Buy a Bitcoin Heater – Comparison & Buying Guide 2026

What a Bitcoin heater is

A Bitcoin heater is an ASIC miner designed for quiet operation and heat output in living spaces. Physically almost all input power becomes heat — exactly like a fan heater, except Bitcoin is mined at the same time. The difference from a standard miner is noise, enclosure and power class.

The units compared

• Avalon Q: 90 TH/s at 1,674 W (18.6 J/TH) — current efficiency, suitable for living spaces
• Avalon Mini3 Heater: 37.5 TH/s at 1,200 W (32 J/TH) — smaller heat output, cheaper entry
• Classic large miner: 3 kW and 75 dB — basement, workshop or hall only

Making the economics work

The maths works when you need the heat anyway. Then you compare mining revenue against the cost of your other heating energy rather than against electricity cost outright. A 1.67 kW unit produces roughly the heat of a mid-size fan heater, and the mining revenue lowers your effective heating cost.

The key question is summer: what happens outside the heating season? Either switch off, move it to a cool room, or reduce power.

Buying a Bitcoin heater: price and delivery

The Avalon Q sells for €1,899 including VAT; the Avalon Mini3 is the smaller, cheaper option. Both are ordered directly ex works with a 10–14 day lead time — we handle import and customs, and the invoice shows German VAT.

You need a standard socket on an adequately fused circuit, Wi-Fi or LAN and a pool account. Setup usually takes under 30 minutes.

Bitcoin heater running costs per day and month

Running costs equal electricity minus mining revenue. Basis: €0.037 revenue per TH/s per day, 24-hour operation. The Avalon Q draws 1.674 kW, about 40.2 kWh a day, earning roughly €3.33. The Avalon Mini3 draws 1.2 kW (28.8 kWh) for about €1.39.

For the Avalon Q that means net heating cost of about €0.69 per day at 10 ct/kWh, €2.70 at 15 ct/kWh, €4.71 at 20 ct/kWh and €8.73 at 30 ct/kWh — roughly €21, €81, €141 and €262 per month. The Mini3 lands at about €1.49, €2.93, €4.37 and €7.25 per day.

Break-even sits near 8.3 ct/kWh for the Avalon Q and 4.8 ct/kWh for the Mini3. A 1.67 kW fan heater costs about €12.06 of heat per day at 30 ct/kWh; the Avalon Q delivers the same heat for an effective €8.73, roughly 21.7 instead of 30 ct per kWh of heat.

ASIC heater, Bitcoin furnace — and the central heating question

ASIC heater, Bitcoin furnace, crypto heater and Bitcoin mining heater all describe the same device: an ASIC miner whose waste heat is used as room heat. They differ only in noise, power class and enclosure.

The Avalon Q and Mini3 are direct air heaters: they release heat into the room like a fan heater and do not replace a water-based central heating system. Feeding a heating loop requires a water-cooled hydro miner with heat exchanger and buffer tank — technically possible, but a plumbing project rather than plug-and-play. We advise on this on request.

Bitcoin miner for home use – quiet & as a heater

A classic Bitcoin miner is unsuitable for home use: an Antminer S19j Pro draws 3068W and runs at roughly 75 dB – as loud as a vacuum cleaner, around the clock. It belongs in a basement, garage or workshop on its own circuit. If you want to mine in a living space you need a unit designed for quiet operation and usable heat – which is exactly what Bitcoin heaters are.

The Avalon Q is the quietest Bitcoin miner for home use in our range: 90 TH/s at 1674W (18.6 J/TH), ≤45 dB(A) – the level of a quiet fridge – set up via the Avalon Family app and delivering 1.674 kW of heat for a living room or office. The Avalon Mini3 Heater is the smaller option with 37,5 TH/s at 1200W for €1,349. Both run from a standard socket on an adequately fused circuit.

Bitcoin heater experience: noise, heat, consumption

What to expect from a Bitcoin heater in daily use follows from the unit's data – we deliberately quote measurable facts instead of invented testimonials. Noise: the Avalon Q is specified at ≤45 dB(A), which matches a quiet fridge: audible in a living room, not disturbing. The Mini3 is also suitable for living spaces. A normal ASIC miner sits at 70–75 dB and is not acceptable indoors.

Heat output: practically all electrical input becomes heat – 1.674 kW on the Avalon Q, 1.2 kW on the Mini3. That equals a medium or small fan heater and covers a room of roughly 20–30 m² or 12–20 m² with normal insulation; it will not heat a whole house. Consumption: the Avalon Q draws about 40.2 kWh a day, the Mini3 about 28.8 kWh – at 30 ct/kWh roughly €12.05 and €8.64 per day before mining revenue is offset.

Operation: both units are direct air heaters without a water connection, run on 230 V and connect to pool and wallet via app or web interface. In summer you switch off, move the unit to a cool room or reduce power. Statutory warranty of 24 months applies to new units; both models are ordered ex works with a 10–14 day lead time.

Safety in living spaces – children and pets

A Bitcoin heater in a living room follows the same rules as any other heater: free-standing, away from curtains and furniture, air intakes never covered. The casing gets warm but not glowing hot — still, with toddlers and pets treat it exactly like a fan heater and do not run it unattended within reach.

Units such as the Avalon Q are built for living spaces and run at ≤45 dB, roughly the level of a quiet fridge. Classic large miners at 70–75 dB belong in a basement, workshop or hall only.

What works in practice: a dedicated fused circuit, a non-flammable surface, regular dust checks on the fans and — where children play — a fixed corner that is off the play area.

Shipping, warehouse and delivery time

Stocked units ship within 2–4 business days from our warehouse in Bavaria, Germany. Because the hardware is already imported and cleared inside the EU, there is no import VAT, no customs paperwork and no waiting for air freight from Asia. Models sourced directly from the factory show their own delivery time on the product page.

We ship insured to all 27 EU member states and Switzerland. Shipping costs: Germany €19.90, EU €29.90 – both free from €1,000 order value. EU islands €49.00. Switzerland €40.00 (import duties are paid by the recipient).

Payment, invoice and warranty

You can pay by bank transfer, credit card, PayPal, Apple Pay or cryptocurrency. Every order comes with a proper invoice showing VAT. EU business customers with a valid VAT ID are invoiced at 0 % under the reverse-charge scheme, and we can switch your session to B2B mode with net prices.

New and used miners are covered by statutory warranty under EU law. Used units are tested, cleaned and shipped with a logged hashrate; the exact scope is stated on each product page.

Advice before you buy

We help you check electricity tariff, power connection, cooling, noise and realistic payback before you order — including when the honest answer is that a machine will not pay off at your kWh price. Send us your electricity cost and the planned location and we will run the numbers with you.