How to quieten an ASIC miner at home: soundproof box and quiet miners
A typical ASIC miner runs at around 75 dB, as loud as a vacuum cleaner – it cannot be operated in a living space without modifications. At home you have two options: choose a machine built for the home with a noise level of 40–55 dB, or put a large machine in a soundproof box in a garage or cellar. Don't expect complete silence – a miner needs airflow and the heat has to go somewhere.
Summary
- Noise is measured in decibels (dB). We perceive a difference of 10 dB roughly as twice the loudness, so 75 dB is about four times louder than 55 dB.
- Quiet home miners run at 40–55 dB according to their manufacturers, some even less in night mode.
- The PC Praha soundproof box is our own product. With small “box”-type machines, we achieved 45–55 dB with soundproofing.
- The box must have an intake for cool air and an exhaust for warm air. A large ASIC produces 3–4 kW of heat.
- The only completely noise-free option at home is to have the machine run in hosting.
How loud an ASIC miner is compared with everyday sounds
| Noise level | For comparison | Typical miner |
|---|---|---|
| 30–35 dB | a whisper, a quiet bedroom at night | Avalon Mini 3 in night mode (approx. 33 dB) |
| 40 dB | a quiet library | Fluminer L2 |
| 45–50 dB | a quiet office, a fridge | VolcMiner D1 Mini, ElphaPex DG Home 1, hydro machines |
| 55 dB | a subdued conversation | Avalon Mini 3 at full power |
| 75–80 dB | a vacuum cleaner, a busy street | Antminer S21, L9, KS7 and other air-cooled machines |
Decibels don't add up in the usual way: two identical machines side by side are 3 dB louder than one. Outdoors, the noise level falls by roughly 6 dB with every doubling of distance. Indoors, sound reflects off the walls, which is why absorbing it at the source helps most.
Quiet miners for the home
If you want to mine right in your flat, the easiest option is to choose a machine designed for it. We calculate earnings as hashrate × today's earnings per unit (Bitcoin 0,84 Kč per 1 TH/s, Litecoin + Dogecoin 10,60 Kč + 1,86 Kč per 1 GH/s). The amounts apply at today's difficulty and exchange rate, as of 18 Oct 2026.
| Miner | Coin | Hashrate / power | Noise | Gross earnings per day | Consumption per day |
|---|---|---|---|---|---|
| Fluminer L2 | LTC + DOGE | 1.2 GH/s / 240 W | 40 dB | ≈ CZK 15 | 5.8 kWh |
| VolcMiner D1 Mini | LTC + DOGE | 2.2 GH/s / 506 W | 45 dB | ≈ CZK 27 | 12.1 kWh |
| ElphaPex DG Home 1 | LTC + DOGE | 2.1 GH/s / 630 W | 50 dB | ≈ CZK 26 | 15.1 kWh |
| Canaan Avalon Mini 3 | BTC | 37.5 TH/s / 800 W | 33–55 dB depending on mode | ≈ CZK 31 | 19.2 kWh |
| Canaan Avalon Q | BTC | 90 TH/s / 1,674 W | manufacturer does not state dB; has an Eco mode | ≈ CZK 76 | 40.2 kWh |
At a typical household electricity price (for example CZK 5/kWh), these machines lose money on their own. They make sense where you use the heat: the Avalon Mini 3 is also a direct heater and during the heating season replaces electric heating you would be paying for anyway. You will find a calculation including heating in our article heating with an ASIC miner, and more machines in the collection quiet miners for home mining.
The PC Praha soundproof box
You cannot quieten a large air-cooled ASIC in a flat, but you can in a garage, workshop or cellar. That is why we make our own soundproof box – designed and built in Prague. Inside are sound-insulating materials that absorb fan noise, and the box is designed so that the miner gets enough air and does not overheat.
With small “box”-type machines, our soundproofing achieved levels of 45–55 dB, a level at which the machine can be run even in an office. With large machines at 75–80 dB, the box reduces noise significantly, but it won't turn a garage into a bedroom – bear this in mind when choosing the location. We have also launched a separate website, MinerBoxes.com, for noise solutions.
We show how to prepare the box, put a miner in it and start mining in this video (in Czech):
How to place and connect the box
- Choose a non-residential space: a garage, workshop, cellar or plant room. A temperature of 10–25 °C and dry air are ideal.
- Provide an intake for cool air and an exhaust for warm air to the outside, for example via ducting to a window or through the wall. Without an exhaust, the room will overheat within hours.
- Place the box on a solid base, not on a carpet, and away from flammable materials.
- For a machine drawing 3–4 kW, provide a dedicated electrical circuit and a quality cable with a 16 A C19 connector. Leave the circuit design to an electrician.
- Put the miner in the box as shown in the video, and connect the network cable and power.
- After start-up, monitor the hash board temperatures in the miner's interface. If they rise above the factory limits, improve the air exhaust.
Other ways to reduce noise
- Underclocking: lower hashrate means less heat and slower fans. We describe how to do it and the risks in our article overclocking and underclocking ASICs.
- Water cooling: hydro machines run at around 50 dB, but need a water circuit, a pump and an outdoor cooler that has its own fans.
- Don't swap the fans for weaker ones: quieter but weaker fans will overheat the machine and may damage the hash boards.
- Hosting: 0 dB at home. The machine runs in a data centre and you just watch the earnings.
What next
- PC Praha soundproof box – soundproofing from our workshop for a garage, workshop or office.
- Mining at home – when home mining pays off in the Czech Republic and how to calculate electricity.
Sources
Frequently asked questions
How many decibels does a typical ASIC miner produce?
Which ASIC miner is the quietest?
Can I put a soundproof box in a flat?
Can I replace the fans with quieter ones?
How can I mine with no noise at all?
This text was prepared with the help of AI. Facts, figures and procedures were checked by Yegor.
