How does a Bitcoin heater work?
A Bitcoin heater combines the functions of a space heater with those of a Bitcoin mining system. The waste heat generated during mining is used to heat rooms. This allows you to save on heating costs while earning Bitcoin.
If you want to heat with Bitcoin, you can find the currently available devices here.
-> Buy Bitcoin Heater
Types of Bitcoin heaters
1. Air heaters
These devices use the waste heat from mining hardware to heat the air. They are particularly suitable for residential spaces and offer easy integration.
2. Water heaters
Here, the waste heat is used to heat water, which is then used for heating systems or hot water. Ideal for households with existing water heating systems.
3. Industrial systems
Large-scale systems used in industry or district heating networks. They utilize waste heat from data centers or large mining farms.
Advantages and disadvantages of heating with Bitcoin
The use of Bitcoin heating offers both ecological and economic benefits, but also brings with it some challenges.
Advantages:
- Sustainable heat recovery: By using the waste heat from high-performance computers during Bitcoin mining, up to 3 tons of CO₂ can be saved per year, which underlines the environmental friendliness of the device.
- Cost efficiency: Users benefit from savings of 4 cents per kWh through lower electricity tariffs and receive additional revenue from Bitcoin mining, which further reduces heating costs.
- Easy integration: Devices like the Bitcoin Oven from 21energy are CE-compliant, meet the highest safety standards, and can be quickly integrated into existing heating solutions via plug & play.
- Modularity and flexibility: The systems are adaptable to different requirements, scalable, and feature a control app for comprehensive monitoring and optimization of energy consumption.
Disadvantages:
- High initial investment: The initial purchase costs for appliances like the "Ofen Pro" may seem high, which can result in a longer payback period.
- Dependence on the Bitcoin market: Profitability is heavily dependent on the current Bitcoin price. Falling prices can significantly extend the payback period.
- Technological complexity: The integration and maintenance of the systems requires a certain level of technical understanding, especially in dealing with mining hardware and software.
Overall, Bitcoin heaters offer an innovative way to reduce heating costs while contributing to environmental protection. However, before investing, individual circumstances and the current state of the Bitcoin market should be carefully considered.
Differences between private and industrial Bitcoin heaters
Private households:
- Compact devices
- Easy installation
- Low energy consumption
Industry:
- Large-scale plants
- Integration into existing energy systems
- High energy consumption and efficiency
Manufacturer of Bitcoin heaters
1. 21energy
An Austrian company that offers products like the "Ofen Pro." These devices combine efficient heating with Bitcoin mining.
2. RY3T
Offers models like the "RY3T ONE," which serves as the primary heat source for single-family homes and simultaneously mines Bitcoin.
3. Migodi
Produces the "Bitcoin Heater X2," which can heat rooms up to 40 m² and offers up to 100 TH/s mining power.
🔥 Current Bitcoin heaters at a glance
Here is an updated list of current Bitcoin heaters suitable for both residential and industrial applications:
1. 21energy – Oven Pro
- Type: Air heater
- Performance: Up to 10 TH/s hashrate
- Heating area: Up to 32 m²
- Special features: CE-compliant, whisper-quiet (35 dB), up to 3 tons of CO₂ savings per year, plug-and-play installation
2. 21energy – Edge
- Type: Industrial air heater
- Performance: Higher hashrate for industrial applications
- Special features: Scalable, modular, suitable for larger heating requirements
3. RY3T ONE
- Type: Air heater
- Performance: Integrated Bitcoin miners
- Special features: Design-oriented, plug-and-play, "try before you buy" offer for three months, CO₂ savings of approximately 2.2 tons per year
4. RY3T MINI
- Type: Air heater
- Performance: Integrated Bitcoin miners
- Special features: Design-oriented, plug-and-play, "try before you buy" offer for three months, CO₂ savings of approximately 2.2 tons per year
5. Migodi – Heater X2
- Type: Air heater
- Performance: Up to 100 TH/s hashrate, 3350 W
- Heating area: 30–40 m²
- Special features: Quiet operation, use of an Antminer S19, Ethernet interface
6. Migodi – Heater W2
- Type: Water heater
- Performance: Up to 100 TH/s hashrate, 3350 W
- Special features: Heats water with flow temperatures between 27 °C and 50 °C, suitable for integration into existing heating systems
7. Canaan – Avalon Mini 3
- Type: Compact air heater
- Performance: 37.5 TH/s hashrate
- Special features: App-controlled, quiet design, presented at CES 2025
- Type: Air heater
- Power: 1674 W
- Special features: Compact design, ideal for the desk or small spaces
8. Heatbit
- Type: Air heater
- Performance: Integrated Bitcoin mining function
- Special features: Modern design, quiet operation, easy integration into living spaces
Calculation example: Savings through a Bitcoin heating system
Assume a household uses a Bitcoin heater with an output of 3,350 watts. At an electricity price of €0.12/kWh, the monthly costs are as follows:
-
Electricity costs: 3,350 W * 24 h * 30 days = 2,412 kWh → 2,412 kWh * 0.12 € = 289.44 €
If mining generates €150 worth of Bitcoin per month, the effective heating costs are reduced to €139.44. Additionally, the generated heat is used for heating, resulting in further savings.
District heating and heat recovery: Example Finland
In Finland, waste heat from Bitcoin mining farms is used to feed district heating networks. Projects like Munich International Mining's demonstrate how entire cities can be heated using waste heat from data centers.
Our conclusion
Integrating Bitcoin mining into heating systems offers an innovative way to reduce heating costs while earning cryptocurrency. Whether for private households or industrial applications, the technology offers a wide range of applications and contributes to efficient energy use.
