How Long Do ASIC Miners Last? The 2026 Retirement Schedule
How Long Do ASIC Miners Last? The 2026 Retirement Schedule
MB
Michal Beno
Chief Executive Officer, OneMiners · 8 September 2026
An ASIC miner does not stop working on the day it stops paying. Those are two different dates, they can be years apart, and confusing them is one of the more expensive mistakes in this industry. On 8 September 2026 Bitcoin traded at $78,500 against a network that difficulty 127.45T prices at 912.3 EH/s, which puts hashprice at $38.72 per PH/s per day on block subsidy alone. Hashrate Index, which coined the hashprice metric, recorded a reading near $23.90 in the first quarter of 2026, the weakest since 2018. Every machine that survived that quarter is still running today. That is the whole lesson of this article in one sentence.
THE SHORT ANSWER
How long do ASIC miners last?
A well-maintained ASIC lasts five to seven years physically. Its economic life is shorter and is set almost entirely by the electricity rate you pay. A machine retires the day hashprice drops below its energy break-even, and that break-even is simply hashprice ÷ (24 × J/TH). At the OneMiners Nigeria rate of $0.0364/kWh, every machine in the table below still clears its power bill in September 2026 — including a 2022-era S19 XP. At home power of $0.12/kWh, most of them retired years ago.
First, the stakes: what a mistimed retirement costs
Take one Antminer S21, a 188 TH/s machine drawing 3,290 W, which is the workhorse of the 2024 generation and still extremely common in the field. At the OneMiners Nigeria rate it nets $4.41 a day after electricity, or about $1,608 across a year. Plugged into a domestic outlet at $0.12/kWh the same machine nets $-2.20 a day, roughly $-801 a year. Same silicon, same hashrate, same Bitcoin. The only variable that changed was the rate, and it moved the machine from an asset to a liability.
That is a swing of about $2,409 per machine per year on a unit that costs $1,111. Retire it too early at a good rate and you throw away years of production. Keep it too long at a bad rate and it quietly bills you every hour it is powered. Electricity is 75 to 85 per cent of the ongoing cost of running an ASIC, so the retirement question is really an electricity question wearing a hardware costume.
The one-line version
Revenue is weather. Difficulty is gravity. Electricity is the only term on the sheet you get to negotiate — and it is the term that decides when your machine retires.
Physical life is not economic life
Ask how long an ASIC lasts and you get two honest answers that sound like a contradiction.
1Physical life: five to seven years. The hashing chips themselves barely age. What ages is everything around them — fan bearings, power-supply capacitors, thermal paste, solder joints worked loose by heating and cooling thousands of times, and dust bridging contacts. In a clean, temperature-stable, professionally serviced facility, seven years is routine. In a garage it can be eighteen months.
2Economic life: however long hashprice stays above your energy break-even. This has nothing to do with the condition of the hardware. A perfectly healthy machine is economically retired the moment the Bitcoin it produces in a day is worth less than the electricity it consumed producing it.
Almost every "my miner is obsolete" story is really the second one. The machine is fine. The rate is not. This is why two owners of identical hardware, bought on the same day, can reach completely different conclusions about whether that hardware is finished — and why the owner paying four cents is usually still mining when the owner paying twelve cents has already sold.
The retirement trigger, as one formula
There is exactly one number that tells you when a machine retires, and you can work it out on a phone. A miner covers its own power when:
Energy break-even
break-even $/kWh = hashprice ÷ (24 × J/TH)
At today's hashprice of $38.72 per PH/s per day, an Antminer S23 Hydro at 9.50 J/TH breaks even at $0.1698/kWh. An S19 XP at 21.50 J/TH breaks even at $0.0750/kWh. Pay less than that number and the machine is still working for you. Pay more and it is working against you.
J/TH — joules per terahash — is the only hardware spec that matters here, and it is just wattage divided by hashrate. Everything else on a spec sheet is marketing. Note what the formula does not contain: the purchase price, the age of the machine, or the brand. Those decide whether the unit was a good buy. They have no vote on when it retires.
