Description
Bitcoin Space Heater
The Bitcoin space heater combines Bitcoin mining with home heating in one device.
Your most expensive appliance may already be electric heat. The Antminer S19 Space Heater Edition is a configurable conversion whose delivered base miner, PSU, controller, firmware, fan package and tested profile determine its hashrate, wall power, heat output and acoustics. Every watt you spend on heat now mines Bitcoin. Built by hand in our Quebec workshop, this is D-Central’s flagship space heater and our best-seller since we pioneered the concept.
We start with a Bitmain Antminer S19 series (BM1398 chips), strip it down, replace stock fans with quiet 120 mm units, install custom firmware tuned for quiet, undervolted heating duty, and house everything in our custom silent enclosure. The result is a Bitcoin space-heater conversion. Input voltage and maximum continuous current are configuration-specific and must match the supplied PSU, plug, equipment markings and branch circuit. SHA-256 mining converts nearly all consumed electrical energy into heat, but room performance depends on the measured delivered profile and the building. A watt is a watt. Ours just mines Bitcoin on the way to becoming heat.
Technical Specifications
| Specification | Value |
|---|---|
| Algorithm | SHA-256 (Bitcoin) |
| ASIC Chip | Bitmain BM1398 |
| Hash Rate (stock) | Configuration-specific; see the delivered unit test sheet |
| Hash Rate (undervolted) | Configuration-specific; see the delivered unit test sheet |
| Power (stock / 240V) | Configuration-specific measured wall power; see the delivered unit test sheet |
| Power (undervolted / 120V) | Configuration-specific measured wall power; see the delivered unit test sheet and PSU input label |
| Heat Output (stock) | Calculate from the delivered measured wall-power profile |
| Heat Output (undervolted) | Calculate from the delivered measured wall-power profile |
| Voltage | Configuration-specific; use the delivered PSU and equipment markings. No family-level dual-voltage claim. |
| Firmware | Configuration-specific; exact base model, controller and authenticated firmware build are recorded for the delivered unit. |
| Cooling | Arctic P12 Max (quiet) or Noctua iPPC 3000 (near-silent) |
| Noise Level | ~45–55 dB (fan-dependent, profile-dependent) |
| Networking | Ethernet (RJ45) |
| Dimensions | 400 × 195.5 × 290 mm |
| Weight | 13.2 kg |
| Operating Temp | 0–40°C |
| Humidity | 5–95% (non-condensing) |
| Warranty | 90 days (D-Central conversion and tuning work) |
| Smart Home | Compatible with Home Assistant (thermostat integration) |
| Base Platform | Bitmain Antminer S19 series (refurbished, 24-hour soak tested) |
Electrical configuration: follow the delivered unit
This product family does not establish universal 120 V, 240 V or automatic transition capability. Before energizing a unit, verify the supplied base miner, PSU input label, maximum continuous current, plug and receptacle, breaker, conductor ampacity and applicable code. Do not connect a profile whose measured continuous current exceeds the branch-circuit design. Use a qualified electrician where required.
Hashrate, wall power and heat are delivered-profile observations, not promises inherited across the S19 family. The order record and unit test sheet must identify the exact configuration.
Silent Enclosure & Cooling
Stock Antminers are industrial machines. They sound like it. We strip the factory fans and replace them with premium residential-grade cooling: Arctic P12 Max fans for energy-efficient setups (800–1,200W) or Noctua iPPC 3000 fans for heavier workloads (1,200W+). Both options keep noise in the 45–55 dB range — comparable to a window air conditioner, not a jet engine.
Our custom enclosure is designed to eliminate heat trapping, direct airflow efficiently, and maintain a compact footprint that fits on a shelf, beside a desk, or against a wall. This is not a bare miner sitting on a milk crate. This is a purpose-built home appliance designed to live in your space.
Firmware: exact-model and controller compatibility
Firmware support is not universal across the S19 series. Use only the build authenticated for the exact base model, controller and hardware revision supplied with the unit. Record its source and checksum, follow its documented installation procedure, and keep a tested rollback or recovery path. Tuning software cannot make an incompatible PSU, connector or branch circuit safe.
