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Mining Heater

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21energy – Bitcoin Mining Heater

Why pay for electricity and waste the heat? The Ofen 2 by 21energy is a Bitcoin miner in a heater enclosure. Every watt the miner consumes is converted 100% into heat – just like a regular electric heater, except you earn sats on the side.

Ofen 2

The Ofen 2 is a quiet mining heater in a compact case. It connects to your network via WiFi and is controlled through an app or web interface. Available as a freestanding unit with base or for wall mounting with a matching bracket.

Heating with Bitcoin Mining

In winter, you're heating anyway – the Ofen 2 makes it economical by mining Bitcoin on the side. In summer, simply reduce the power or turn it off. Running costs are identical to a regular electric heater, but you get sats back.

Frequently Asked Questions

How loud is the Ofen 2?
The Ofen 2 is significantly quieter than standard ASIC miners and designed for use in living spaces. Noise levels are comparable to a quiet fan.

Is a mining heater worth it?
If you're heating with electricity anyway, absolutely. Heating costs stay the same, but you earn sats on the side. Profitability depends on the Bitcoin price and your electricity rate.

Do I need a fan shroud for the Ofen 2?
No, the Ofen 2 is a closed system with its own enclosure. Fan shrouds are designed for open ASIC miners like Antminer or Whatsminer.

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