Bitcoin heaters, compared

It's just a heater

with benefits ;)

Compare 208 bitcoin space heaters, water heaters, air filters, home and Bitaxe miners, and industrial rigs. Real prices from 32 stores, price per TH, heat output, noise, and reviews from people who own one.

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Bitcoin price—
Earnings per TH per day—
Network hashrate—
Difficulty—

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What kind of heater are you after?

Space heaters 27

Made to sit in your living room: thermostats, quiet fans, nice cases. The bitcoin is a bonus.

From $165 140 W–2,200 W

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Water heaters 13

Tank heaters, boilers, heating elements and pool or hot-tub heaters with mining chips inside. Your hot water earns sats while it heats.

From $949 600 W–22 kW

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Air filters 1

Air purifiers with a small miner inside: cleaner air at home, and a tiny shot at a whole block while they run.

From $169 25 W–25 W

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Home 20

Plug-in miners for a desk or shelf: Apollos, Braiins Minis, USB sticks and other small units that hum along quietly.

From $109 20 W–3,000 W

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Bitaxe miners 25

Open-source desk miners built on the Bitaxe design, from tiny Ultras to Hex boards. Cheap, tinkerable and a lottery ticket for a whole block.

From $61 11 W–295 W

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Industrial 122

The big boxes. Loud, power-hungry and efficient. Great heat for a workshop, garage or greenhouse.

From $357 1,350 W–14 kW

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Right now

Top picks, by the numbers

Worked out from the database, not paid placements. Prices change, so these do too.

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Most efficient for home 9 J/TH

Zyber Blanc

Bitaxe miner

Hashrate
2.54 TH/s
Power
23 W
Efficiency
9 J/TH
Noise
—
from $258 $102 per TH

Most heat from a home unit 5,500 W

RY3T ONE

Water heater

Hashrate
190 TH/s
Power
5,500 W
Efficiency
29 J/TH
Noise
40 dB
from $17,980 $95 per TH

Cheapest way to start

Bitaxe Gamma 601

Bitaxe miner

Hashrate
1.2 TH/s
Power
20 W
Efficiency
16.7 J/TH
Noise
40 dB
from $61 $51 per TH

Charts

Price per TH vs efficiency

Lower and further left is better: cheaper hashrate that wastes less power. Light grey marks aren't on sale right now. Hover a dot for the device, or open the charts to change the axes.

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How it works

A heater with a side hustle

  1. 1

    Every watt becomes heat

    A bitcoin miner turns all the electricity it uses into heat, exactly like an ordinary electric heater. 1,000 W is 3,412 BTU/h either way.

  2. 2

    It does sums while it warms

    While it heats, its chips race to secure the bitcoin network. Join a pool for a steady trickle of sats, or mine solo and play the block lottery.

  3. 3

    The sats chip in on the bill

    Mining income is a discount on your electricity. It rarely covers all of it, and a heat pump is still cheaper per kWh of heat. Where you'd use an electric heater anyway, it's a no-brainer.

Honest numbers

What a kWh of heat really costs

Using today's network figures and a typical electricity price of — per kWh. The bitcoin heater here is the 21energy Ofen 3 Pro.

Use my own numbers
Plain electric heater—
Bitcoin heater, after sats—
Heat pump (2.8× efficient)—

Cost per kWh of heat. Mining income is a pool's average payout before fees.

Fresh out of the box

Newest arrivals

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Questions

Is it really just a heater?

Mostly, yes. Here are the questions people ask first.

Is a bitcoin heater as warm as a normal heater?

Yes. Heat output depends only on power: a 400 W bitcoin heater gives the same heat as a 400 W fan heater. Where the warm air goes matters, so put it in the room you want warm.

How loud are they?

Home heaters are usually 30–45 dB, about as loud as a quiet library. Industrial miners run at 70–80 dB, like a vacuum cleaner that never stops. Device pages show the maker's noise figure where there is one.

Will it pay for itself?

The bitcoin it earns can pay back its price, often within a few years if it runs all day, every day: the device table shows how long. Over a heating season it takes far longer, and at household prices mining rarely covers the electricity as well, so think of it as a heater that gives some money back. The heat calculator shows your net cost with today's figures and your electricity price.

Do I need to know about bitcoin?

Not much. Most home heaters have an app or a setup page: you pick a mining pool and paste in a bitcoin address. Device pages link to the maker's instructions.

Where do the prices and reviews come from?

We take prices from each store's own listing and note the date. Trustpilot scores are for the store. Device reviews come from Nostr, posted by people who sign in with their own keys. More on how we compare.