What if your radiator stopped simply burning electricity… and started mining Bitcoin at the same time?
A Bitcoin miner is, at its core, just an electrical device that consumes watts and transforms them into computing power… and then into heat. All the energy it consumes ends up as heat, just like an electric heater: 1000 W consumed = 1000 W of heat released, whether it's a conventional convector heater or an ASIC.
The idea behind Bitcoin heating is simple: Since you're paying a bill to heat your home anyway, you might as well get some of it back in the form of sats.
But not all devices are created equal. Between silent mini-miners, designer radiators, "made in Europe" heaters and industrial monsters that are best hidden in a garage, the choice can quickly become confusing.
In this article, we sort through and compare 10 Bitcoin heaters that you can realistically consider for your home, from the most discreet to the most powerful, with the following information for each:
- power and consumption (W)
- hashrate (TH/s)
- sound level (dB)
- price
Note: the order presented does not rank the products from worst to best, but from least powerful to most efficient in terms of Th/s.
What exactly is Bitcoin heating?
Bitcoin heating is not an official technical category, but a logic of use:
- you are using a Bitcoin miner as a heat source;
- the heat produced is used to heat a room or a dwelling;
- In parallel, the device validates blocks and pays you sats.
In a typical mining operation, this heat is considered waste that is ventilated as quickly as possible. In an apartment or house, it's the opposite: the heat becomes a useful resource.
We are not talking about "making heat with mining", but about replacing (or supplementing) a radiator with a heating appliance. ET Bitcoin mine.
Common confusions to avoid: home mining, lottery mining, heating…
Before diving into the comparison, we need to avoid some misconceptions.
👉 Confusion between heating and solo mining
Firstly, heating bitcoin is not necessarily solo mining. As its name suggests, solo mining (or home mining) is simply mining at home, with a home ASIC or a small rig.
Some home miners consume 20 to 200 W: they heat the air around them a little, but they are not heaters in the sense of “I am replacing a 1000 W radiator”.
Devices such as Bitaxe-type mini-miners/Nerdminer are conceived as “lottery tickets”:
- very low hashrate
- ridiculous power (10 to 40 W)
- Objective: to learn, to support the network, to dream of finding a solo boulder problem
It doesn't provide heat in absolute terms: interesting for teaching purposes, not for replacing a heating system.
👉 Confusion with professional miners
At the other extreme, we have industrial ASICs like the Antminer S19 or Fluminer T3:
- several kilowatts of power (1,700 to 3,250 W)
- loud noise (50–75 dB and above)
- need for a dedicated electrical installation or risk of overheating of the electrical network.
They can perfectly heat a large room, or even a small building, but they are difficult to live with in a living room without special arrangements (technical room, garage, soundproof box, etc.).
👉 The “real” Bitcoin heaters designed for the home
Between the two, a new generation of devices has appeared:
- Le Ofen 2 of 21 EnergyHeatbit Trio, BitChimneyetc. (We will discuss this specifically in this article)
- radiator or furniture design
- Noise management, security, sometimes a mobile app
- They clearly acknowledge their positioning: “heater + Bitcoin miner”
It is primarily this category that will interest a user looking for a miner's radiator.
What should you consider before choosing your Bitcoin heating system?
• The hashrate (TH/s) : the higher it is, the more the device mines but this often implies more heat, noise and technical constraints.
• Power and electricity consumption : an 800–1000 W model heats well (approximately 50m2), but check that your installation can support the load and that the energy cost remains profitable.
• The purchase price Compare the initial cost with the actual performance; some models are attractive but not very productive, others more expensive but much more efficient.
• The noise level and integration into your space : some devices are almost silent, others require ventilation or dedicated placement.
• The software ecosystem and support Management interface, pool compatibility, updates, delivery, firmware: these are what separate a gadget from a tool that you truly master.
The 10 Bitcoin heaters you can have at home (from the most discreet to the most powerful)
Now that the confusion and conflation have been cleared up, we can begin the comparison.
1. Brains Mini Miner BMM-101: the lottery ticket that heats a mug
Le Brains Mini Miner BMM-101 This is a mini ASIC designed for lottery mining and learning. It is powered via USB and sits on a desktop.
Key Features:
- Hashrat to ~1 TH/s
- Consumption : 40 W
- Sound level : ~40 dB (“silent operation”)
- RRP $299 (approximately €280–320) at the Brains store
In practical terms, it gets about as hot as a small computer charger. However, the BMM-101 won't replace a radiator, but:
- It can slightly warm up a corner of an office.
- while allowing you to familiarize yourself with mining and pools.
👉 Recommended use Educational mining, Bitcoin decoration, home node support. Not a primary heating source.
2. Bitaxe Gamma 601: the ultra-sober mini open-source
Le Bitaxe Gamma 601 is a small open-source miner, based on a modern chip (BM1370) and designed to be very efficient (few watts per TH/s).
Key features of the Bitaxe :
- Hashrat to : up to ~1,2–1,3 TH/s
- Consumption ~17 W, or approximately 15 W/TH
- Sound level ~35 dB (quiet fan)
- RRP ~€199 in Europe (depending on retailer)
Again, this is more of an educational/geek device than a heater. 17W is fine for heating a keyboard, not a living room.