The 2026 retirement ladder, ranked by remaining runway
How every number on this page was produced
Bitcoin figures use a hashprice of $38.72 per PH/s per day, derived from a BTC price of $78,500 and a network hashrate of 912.3 EH/s, which is what difficulty 127.45T implies, read on 8 September 2026. That is block subsidy only. Transaction fees are excluded, and over the 144 blocks to height 966,109 fees were just 0.635% of what miners were paid, so leaving them out changes very little and keeps the revenue side conservative. Electricity is charged at the OneMiners network average of $0.0480/kWh unless a table states otherwise, with no performance or management fee, because OneMiners charges none. Machine wattage is recovered from the live catalogue rather than from a launch-day spec sheet. Payback assumes price and difficulty hold still, which they never do — treat every payback figure as a ranking tool, not a forecast.
Machine
J/TH
Break-even $/kWh
At OneMiners Nigeria $0.0364
At home power $0.12
Antminer S23 Hyd 3U 1.16 PH/s
9.50
$0.1698
Still earning
Still earning
Antminer S23 Hydro 580 TH/s
9.50
$0.1698
Still earning
Still earning
Antminer S23e Hyd 2U 865 TH/s
10.00
$0.1613
Still earning
Still earning
Antminer S23 (Air) 318 TH/s
11.00
$0.1467
Still earning
Still earning
Antminer S21 XP Hyd 473 TH/s
12.00
$0.1344
Still earning
Still earning
Antminer S21+ Hyd 395 TH/s
15.00
$0.1076
Still earning
Retired
Antminer S21 188 TH/s
17.50
$0.0922
Still earning
Retired
Antminer S19 XP 141 TH/s
21.50
$0.0750
Still earning
Retired
Antminer S19j XP 151 TH/s
21.68
$0.0744
Still earning
Retired
Break-even is the electricity rate at which the machine exactly covers its own power at a hashprice of $38.72 per PH/s per day. Ranked most to least remaining runway. Every one of these nine machines is still earning at the OneMiners Nigeria rate. Four of them are already retired on domestic power.
1. Antminer S23 Hyd 3U - the longest runway on the board
Verdict: the machine with the most road left in front of it. At 9.50 J/TH it survives down to $0.1698/kWh, which is four and a half times the OneMiners Nigeria rate. Hashprice would have to collapse by more than three quarters from today before this unit stopped covering its power in a OneMiners facility. It is also 1,160 TH/s in three rack units, which is why it is the default choice for operators buying by the megawatt rather than by the box.
₿ MINES BITCOIN (BTC)
Antminer S23 Hyd 3U 1.16 PH/s
1,160 TH/s11,020 W9.50 J/THHydro
The efficiency leader in the current catalogue and the last machine on this list that would ever be retired for economic reasons.
Verdict: the best balance of runway and entry price. Identical 9.50 J/TH efficiency to the 3U, so identical $0.1698/kWh break-even and identical retirement date, at $12,299 instead of $28,399. You give up density, not longevity. For anyone buying a handful of machines rather than a container, this is the unit that gets recommended most often, and the arithmetic is why.
₿ MINES BITCOIN (BTC)
Antminer S23 Hydro 580 TH/s
580 TH/s5,510 W9.50 J/THHydro
Nets $17.64 a day at the OneMiners Nigeria rate, with a payback of roughly 22.9 months if today's conditions held still.
3. Antminer S21 188 TH/s - the honest middle of the fleet
Verdict: still a working asset, but only on cheap power. At 17.50 J/TH the S21 breaks even at $0.0922/kWh. That is comfortable against $0.0364 and it is comfortable against the OneMiners network average of $0.0480. It is not comfortable against domestic power, where the machine has been retired for some time. At $1,111 it is also the cheapest way to own real hashrate in the catalogue, which makes it a perfectly rational purchase — provided it lands somewhere the rate is measured in low single-digit cents.
Where the older generations actually stand
The S19 family gets written off far too casually. An S19 XP at 21.50 J/TH breaks even at $0.0750/kWh — more than double the OneMiners Nigeria rate. It is a four-year-old machine that costs $410 and still generates a positive margin every day in the right facility. It has almost no cushion left if hashprice falls, and it will be the first casualty of the 2028 halving, but "thin margin" and "finished" are not synonyms. On domestic power it is finished. In Nigeria it is working.
What actually wears an ASIC out
Assume for a moment the economics are fine and ask what physically ends a miner's service life. In rough order of how often it is the culprit:
1Heat, sustained. Every 10°C of extra chip temperature roughly halves the working life of the components around it. Chips that spend their lives at 75°C outlive chips that spend their lives at 95°C by years, and nothing else on this list comes close to mattering as much.
