Description
The Antminer L3+ Space Heater Edition is the quietest entry point into D-Central’s dual-purpose mining-and-heating lineup. At just ~800W, this unit draws less power than a standard hair dryer while mining Scrypt (Litecoin/Dogecoin) and converting every watt into ~2,730 BTU/hr of usable heat for your home. Built by D-Central Technologies — Canada’s Bitcoin Mining Hackers since 2016 — the L3+ Space Heater takes a proven Bitmain ASIC miner, repackages it with silent fans and a custom enclosure, and delivers it ready to hash and heat right out of the box.
Why Scrypt? The Antminer L3+ mines Litecoin and Dogecoin, giving you exposure to the Scrypt algorithm alongside your SHA-256 Bitcoin miners. For home miners who already run a Bitcoin Space Heater and want to diversify their hashrate across multiple proof-of-work networks, the L3+ is a natural complement. It also serves as a standalone entry-level unit for anyone who wants dual-purpose mining at a lower power threshold than the S9-based models.
At ~800W, the L3+ sits in a power sweet spot for year-round operation. It generates enough heat to warm a small room in winter without overheating your space during shoulder seasons. The lower power draw means lower electricity costs, quieter fan operation, and a lighter load on your home’s electrical circuits. D-Central pioneered the Space Heater enclosure design in our Laval, Quebec workshop, and the L3+ edition carries that same engineering philosophy: every watt that enters the machine leaves as heat in your room, with Scrypt hashing as the productive work done along the way.
Technical Specifications
| Specification | Details |
|---|---|
| Algorithm | Scrypt (Litecoin / Dogecoin) |
| ASIC Chip | Bitmain BM1485 |
| Hashrate | ~504 MH/s |
| Power Draw | ~800W |
| Heat Output | ~2,730 BTU/hr |
| Noise Level | ~30–38 dBA (silent fans, quieter than a refrigerator) |
| Input Voltage | 210–240V AC |
| Power Connector | Standard AC power cord (included), dedicated 10A circuit recommended |
| Connectivity | Ethernet (RJ45) |
| Cooling | 2x silent fans (premium low-noise replacement) |
| Enclosure | D-Central custom Space Heater enclosure |
| Power Supply | Silent APW3 PSU (included) |
| Recommended Room Size | 100–175 sq ft |
| Operating Temperature | 0–40°C (32–104°F) |
| Operating Humidity | Below 75%, non-condensing |
| Warranty | 90 days (D-Central prioritized repair service) |
Mine Scrypt, Heat Your Home
The dual-purpose equation is simple: every electric heater converts 100% of its power into heat. An 800W ceramic heater and an 800W Antminer L3+ both produce ~2,730 BTU/hr. The difference is that the L3+ mines Litecoin and Dogecoin while it heats. Your electricity bill stays the same. Your home stays warm. And a steady trickle of Scrypt-mined coins accumulates in your wallet.
This is the fundamental insight behind D-Central’s Space Heater line: if you are spending money on electricity for heating, that energy should do productive computational work first. The heat is guaranteed by physics. The mining revenue is the value-add that transforms a pure expense into a partially-subsidized one. For a deep dive into the economics, read our 5-year cost comparison between mining heaters and traditional electric heaters.
The Quietest Space Heater in the Lineup
With only ~800W to dissipate (compared to 1,350W for the S9 or 3,250W for the S19), the L3+ Space Heater demands far less from its cooling system. D-Central replaces the stock industrial fans with premium silent replacements, bringing noise levels down to approximately 30–38 dBA — that is quieter than most refrigerators and barely audible in a room with normal ambient sound.
This makes the L3+ Space Heater Edition the ideal choice for noise-sensitive environments: bedrooms, nurseries, home offices, or apartments where thin walls mean your neighbors hear everything. Stock Antminer L3+ units run at ~70+ dBA. D-Central’s silent fan upgrade cuts that by roughly half in perceived loudness, making residential operation genuinely comfortable.
Plug-and-Play Ready
The L3+ Space Heater Edition ships fully assembled, reconditioned, and pre-tested. Inside the box is everything you need: the reconditioned Antminer L3+, silent fans, the D-Central custom enclosure, and a silent APW3 power supply. Connect your Ethernet cable, plug in the power cord, configure your Scrypt mining pool in the web interface, and you are hashing within minutes.
Every L3+ in our inventory undergoes D-Central’s full reconditioning process: disassembly, inspection, cleaning, component verification, reassembly with silent cooling, and a 24-hour stress test under load. You receive a unit that has already proven stable hashrate and thermal performance. For step-by-step setup instructions, see our Space Heater Assembly Guide.
