Antminer S21 Immersion

Original price was: 1999,00 $.Current price is: 1699,00 $.

The Antminer S21 Immersion from Bitmain has a hashrate of 215Th and a power consumption of 3440W mining Bitcoin (BTC).

Description

Advanced Immersion Cooling with Antminer S21 Immersion
The Antminer S21 Immersion, launched by Bitmain in late 2024, is a state-of-the-art Bitcoin miner employing immersion cooling technology. This miner achieves a high hashrate of 215 to 301 TH/s, with power consumption varying between 3440 watts and 5569 watts. Its immersion cooling system submerges the hardware in a dielectric liquid, which drastically enhances heat dissipation and reduces the risk of overheating. This technology also allows the miner to operate more quietly despite maintaining powerful cooling, as it replaces noisy fans with liquid cooling efficiency while keeping the noise near 50 to 76 decibels depending on the model version.

Compact Size and Robust Design
Measuring 293 x 236 x 364 mm and weighing roughly 17.15 kilograms, the Antminer S21 Immersion fits neatly into both industrial mining farms and smaller, more space-conscious setups. The device supports a stable input voltage of 380 to 415 volts in a three-phase power configuration, ensuring consistent operation. It tolerates temperatures from 30 to 55°C and humidity ranging from 10% to 90%, making it suitable for various environmental conditions. Bitmain provides a 365-day warranty on the unit, reflecting confidence in its durable build and quality manufacturing. Its Ethernet interface ensures reliable connectivity for seamless remote monitoring and management.

Efficiency, Stability, and User Benefits
The immersion cooling in the S21 significantly boosts energy efficiency, reaching approximately 18.5 joules per terahash, which is superior to traditional air-cooled miners of similar power. This translates to lower electricity costs and longer hardware lifespan due to stabilized temperatures. Remote control software enables real-time tracking of hashrate, temperature, and power consumption, facilitating easy management even in large-scale operations. Overall, the Antminer S21 Immersion combines cutting-edge cooling technology with high computing power and robust engineering—making it an excellent choice for miners looking for sustainable, efficient, and stable Bitcoin mining in 2025.

  • 1 Year WARRANTY 
  • PSU included
Release: October 2024
Size: 293*236*364mm
Weight: 14.4kg
Noise Level: 50db
Hashrate: 215Th
Power Consumption: 3440W
Power Efficiency: 16J/T
Crypto Currency: BTC
Condition: New
Warranty: 1Year

Additional information

Weight 17 kg
Mineable Coins

BTC, BCH, BSV, NMC, PPC

Mining Pools

Kryptex, ViaBTC, NiceHash

Shipping

Express Shipping:

✅ Shipping Time: ca. 3-5 business days

✅ Full Tracking Access

✅ UPS/DHL

 

Processing Time:

✅ 1 business day for USDT/USDC transactions

✅ 2 business days for CoinPal transactions

✅ 2-4 business days for bank transfers

 

DDP Shipping (Delivery Duty Paid):

✅ all orders above 50kg

✅ USA & UAE

✅ all Solo Miners

Please keep in mind that VAT is excluded for all other orders. If you have any further questions regarding shipping options or value declaration, please contact us.

We will send you a confirmation email once your order has been shipped. It can take up to 2 business days until our shipping carrier provides you with the tracking information for the standard shipment after your order is being processed. If you order more than one product, it is possible that your order arrives in multiple shipments depending on the availability of the product and location.

For our used products, pick up is available in one of our warehouses in Czech Republic. Please contact us via email at: info@maximiners for more information.

When receiving the product, please make sure that all accessories related to the product are included in the package. In case of any damage during shipment, please keep the carton/box in order for exchange. The customer is responsible for contacting the shipping carrier in the event of a damage during the shipment.

MaxiMiners offers worldwide shipping. All duties, taxes or fees that occur are to be handled by the customer in case the order is not shipped via DDP. Therefore Maxi Miners is not liable for any duties, taxes or fees. It is the responsibility of the customer to take care of all occurring local taxes, duties or fees for each order. Maxi Miners is not liable for any costs of damage from calculating duties and taxes related to your order.

Each product warranty is handled directly through the manufacturer’s warranty process. In the event of a malfunction or defective device, the item will be sent to the manufacturer’s authorized repair center for evaluation and servicing. Please note that the warranty becomes void if any unauthorized modifications are made, including the installation or uploading of third-party firmware.

We offer express shipping via DHL/UPS to the following countries:

Austria, Australia, Belgium, Bulgaria, Canada, Croatia, Czech Republic, Denmark, Ecuador, Estonia, Finland, France, Germany, Greece, Hungary, Ireland, Italy, Lithuania, Luxembourg, Netherlands, Norway, Poland, Portugal, Romania, Russia, Saudi Arabia, Serbia, Slovakia, Slovenia, Spain, Sweden, Switzerland, Turkey, United Arab Emirates, United Kingdom, United States

 

Warranty

✅ 6-12 months (depending on model)

Every product ships with a 6-12 month manufacturer’s warranty tailored to the specific model, giving you peace of mind from day one. When a technical failure occurs, simply send the unit to the nearest authorized repair center—we create your after-sales ticket instantly. Our dedicated support team guides you through every step, ensuring fast resolution so you get back to profitable mining without delays or hassle.

Hosting

Global Hosting Solutions for Your Miners
Maxi Miners delivers flexible hosting options worldwide, perfectly tailored to your needs—start with just 1 miner and scale as you grow. Enjoy ultra-competitive electricity rates from $0.065/kWh across strategic locations optimized for power costs, climate, and latency. Whether you choose cool Nordic sites or sunny energy hubs, we provide rack space, cooling, and 24/7 monitoring. Check out our hosting options to find the perfect location for maximum profitability!

Check out Hosting Options here:

15% OFF with ViaBTC Pool (PPS+)

This offer is limited and only available for new users.

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