Available monitoring and automation capabilities depend on that exact firmware build and configuration; they are not guaranteed by the family name.
The Physics: Why Mining Heaters Make Sense
A 1,500W electric space heater converts 1,500W of electricity into 1,500W of heat. A 1,500W Bitcoin miner converts 1,500W of electricity into 1,500W of heat and Bitcoin. The thermodynamics are identical — the first law says energy is conserved. The only difference is that one machine produces hash rate on the way to becoming heat. Your heating bill stays the same. Your sats stack up. Read the full 5-year cost comparison vs. a traditional electric heater.
In a Canadian winter — six or seven months where you need heat — this is not a novelty. It is an engineering decision. You are already spending that electricity. The question is whether you want it to do one job or two. Use our BTU calculator to size it for your room.
What’s Included
- Complete Antminer S19 Space Heater Edition (fully assembled, tested, ready to plug in)
- Custom silent enclosure with quiet fan upgrade (Arctic P12 Max or Noctua iPPC 3000)
- Power supply unit matched to the delivered configuration; supported input and current are stated on its equipment markings
- Compatible firmware build, when included, recorded for the exact base model and controller
- Power cable
- Quick-start instructions
Heat Coverage Guide
| Power Profile | BTU/hr | Room Size | Best For |
|---|---|---|---|
| Delivered low-power profile | ~5,100 BTU/hr | 150–250 sq ft | Office, bedroom, den |
| Delivered higher-power profile | ~8,190 BTU/hr | 250–400 sq ft | Large bedroom, open office, workshop |
| Delivered full-power profile | Calculate from the delivered measured wall-power profile | 400–600 sq ft | Living room, basement, garage, studio |
Coverage varies with insulation, ceiling height, and climate. Canadian winters with poor insulation may require supplemental heating for larger spaces. Use our BTU calculator for a precise estimate.
Space Heater Edition Comparison
| Model | Algorithm | Hash Rate | Power | BTU/hr | Best For |
|---|---|---|---|---|---|
| S9 Space Heater | SHA-256 | ~13.5 TH/s | ~800–1,300W | ~2,730–4,434 | Small rooms, entry-level |
| L3+ Space Heater | Scrypt | ~504 MH/s | ~800W | ~2,730 | Scrypt mining, small rooms |
| S17 Space Heater | SHA-256 | ~40 TH/s | ~1,200W | ~4,094 | Medium rooms, mid-range hash rate |
| S19 Space Heater (this unit) | SHA-256 | Configuration-specific; see unit test sheet | Configuration-specific; see unit test sheet and PSU label | Derived from measured delivered wall power | Medium-large rooms, serious mining |
| L7 Pivotal Edition | Scrypt | ~3.5 GH/s | ~1,300W | ~4,434 | Scrypt diversification, medium rooms |
All editions feature D-Central’s quiet fan conversion, custom enclosure, and custom firmware. See the full Bitcoin Space Heater lineup or read which miner makes the best space heater.
Frequently Asked Questions
How loud is the Antminer S19 Space Heater Edition?
45–55 dB depending on your power profile and fan choice. For reference, a normal conversation is about 60 dB. On the Arctic P12 Max fans at 1,200W or below, most people describe it as a steady low hum — noticeable if the room is silent, easy to ignore with any background noise. The Noctua iPPC 3000 fans handle higher wattages while staying in the same range. It is not silent, but it is far from the 75+ dB industrial roar of a stock Antminer.
Can I run this on an existing household circuit?
Only when the delivered PSU input label, plug and measured continuous current are compatible with that exact circuit. Verify voltage, receptacle, breaker, conductor ampacity, other loads and continuous-load requirements before use. The S19 family name does not establish 120 V capability. Consult a qualified electrician where required.
How much Bitcoin will this mine?
Use the hashrate measured on the delivered unit’s exact test profile together with current network conditions and pool terms. No family-level hashrate or profitability promise applies to every S19 conversion.
How much heat does it produce? Will it actually warm my room?