Lower Power, Year-Round Operation
The L3+’s ~800W power draw is its strategic advantage. While higher-wattage Space Heater models deliver more heat (and more hashrate), they can overwhelm small rooms during mild weather. The L3+ outputs ~2,730 BTU/hr — enough to meaningfully warm a small room in winter and gentle enough to run comfortably into spring and fall without turning your space into a sauna.
At $0.10/kWh (Canadian average), running the L3+ 24/7 costs approximately $58/month in electricity. That is comparable to running a standard electric heater — except the L3+ is mining Scrypt coins the entire time. In summer months, you can relocate it to a basement or garage, or power it down entirely. The flexibility of a lower-wattage unit means more months per year of comfortable dual-purpose operation.
Scrypt Algorithm: Diversify Your Hashrate
While most of D-Central’s Space Heater lineup mines Bitcoin (SHA-256), the L3+ mines Scrypt — the proof-of-work algorithm securing Litecoin and Dogecoin. For home miners who already run SHA-256 hardware, the L3+ adds algorithm diversification to your setup. For newcomers, it provides exposure to a different corner of the proof-of-work ecosystem with established, liquid assets.
The BM1485 chip in the L3+ was purpose-built for Scrypt hashing. At ~504 MH/s, the L3+ contributes meaningful hashrate to Litecoin and Dogecoin pools while converting every joule of energy into warmth for your home. Whether you are a Bitcoin maximalist branching into Scrypt or a Litecoin enthusiast looking for dual-purpose hardware, the L3+ delivers.
What’s Included
- 1x Antminer L3+ — Fully reconditioned, stress-tested for 24 hours, ~504 MH/s Scrypt
- 1x D-Central Custom Space Heater Enclosure — Designed for optimized airflow and silent operation
- 2x Silent Fans — Premium low-noise replacement fans
- 1x Silent APW3 Power Supply — Noise-reduced PSU with stable power delivery
- 1x Power Cord — Standard AC power cable, ready to plug in
Note: Ethernet cable not included. A wired Ethernet connection is required (WiFi adapter sold separately).
Heat Coverage
| Metric | Value |
|---|---|
| Power Draw | ~800W |
| Heat Output | ~2,730 BTU/hr |
| Primary Heating (well-insulated) | 100–175 sq ft |
| Supplemental Heating | 175–250 sq ft |
| Equivalent Traditional Heater | 800W ceramic/oil-filled radiator |
| Best For | Small rooms, bedrooms, home offices, noise-sensitive spaces |
1 watt = 3.412 BTU/hr. Use our BTU Calculator to match your exact room dimensions and climate zone.
Compare Space Heater Editions
| Model | Algorithm | Hashrate | Power | BTU/hr | Price |
|---|---|---|---|---|---|
| S9 Space Heater | SHA-256 | ~13.5 TH/s | ~1,350W | ~4,600 | $235 |
| L3+ Space Heater (this unit) | Scrypt | ~504 MH/s | ~800W | ~2,730 | $295 |
| S17 Space Heater | SHA-256 | ~56 TH/s | ~1,500–2,200W | ~5,100–7,500 | From $530 |
| S19 Space Heater | SHA-256 | ~95 TH/s | ~3,250W | ~11,000 | $2,500 |
Need help choosing? Read our guide on the best miners for space heaters or browse the full Bitcoin Space Heater collection.
Frequently Asked Questions
Q: How much does it cost to run the L3+ Space Heater per month?
At ~800W running 24/7, monthly consumption is approximately 576 kWh. At $0.10/kWh (Canadian average), that is about $58/month. This is comparable to running an 800W electric heater for the same period — but with the added benefit of Scrypt mining revenue. Use our Mining Profitability Calculator to estimate returns at your local electricity rate.
Q: How loud is the L3+ Space Heater Edition?
With D-Central’s silent fan upgrade, the L3+ operates at approximately 30–38 dBA. That is quieter than most refrigerators (~40 dBA) and barely perceptible above normal room ambience. The lower power draw compared to SHA-256 models means less heat to dissipate, which means fans run at even lower speeds. Stock L3+ units are ~70+ dBA — D-Central’s modification cuts perceived loudness by more than half.
Q: What room size can the L3+ heat?
At ~2,730 BTU/hr, the L3+ effectively heats a 100–175 sq ft room as a primary heat source (a typical bedroom or home office). As supplemental heating alongside your central system, it can contribute meaningfully to spaces up to ~250 sq ft. Room insulation, ceiling height, and outdoor temperature all affect performance. Use our BTU Calculator for a personalized estimate.