👉 Recommended use This is for people who like DIY devices, hackers, and those who want a small, discreet open-source miner. Let's just say the heating element is symbolic here.
3. FutureBit Apollo BTC: the hybrid miner + node version
Le FutureBit Apollo BTC is a hybrid device (miner + Bitcoin node + desktop machine) but its mining capacity is low, which places it in the home mining category.
Key Features:
- Hashrat to ~3,8 TH/s
- Consumption ~200 W
- Sound level ~25 dB in eco mode (very quiet)
- RRP :
- ~$699 on the official US website
- ~€349–499 depending on European shops and configurations (with SSD, PSU, etc.)
👉 Recommended use This is ideal for someone who wants to run their own node at home, validate their transactions and contribute to the decentralization of the network.
4. Canaan Avalon Nano 3 S: The small 140W radiator
Le Canaan Avalon Nano 3S It's marketed as a hybrid device: mining + home heating. This is closer to the type of Bitcoin mining radiator used for personal purposes.
Key features (preliminary data):
- Estimated hashrate ~6 TH/s
- Estimated consumption ~140 W
- Efficiency ~23,3 W/TH (estimate)
- Sound level : not officially communicated; Sazmining compares it to Bitaxe type devices (~35 dB), so rather discreet.
- RRP : generally a few hundred euros/dollars (range ~250–400 € depending on lot and seller).
With 140W, the Nano 3S delivers heat comparable to a small space heater. This is suitable for a small space or an office, provided you can tolerate a slight breeze.
👉 Recommended use : user who wants to test the concept of “I heat my office by mining” without switching to large equipment.
5.🔥 Canaan Avalon Mini 3 — Compact domestic “miner heater”
Le Avalon Mini 3 This device combines Bitcoin mining and supplemental heating, with a design intended for home use: living room, office, small room. It offers a good compromise between mining power, moderate energy consumption, and ease of installation.
It's one of the best Bitcoin-based heaters in terms of value for money.
Key Features:
- Hashrate: ≈ 37,5 TH/s
- Energy consumption / heating power: ≈ 800 W
- Energy efficiency: ~ 21,3 J/TH
- Noise: ~ 33–55 dB depending on the mode/fan
- Dimensions/weight: ~ 760 × 104 × 214 mm, ~ 8,3 kg
- Price: $1000
👍 What he brings home:
- A good balance of “mining + heating”: enough heat for a small room or as a supplement, while still mining seriously.
- More discreet and easier to integrate than a large ASIC, less noisy, more compact, compatible with standard plug.
- Moderate power consumption (800 W), more affordable than a “large format” miner, making it more reasonable for home use.
👉 Recommended use: For a user who wants to try Bitcoin mining at home, without expensive equipment, while enjoying a little warmth — ideal for an office, small apartment, or spare room. A good “first miner + supplemental heater”.
6. 🔥The Ofen 2 from 21 Energy: Bitcoin heating “made in Europe”, 1000 W / up to 40 TH/s
Le Ofen 2 from 21energy, Made in Austria, it is one of the few Bitcoin heaters designed from the outset for the European market: understated design, steel case, BraiinsOS+, adapted documentation and support.
Key Features:
- Hashrat to : up to 35–40 TH/s depending on the settings
- Energy consumption / heating power : 1W
- Advertised heated area : up to 50 m² (depending on insulation)
- Sound level ~32 dB continuous, with advertised levels of 35–45 dB depending on the power
- RRP €1,650 including VAT (promotion in effect at the time of writing) with a 5% discount using the code "zonebitcoin".
With 1 kW, it's a true main radiator for a large room or a small, well-insulated apartment. The Ofen 2 also has the advantage of being designed as a piece of furniture/radiator, not as a "disguised ASIC".
👉 Recommended use A European user who wants to replace an electric radiator with a device that provides the same heat output, silently, while also being energy efficient. Someone looking for radiators that blend seamlessly into their décor.
7. Heatbit Trio: The 1500W designer heater for the living room (USA)
Le Heatbit Trio is probably one of the most “mainstream” Bitcoin heaters: sophisticated design, role of radiator + air purifier + miner, with an app and communication very lifestyle-oriented.
The only downside is that the product is not available on the European market.
Key Features:
- Hashrat to : 10 TH/s
- Mining power 400W dedicated to mining
- Total heating power : 1500 W (including 1100 W of conventional heating element)
- Sound level ~40 dB (soft conversation level / quiet office)
- RRP $999–$1,199 depending on the version and promotions
In terms of heating power, 1500 W, it is a real electric radiator capable of heating a living room or a large living space (depending on insulation).
👉 Recommended use Ideal for a family or couple living in an apartment who wants a stylish, plug-and-play radiator without feeling like they have an ASIC in their living room. Aesthetically, it's also a very attractive product, it must be said.