Heat output tracks the delivered unit’s measured wall power; approximately 3.412 BTU per hour is produced per watt consumed. Actual room response depends on the tested profile, airflow, insulation, ceiling height, climate and ventilation. Use the delivered measurement rather than a family-level rating.
Is this a new or refurbished unit?
Refurbished. We source Antminer S19 units, open them up, clean every heatsink and channel, inspect all connectors and harnesses, replace thermal paste and pads where needed, swap fans, install custom firmware, and run a full 24-hour soak test under load before it ships. Every unit must hit hash rate, thermal, and acoustic targets. You receive a machine that is clean, stable, and built for home use.
Which firmware can this configuration use?
Compatibility depends on the exact base model, controller and hardware revision. The delivered configuration should identify its authenticated firmware build and recovery procedure. Do not install a family-level image or infer compatibility from another S19 variant.
Can I integrate the delivered unit with home automation?
Only if the exact delivered firmware exposes a documented local interface and the automation preserves the unit’s electrical and thermal limits. A software command must not be used to exceed the supplied PSU, connector or branch-circuit rating.
What happens in summer when I do not need heating?
You have options. Shut it down and store it — it is just an appliance. Move it to a garage, basement, or utility space with ventilation and keep mining year-round. Reduce it to minimum power for modest hash rate with minimal heat. Or vent the exhaust outdoors. Some customers run them in workshops or outbuildings during warm months. The dual-purpose advantage is strongest during heating season, but the miner works year-round wherever you can manage the heat.
What warranty does this come with?
90-day warranty on D-Central’s conversion and tuning work. If anything goes wrong with the fan swap, enclosure, firmware configuration, or power supply modification within 90 days, we handle it with priority repairs. Keep the security seals intact. If you need ASIC repair after the warranty period, we are still here — we have repaired thousands of miners in our Quebec workshop.
How does this compare to buying a regular Antminer S19 and converting it myself?
You can absolutely DIY it — we even sell the Slim Edition and Loki Edition for builders who want different form factors. The Space Heater Edition saves you the time and risk of sourcing quiet fans, designing a proper enclosure, flashing firmware, and running a soak test. Every unit we ship has been tested for 24 hours under load. If you value your time or want a plug-and-play experience, this is it.
Why D-Central
We have been building Bitcoin space heaters since before the term was mainstream. D-Central Technologies has operated out of Montreal, Quebec since 2016 — repairing, modifying, and building mining hardware for home miners across Canada and worldwide. We are not a reseller dropping Shenzhen boxes with a logo sticker. Every Space Heater Edition is built, tested, and tuned by hand in our workshop.
When something breaks, we fix it. Our ASIC repair lab has serviced thousands of miners — we know these machines down to the solder joints. When you need advice, our support team mines Bitcoin too. This is what we do.
Every hash counts. Yours should count toward heating your home and decentralizing the Bitcoin network — not padding an industrial pool’s bottom line. Start mining. Start heating. Explore the full Space Heater lineup.
Resources & Guides
- Bitcoin Space Heaters – Dual-Purpose Mining and Heating
- Bitcoin Space Heater Assembly and Maintenance Guide
- Best Miners for Space Heaters: Complete Selection Guide
- Antminer S19 vs S21: Complete Comparison Guide
- Space Heater BTU Calculator
- Bitcoin Space Heater Electrical Requirements: Wiring and Safety



zachary564 (verified owner) –
Awesome! Thank you! Super efficient! Keeping 1150sq/ft townhouse warm. Under 30W/TH steady!
Christopher Palaniuk (verified owner) –
My unit has been hashing away for 30 hours now, and so far so good. It is even quieter than I expected, which is awesome. The heat is great and the Bitcoin it produces daily is so much more than the S9 I used to use for the same purpose. One of the legs of the 3D printed case broke off while shipping, despite being packed extremely well. I’m sure it’s not a typical occurance as ample foam and bubblewrap were used. Overall, I am thrilled to add this unit to my home and my fleet of Bitcoin miner heaters. Heat waste applications work well in cold climates such as mine.