2Thermal cycling. Repeatedly heating and cooling a board flexes the solder joints until they crack. A machine that runs steadily for a year is gentler on itself than one switched on and off daily, which is one reason uptime and longevity are the same conversation.
3Dust and airborne salt. Dust insulates heatsinks, so it raises temperature, which returns you to item one. In coastal or industrial air it also bridges contacts and corrodes them outright.
4Power-supply ageing. The PSU is the single most replaced part in the industry. Electrolytic capacitors dry out, and they dry out faster when hot. Most "the miner has failed" reports are a PSU that needs swapping, not a machine that needs scrapping.
5Unstable input power. Voltage sag, surges and dirty grid supply damage power stages quietly over months. This is the failure mode home miners never see coming and industrial sites engineer out on day one.
Why hydro and immersion units age more slowly
A liquid-cooled machine has fewer moving parts, runs at a lower and far more stable chip temperature, and is largely sealed against dust. That is why the hydro units in the catalogue — the S23 Hydro, the S23e Hyd 2U, the Sealminer A4 Ultra Hyd 886 TH/s — tend to reach the top of the five-to-seven-year band rather than the bottom. Cooling is not only an efficiency decision. It is a longevity decision.
Five levers that extend economic life
1Lower the rate. This is the only lever with unlimited travel. Moving from $0.12/kWh to $0.0364/kWh does not improve a machine by a few per cent, it reprices its entire remaining life. Everything else on this list is a rounding error next to it.
2Fix the rate for years, not months. A rate that can be revised annually is not a rate, it is an option your provider holds against you. OneMiners contracts fix electricity for seven years, which is longer than the physical life of most of the hardware it powers — the machine retires before the contract does.
3Undervolt when hashprice is thin. Efficiency curves are not linear. Giving up ten per cent of hashrate can cut fifteen to twenty per cent of power draw, which pushes the break-even rate down and buys an older machine additional quarters of useful life.
4Keep it cool and keep it clean. Filtered air, controlled inlet temperatures and scheduled cleaning are unglamorous and they are the difference between the five-year and the seven-year end of the band.
5Keep it running. Steady operation beats intermittent operation both for revenue and for solder. A 95 per cent uptime floor with compensation, which is the OneMiners service level, is a longevity feature as much as a revenue one.
Red flags that quietly shorten a miner's life
A variable or "market-linked" electricity rate. Your break-even moves against you exactly when conditions are worst.
A performance or management fee on top of power. A 15 per cent revenue share raises your effective break-even by 15 per cent and pulls every retirement date forward. OneMiners charges no performance or management fee.
No published uptime commitment. Downtime you are not compensated for is pure lost life on a depreciating asset.
Warranty shorter than the contract. If hardware cover expires in year two of a five-year plan, years three to five are your risk alone. The OneMiners warranty runs seven years.
No on-site technicians. A PSU failure fixed in two hours costs almost nothing. The same failure fixed in three weeks costs three weeks.
Ambient-air hosting in a hot climate with no cooling engineering. It is cheap for the operator and it is expensive for your hardware.
Which machine to buy for the longest runway
LONGEST ECONOMIC LIFE
Antminer S23 Hyd 3U
9.50 J/TH and a $0.1698/kWh break-even. Nothing in the catalogue retires later.
BEST RUNWAY PER DOLLAR
Antminer S23 Hydro 580
The same $0.1698/kWh break-even as the 3U at $12,299. Identical retirement date, far smaller cheque.
CHEAPEST ENTRY THAT STILL WORKS
Antminer S21 188 TH/s
$1,111 for a machine that breaks even at $0.0922/kWh. Only sensible on hosted power.
Your retirement date is a rate, not a date
Every machine above is still earning at $0.0364/kWh and most of them are finished at $0.12/kWh. OneMiners operates 20 sites and about 2,163 MW with seven-year fixed electricity, a seven-year hardware warranty, a 95%+ uptime commitment and no performance fees. Run your own numbers first, then choose the machine, then activate the hosting.
Five to seven years physically with proper cooling and maintenance. Economically, they last as long as hashprice stays above $38.72-era break-even for their efficiency class, which at $0.0364/kWh currently includes every machine in this article.
Do ASIC miners lose hashrate as they age?
