Air, Hydro or Immersion Cooling: Which system should you choose for your ASIC in 2025?
Cooling is now one of the most crucial factors in the performance and durability of a ASIC minorBetween the systems at air, hydro And immersionEach technology has its advantages, costs, and limitations. This article helps you understand the differences so you can make the right choice based on your installation, budget, and profitability goals.
🌬️ Air Cooling: The classic and simple solution
Air cooling is the most common system on models like the Antminer S19 And S21It relies on a forced airflow generated by several high-speed fans.
- Principle: The fans extract heat from the computing cards and expel it outside.
- Benefits : simplicity, low initial cost, easy maintenance.
- Disadvantages: high noise (~75 to 85 dB), dust accumulation, performance varies depending on ambient temperature.
✅ Ideal for small miners or farms with a good ventilation system and a dedicated room.
💧 Hydro Cooling: silence and stability
THE Hydro cooling recent models such as the Antminer S21 Hydro And S19 XP HydIt replaces fans with a water or heat transfer fluid circuit that circulates through internal cooling blocks.
- Principle: The water absorbs heat directly from the components, then releases it via a heat exchanger.
- Benefits : near-zero noise (<50 dB), improved energy efficiency, increased component lifespan.
- Disadvantages: installation cost (pump, tank, heat exchanger), maintenance requirements for the circuit.
💡 One S21 Hydro 358 TH/s consumes approximately 5360 W for an efficiency close to 15 J/TH, which is up to 10% better than an equivalent air-powered model.
✅ Ideal for professional farms, noise-sensitive environments, or high-density rooms.
🧪 Immersion Cooling: The New Standard for Industrial Farms
THE Immersion cooling is the most advanced method currently available. The ASIC is completely immersed in a bath of dielectric (non-conductive) fluid which dissipates the heat.
- Principle: The fluid absorbs the heat and transports it to a secondary cooling system (radiator or heat exchanger).
- Benefits : Total silence, uniform temperature, protection against dust and humidity, optimal performance.
- Disadvantages: High initial cost, need for a suitable tank, more technical maintenance.
💧 Models like the Antminer S21 Immersion 215 TH/s or the IceRiver KS7 Immersion demonstrate exceptional thermal gains and stability, even at maximum load.
✅ Ideal for industrial farms, hot areas or environments where noise needs to be reduced to zero.
📊 Quick comparison
| System | Noise | Efficiency | Maintenance | Initial cost | Target audience |
|---|---|---|---|---|---|
| Air | High (~80 dB) | Average (~16–24 J/TH) | Easy | Weak | Individuals / small-scale miners |
| Hydro | Faible (<50 dB) | Good (~15 days/hour) | Mean | Medium | Professional farms |
| Immersion | Very low (<40 dB) | Excellent (<14 J/TH) | Technique | Pupil | Industrial farms |
🔧 Best practices to extend the lifespan of your ASICs
- Maintain a stable temperature between 15 and 35°C.
- Clean air filters or radiators regularly.
- Monitor temperature sensors via the Bitmain interface.
- Use a quality power supply (200–240 V stabilized).
- Install surge protection devices.
🚀 Conclusion
By 2025, choosing a cooling system will be a strategic decision for any Bitcoin miner. Air cooling remains the simplest and most economical solution, but systems Hydro and above all Immersion offer clear advantages in terms of quietness, stability and efficiency.
If you operate a professional mining farm or want to prepare your infrastructure for 2026, the transition to a Liquid cooling or immersion cooling is a sustainable and high-performing investment.
Minent.fr – your French partner for professional mining equipment, cooling and optimized energy solutions.
