miner

Profitability Calculator

$71,498
Period Revenue Electricity Cost Profit
Daily $10.38 $9.00 $1.38
Monthly $311.44 $270.14 $41.29
Yearly $3,789.14 $3,286.75 $502.39

We Repair This Miner

D-Central has repaired 2,500+ miners since 2016. Hashboard repair, control board diagnostics, fan replacement, and full refurbishment.

Get a Repair Quote

Full Specifications

Model Antminer S21 Hydro
Model Number S21 Hyd
Manufacturer Bitmain
Algorithm SHA-256
Coins Mined Bitcoin (BTC)
Hashrate 335 TH/s
Power Consumption 5,360 W
Efficiency 16 J/TH
Noise Level 50 dB
Chip Model BM1368
Cooling Hydro
Voltage Range 200-240V AC
Operating Temperature 5-45°C
Dimensions 412x197x209
Weight 15.8
Interface Ethernet
BTU Output 18288.3 BTU/hr
Release Date 2024-02-01
MSRP $9,500.00
Status Active

Home Mining Assessment

53 /100
Fair
Noise 50 dB
Audible - best in a separate room
Heat Output 5,360W / 18288.3 BTU
High heat - requires ventilation or duct system
Power Draw 5,360W (5.4kW)
240V dedicated circuit required

Hydro-cooled S21 variant with 335 TH/s. Quieter than air-cooled models but requires water cooling infrastructure and 240V power.

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Frequently Asked Questions

Is the Antminer S21 Hydro profitable?

At $0.07/kWh electricity, the Antminer S21 Hydro generates approximately $1.38 in daily profit. Profitability depends on your electricity rate and Bitcoin network conditions. Use the calculator above with your actual electricity rate for personalized results.

Can I mine Bitcoin at home with the Antminer S21 Hydro?

The Antminer S21 Hydro has a home mining score of 53/100. With 50 dB noise and 5,360W power draw, it may require a dedicated space like a garage, basement, or outdoor enclosure. Consider noise insulation and proper ventilation.

Can the Antminer S21 Hydro heat my home?

The Antminer S21 Hydro outputs approximately 18288.3 BTU/hr of heat. For reference, a typical space heater produces 5,000-5,500 BTU/hr. All electrical energy consumed by the miner is converted to heat, making it 100% efficient as a heater. D-Central offers Bitcoin Space Heater builds designed specifically for home heating integration.

Does D-Central repair the Antminer S21 Hydro?

Yes, D-Central provides professional repair services for the Antminer S21 Hydro. Our technicians have repaired 2,500+ miners since 2016. Services include hashboard repair, control board diagnostics, fan replacement, and full refurbishment. Ship your miner to our Laval, Quebec facility for diagnosis and repair.

What power supply does the Antminer S21 Hydro need?

The Antminer S21 Hydro draws 5,360W of power. You need a power supply rated for at least 5,896W with appropriate voltage (200-240V AC). D-Central stocks compatible power supplies in our shop. Always use a quality PSU from a reputable manufacturer to protect your investment.