Not meaningfully, no. A healthy ASIC produces close to its rated hashrate for its whole life. What you see instead is sudden step changes when a hashboard or a fan fails, and a gradual efficiency loss as dust raises operating temperature. A machine either hashes at roughly spec or it has a fault.
Is a 2022 Antminer S19 XP worth running in 2026?
At $0.0364/kWh, yes. It breaks even at $0.0750/kWh, so it still clears its power bill with margin to spare, and it costs $410. At domestic rates it is not worth plugging in. It also has the least cushion of anything in the catalogue if hashprice falls.
What is the single biggest factor in ASIC lifespan?
Temperature, for physical life. Electricity rate, for economic life. Nothing else is in the same weight class as either.
Does hydro cooling really make miners last longer?
Yes, and for unremarkable engineering reasons: lower chip temperature, far less thermal cycling, fewer bearings to fail and much less dust ingress. Liquid-cooled units cluster at the long end of the five-to-seven-year band.
When does a miner become e-waste?
Later than most people assume. A machine that no longer pays at twelve cents per kilowatt hour is often still profitable at four, so machines migrate to cheap-power regions rather than being scrapped. Genuine end of life usually arrives when a halving cuts revenue faster than the owner can find a cheaper rate.
How will the 2028 halving change these retirement dates?
It halves the subsidy from 3.125 to 1.5625 BTC, which at today's price and difficulty would take hashprice to about $19.36 per PH/s per day and halve every break-even in the table. Machines above roughly 20 J/TH move to the edge of viability even at four cents. Around 83,891 blocks remain, putting it in the second quarter of 2028.
Should I sell an older miner or keep running it?
Compare the resale price against the net margin the machine still produces at your actual rate. At four cents most older units earn more over the next year than they would fetch today. At twelve cents the calculation reverses immediately.
Does the warranty length matter for lifespan?
It matters for your exposure rather than for the hardware. A seven-year warranty, which is what OneMiners provides, means hardware risk sits with the operator for essentially the whole physical life of the machine instead of the first year or two.
Can I extend a miner's life by underclocking it?
Yes, on both counts. Undervolting lowers power draw more than it lowers hashrate, which reduces the break-even rate, and it lowers chip temperature, which extends physical life. It is the standard response to a weak hashprice environment.
Final thoughts
The honest answer to "how long do ASIC miners last" is that the hardware question is the easy half. Five to seven years, kept cool and kept clean. The half that decides your outcome is the rate on your electricity contract, because that single number sets the retirement date of every machine you own, and it is the only input in the whole calculation that you actually choose.
At $0.12/kWh, four of the nine machines in the table above are already finished. At $0.0364/kWh, none of them are. That is not a marginal difference in outcome. It is a different industry. Calculate your numbers, choose the Bitcoin miner, then activate the hosting — in that order, because the third step is the one that determines whether the first two mattered.
Data sources
Bitcoin price, $78,500 — CoinGecko and Blockchair, 8 September 2026.
Network difficulty 127.45T at block height 966,109, and the implied 912.3 EH/s — Blockchair and mempool.space, 8 September 2026.
Hashprice as a metric, and the Q1 2026 low near $23.90 per PH/s per day — Hashrate Index and Luxor Technologies.
Machine hashrate, wattage and pricing — the live OneMiners catalogue, read 8 September 2026.
Transaction fees as a share of miner revenue — measured directly over the 144 blocks to height 966,109.
DISCLAIMER
This article is published for informational and educational purposes only and is not financial, investment or tax advice. Every profitability figure is a scenario built on the market data stated above, captured on 8 September 2026. Cryptocurrency prices, network difficulty, mining rewards and hardware pricing all change constantly, and a change in any one of them changes every result on this page. Mining returns are not guaranteed and no fixed profit guarantee applies. Hardware specifications reflect the OneMiners catalogue and manufacturer documentation at the time of writing. Always run your own numbers against current market conditions and your own electricity rate before purchasing mining hardware.
Antminer S23 Hyd 3U 1.16 PH/s
Antminer S23 Hydro 580 TH/s
Antminer S23e Hyd 2U 865 TH/s
Antminer S23 (Air) 318 TH/s
Antminer S21 XP Hyd 473 TH/s
Antminer S21+ Hyd 395 TH/s
Antminer S21 188 TH/s
Antminer S19 XP 141 TH/s
Antminer S19j XP 151 TH/s
