ASIC cooling: air, hydro or immersion — which solution to choose in 2025?
THE cooling is one of the most critical parameters for the profitability and lifespan of a ASIC minorBy 2025, three main technologies stand out: air, hydro And immersionEach option offers its own advantages and limitations depending on the environment, budget, and performance objectives. Here is the complete Minent.fr guide to choosing the solution best suited to your installation.
1️⃣ Air cooling: the classic method
THE Antminer S19, S21 or Whatsminer M60 use the air cooling via 4 high-speed fans. This is the simplest solution to deploy, but also the noisiest.
✅ Advantages
- Immediate installation (no additional equipment required).
- Quick maintenance and low cost.
- Compatible with all Bitmain, IceRiver, Goldshell ranges…
⚠️ Disadvantages
- High noise (70–80 dB).
- Sensitivity to dust and ambient temperature.
- Reduced efficiency above 30°C ambient temperature.
Ideal for : small installations or farms with good ventilation.
2️⃣ Hydro cooling: silence and stability
THE water cooling (hydro) now equips high-end models such as the Antminer S21 Hydro (358 TH/s) Or S21 XP Hydro (473 TH/s)Water circulates through metal blocks in direct contact with the ASIC chips, dissipating heat evenly.
✅ Advantages
- Noise reduction < 50 dB.
- Stable temperatures 24/7.
- Extended lifespan of components.
- Increased energy efficiency (~15 J/TH on the best models).
⚠️ Disadvantages
- More complex installation (pumps, piping, radiator).
- Higher initial cost.
- Risk of leaks if assembly is incorrect.
Ideal for : industrial farms or residential areas requiring quiet operation.
3️⃣ Immersion cooling: the ultimate solution
There Immersion cooling This involves immersing the ASICs in a non-conductive dielectric fluid. This technique completely eliminates noise, dust, and temperature fluctuations. It is the method used by large professional mining farms.
✅ Advantages
- No noise.
- Stable temperatures (~40 °C continuously).
- Total protection against dust and moisture.
- Possibility ofoverclock secure (up to +25% hashrate).
⚠️ Disadvantages
- High initial investment (tank, fluid, pump, heat exchanger).
- Specialized maintenance.
- Significant weight (dielectric fluid = ~8 kg/L).
Ideal for : high-yield farms, long-term projects or hot environments.
📊 Overall comparison
| Technology | Noise | Efficiency | Cost | Maintenance | Complexity |
|---|---|---|---|---|---|
| Air | ★★☆☆☆ | ★★★☆☆ | ★★★★★ | ★★★★★ | ★☆☆☆☆ |
| Hydro | ★★★★☆ | ★★★★☆ | ★★★☆☆ | ★★★☆☆ | ★★★☆☆ |
| Immersion | ★★★★★ | ★★★★★ | ★★☆☆☆ | ★★☆☆☆ | ★★★★☆ |
Indicative rating (1★ = low / 5★ = excellent) — Source Minent.fr, 2025.
🏁 Which solution should I choose?
- Air Simple, economical, quick to deploy.
- Hydro : an ideal compromise between silence and performance.
- Immersion : the best for longevity and large volumes.
The choice depends on your priorities: cost, noise, space or efficiencyFor an individual miner, air is sufficient. For a professional farm, hydroponics or immersion provides a lasting advantage.
💡 Minent.fr Recommendation
- Start with a template Antminer S21+ (air) for its simplicity.
- Evolve towards the S21 Hydro to reduce noise and improve longevity.
- For immersion, check out our selection of IceRiver & Bitmain Immersion complete kits.
Minent.fr – professional ASIC cooling solutions: air, water, and immersion. Fast delivery from France, warranty and technical support included.
