ASIC miner lifespan: how many years it lasts and what shortens it
With good care, the electronics of an ASIC miner last many years – the fans and the power supply usually wear out first, and both can be replaced. The end of mining, however, is usually decided not by the hardware but by the economics: the machine is finished when you pay more for electricity than it mines. That is why it is worth distinguishing between technical and economic lifespan.
Technical lifespan: what wears out first
| Component | Why it wears out | Solution |
|---|---|---|
| Fans | they run 24 hours a day, the bearings suffer from dust and heat | replaced in a few minutes, a cheap part |
| Power supply (PSU) | heat accelerates capacitor ageing, voltage fluctuations harm it | repair or replacement of the PSU |
| Hashboards | repeated heating and cooling fatigues the solder joints under the chips, the thermal paste dries out | service: chip replacement, re-pasting |
| Control board | humidity, power surges, corrosion | board replacement |
Lifespan is shortened most by hot and dusty air, humidity with condensation and an unstable power supply. For the Antminer S21, Bitmain specifies an ambient operating temperature of 0–45 °C and humidity of 10–90% without condensation. How to maintain the machine is described in the guide ASIC miner maintenance.
Economic lifespan: when it stops paying off
On Bitcoin today, 1 TH/s earns roughly 0,84 Kč a day. Every joule per terahash (J/TH) means a consumption of 0.024 kWh per 1 TH/s per day. From this you can calculate the break-even electricity price at which the machine just covers its costs:
| Generation | Efficiency | Consumption per 1 TH/s per day | Break-even electricity price |
|---|---|---|---|
| Antminer S19 (on the market since 2020) | 34 J/TH | 0.82 kWh | CZK 1.02/kWh |
| Antminer S19k Pro | 23 J/TH | 0.55 kWh | CZK 1.52/kWh |
| Antminer S21 | 17.5 J/TH | 0.42 kWh | CZK 2.00/kWh |
| Antminer S23 Hyd | 9.5 J/TH | 0.23 kWh | CZK 3.68/kWh |
The calculation applies as of 18 October 2026 at earnings of CZK 0.84 per 1 TH/s, gross before the pool fee. For comparison: the cheapest location of our hosting currently costs 1,13 Kč/kWh. A basic S19 therefore no longer earns even there, while the S21 still has a decent margin. The next halving in 2028 will cut earnings per 1 TH/s roughly in half, and the break-even prices with it.
How to extend lifespan
- Give the miner cool, clean air and separate the intake from the exhaust.
- Replace a fan as soon as it starts getting noisy or losing speed.
- Do not overclock to the limit – higher current and temperature speed up the ageing of the chips and the power supply (see ASIC overclocking).
- When margins narrow, switch to an eco mode or move the machine to where electricity is cheaper, for example to hosting.
Why it matters for miners
The machine has to pay for itself before its economic lifespan ends. That is why it makes sense to buy the most efficient generation possible and, with used machines, to count on a shorter horizon – more in the article New or used ASIC. New miners from our range come with a 24-month warranty.
Related terms
- Consumption and J/TH efficiency – how to calculate electricity costs.
- ASIC miner faults – what to do when a component wears out.
What next
How specific models are doing right now is shown in the ASIC miner profitability table – we recalculate it every hour based on network difficulty and the exchange rate.
Sources
Frequently asked questions
How many years does an ASIC miner last?
Is it still worth mining on an Antminer S19?
Does overclocking shorten a miner's lifespan?
What to do with an old miner that no longer earns?
This text was prepared with the help of AI. Facts, figures and procedures were checked by Yegor.