8. Hotmine CM-1 Smart Heater: the discreet wall-mounted radiator (10 Th/s)
Le Hotmine CM-1 Smart Heater resembles a simple wall-mounted electric radiator (quite similar in design to 21 Energy), but it hides Bitfury ASICs inside. The company states that it is silent and blends well into a classic decor.
The company has been working on mining software since 2013 and is based in Ukraine. It primarily targets the Russian market. Currently, the website is not widely known in Europe, and we were unable to obtain detailed feedback or reviews.
Key Features:
- Hashrat to : 9–11 TH/s
- Consumption : 500-900W
- Sound level Passive, fanless → presented as “absolutely silent”
- RRP $1,000 on the official Hotmine store.
👉 Recommended use : user who wants a classic radiator + Bitcoin deep inside, without noise or “crypto look”.
9. BitChimney (normal): the heater 750 W / 40 TH/s
Le BitChimney is a type of stove/heating column incorporating an ASIC (often based on S19/S21 type platforms), with a more original design, in red color which may appeal to its audience.
Key features (normal mode):
- Hashrat to : 40 TH/s
- Consumption : 750 W
- Efficiency : 18,75 W/TH
- Sound level ~49 dB (equivalent to a quiet office or light rain)
- RRP Depending on the version (S19k Pro, S21, etc.), between ~900 and $1,400
750 W is already serious: this is a high-performance auxiliary radiator for a living room / main room.
💡 Note: the BitChimney High reaches 1000 W / 53 TH/s at 56 dB, therefore more heat and more noise
👉 Recommended use : someone who wants a dedicated Bitcoin heater in a specific room, with a noise level that is still acceptable.
10. Canaan Avalon Q 90T
Le Avalon Q Home The Canaan is one of the most efficient devices in the home-mining segment: a compact unit, designed for home use, but with a hashrate worthy of a true ASIC.
Key Features:
- Hashrat to ~90 TH/s
- Energy consumption / heating power ~1600–1700 W
- Modes of use : eco / normal / performance (adjustable power and noise)
- Sound level : 45–65 dB depending on the mode
- Efficiency ~18,6 J/TH
- RRP ~€1,900–€2,000 depending on the dealer
With 1,7 kW, it's no longer just a simple auxiliary heater — the Q Home heats up strongly, while mining much more than a typical “Bitcoin heater”.
Its advantage?
A great compromise between power and home size, configurable, usable in a living room, office or dedicated room without looking like a farm ASIC.
👉 Recommended use :
User who wants to mine seriously from home while recovering heat... someone who prioritizes mining performance over thermal comfort and wants an adjustable, compact and "acceptable" device for a home.
11. Fluminer T3 — 1700 W / 115 TH/s: the heater for garages or large rooms
We're adding one last one, which will be available soon. Now we're taking things up a notch with the Fluminer T3 is a very recent SHA-256 ASIC, designed as a high-performance miner… which is positioned as a heating solution for those with high heat requirements.
Key Features:
- Hashrat to : 115 TH/s
- Consumption : 1W
- Efficiency : 14,78 W/TH (very good for a large ASIC)
- Sound level : 50–55 dB
- RRP $1,700–$2,000 depending on the shop
1700 W is almost the equivalent of a small industrial fan heater. Enough to heat:
- a large living room,
- one floor,
- or a well-insulated garage/basement type space.
On the other hand, the noise and consumption make it unsuitable for a small apartment without a dedicated room.
👉 Recommended use : house with technical room, cellar or garage, to convert a large part of the electricity bill into heat + sats.
12. Antminer S19 (95 TH/s): the industrial option that some transform into a “radiator”
Le Bitmain Antminer S19 (95 TH/s) This is a classic feature of mining farms. It's not a heater designed for home use, but some people use it as a heat source in a suitable environment. Getting involved in this type of activity requires some basic technical knowledge and skills.
Similarly, given the consumption level, it is preferable to have a more affordable energy source.
Key Features:
- Hashrat to : 95 TH/s
- Consumption : 3W
- Efficiency : 34,21 W/TH
- Sound level ~75 dB (four high-speed fans)
- RRP : around €1,000–€1,500 on the current market (new/refurbished in Europe)
3,25 kW is enormous:
- Massive heat, capable of heating a large volume,
- But at the cost of a constant whirring noise. You get the feeling you have a miner, not a radiator.
Many users transform it into a pseudo-radiator via:
- soundproof boxes,
- watercooling,
- or integration into water/pool heating systems.
👉 Recommended use Advanced project, house with solid electrical installation + dedicated room. We're no longer in the "I'll just put a nice radiator in the living room" phase.
Final word on heating bitcoin at home
Used intelligently as a complement to a solid asset portfolio,
With attention paid to cost, maintenance, noise level and performance, Bitcoin heating becomes much more than a technological gadget.
It stands out as a concrete tool for regaining control:
• on your energy consumption,
• regarding your thermal comfort,
• and on your ability to consider energy as a true economic asset.
However, it is certainly a young, imperfect, but promising field where innovation is progressing rapidly, driven by the growing interest in energy autonomy, digital sovereignty and the valorization of waste heat.
As always with Bitcoin, we are getting a glimpse of the future of energy consumption, most certainly…
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