Q: Why does this mine Litecoin/Dogecoin instead of Bitcoin?
The Antminer L3+ uses BM1485 chips designed for the Scrypt algorithm, which secures the Litecoin and Dogecoin networks. It cannot mine Bitcoin (SHA-256). For Bitcoin mining in a space heater format, see the S9 Space Heater Edition. The L3+ is popular among home miners who want algorithm diversification or who specifically want to support the Litecoin/Dogecoin networks while heating their homes.
Q: How hard is it to set up?
Very straightforward. The unit arrives fully assembled and tested. Connect an Ethernet cable to your router, plug in the power cord, access the miner’s web interface through your browser, and enter your Scrypt mining pool credentials. Total setup time is approximately 10–15 minutes. No soldering, no firmware flashing, no command-line work required. See our Assembly Guide for full instructions.
Q: What maintenance does it need?
Minimal ongoing maintenance. Blow compressed air through the unit every 3–6 months to clear accumulated dust from the heatsinks and hashboards. Keep intake and exhaust vents unobstructed. Monitor your mining pool dashboard periodically to confirm stable hashrate. The L3+ is designed for continuous 24/7 operation. If service is ever needed, D-Central provides prioritized ASIC repair for all units sold.
Q: What warranty is included?
Every L3+ Space Heater Edition includes a 90-day warranty covering hardware defects and component failures. D-Central provides prioritized repair service — your unit goes to the front of our repair queue. Security seals must remain intact for warranty validation. For issues beyond the warranty period, our ASIC Repair service covers the Antminer L3+ with model-specific diagnostic and repair expertise.
Q: What electrical circuit do I need?
The L3+ Space Heater requires a 210–240V AC circuit. At ~800W on a 240V circuit, the current draw is only ~3.3A — well within the capacity of any standard 240V outlet. Use a dedicated circuit and connect directly to a wall outlet (no extension cords or power strips). In North America, 240V outlets are commonly used for dryers, ovens, and EV chargers. Read our electrical requirements guide for complete wiring details.
Q: Can the L3+ replace my regular space heater?
For rooms up to ~175 sq ft, yes. The L3+ produces ~2,730 BTU/hr, equivalent to an 800W electric heater. In a well-insulated bedroom or home office, this is sufficient as a primary heat source during Canadian winters. For larger rooms, consider the S9 Space Heater Edition (~4,600 BTU/hr) or the S17 Space Heater Edition (~5,100–7,500 BTU/hr) for more heating capacity.
Q: How long will the L3+ last?
The Antminer L3+ has been in production since 2017 and is one of the most widely deployed Scrypt miners in existence. The BM1485 chips are proven reliable for continuous operation. With basic maintenance (dust cleaning every 3–6 months, stable power, humidity below 75%), the L3+ can run for years. D-Central’s reconditioning process and 24-hour burn-in test verify each unit’s reliability before shipping. When repairs are eventually needed, D-Central has deep L3+ repair expertise.
Why D-Central
D-Central Technologies has been building, repairing, and hacking mining hardware since 2016. We are Canada’s Bitcoin Mining Hackers — we take institutional-grade ASIC technology and engineer it into accessible, residential-friendly solutions. The Space Heater line was born in our Laval, Quebec workshop, where we refused to accept that mining heat should be wasted when Canadian winters demand heating.
Every L3+ Space Heater Edition is reconditioned, tested, and assembled by our team in Canada. When you buy from D-Central, you get hardware backed by real ASIC repair expertise, a real company with a physical address, and real support when you need it. If your miner ever needs service, our ASIC Repair team handles over 38 miner models with prioritized service for D-Central customers.
Every hash counts. Whether you are mining Scrypt, heating your home, or diversifying your proof-of-work portfolio — the L3+ Space Heater Edition puts your electricity to work. Explore our full Bitcoin Space Heater collection, calculate your heating needs with our BTU Calculator, or read our guide on choosing the best miner for your space heater setup.
Shipping, Warranty & Policy
Reconditioning: Each unit undergoes full reconditioning and a 24-hour stress test. Standard processing time is under 24 hours, but please allow up to 5 business days for testing, packing, and shipping.
Shipping: Prices exclude shipping fees, taxes, and customs charges. International buyers should verify local import regulations.
Final sale: Due to cryptocurrency market fluctuations, all sales are final. By purchasing, you agree to D-Central’s return and refund policy.
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