Antminer S9j
Latest S9 variant with slightly higher hashrate. Same compact form factor. Popular in D-Central space heater builds.
DCENT_OS Compatible
DCENT_OS is custom firmware developed by D-Central Technologies specifically for home miners. It transforms this miner with whisper-quiet fan profiles, 120V North American outlet support, auto-tuning for maximum efficiency, heater mode integration, and a clean web dashboard for monitoring.
Miners running DCENT_OS score higher on our Home Mining Assessment because the firmware is purpose-built to make industrial hardware livable in residential spaces.
Learn More About DCENT_OS →Professional-Grade Miner
This miner draws 1,350W and produces 76 dB of noise — it is designed for dedicated mining environments, not living spaces. Professional-grade miners deliver the highest hashrate and revenue per unit but require proper infrastructure: a 240V circuit, adequate ventilation or exhaust ducting, and a space where noise is not a concern (garage, basement, warehouse, or outdoor enclosure).
However, this miner is compatible with DCENT_OS — D-Central's custom firmware that adds whisper-quiet fan profiles and 120V North American outlet support. With DCENT_OS installed, this industrial miner can be transformed for home use.
Heater-Class Miner
At 1,350W, this miner outputs approximately 4606.2 BTU/hr of heat — equivalent to a standard electric space heater. Every watt consumed by an ASIC miner is converted to heat with 100% efficiency, making it a space heater that also mines Bitcoin.
During heating season, the electricity cost of running this miner replaces your heating bill — and you earn Bitcoin on top. In cold climates like Canada, this dual-purpose approach can dramatically improve mining economics. D-Central offers purpose-built Bitcoin Space Heater editions with noise reduction, duct adapters, and heater-mode firmware for seamless home integration.
Profitability Calculator
| Period | Revenue | Electricity Cost | Profit |
|---|---|---|---|
| Daily | $0.46 | $2.27 | $-1.81 |
| Weekly | $3.19 | $15.88 | $-12.68 |
| Monthly | $13.68 | $68.04 | $-54.36 |
| Yearly | $166.39 | $827.82 | $-661.43 |
Heating offset estimates the value of heat replacing an electric space heater during heating season (~6 months/year in Canada). Actual savings depend on your heating setup and climate.
Where to Buy the Antminer S9j
D-Central Technologies
CanadaBitcoin Mining Hackers since 2016. Ships from Laval, Quebec.
View ProductASIC Miner Market
United StatesWide selection of new and used ASIC miners. US-based shipping.
Shop NowFull Specifications
| Model | Antminer S9j |
| Model Number | S9j |
| Manufacturer | Bitmain |
| Algorithm | SHA-256 |
| Coins Mined | Bitcoin (BTC) |
| Hashrate | 14.5 TH/s |
| Power Consumption | 1,350 W |
| Efficiency | 93.1 J/TH |
| Noise Level | 76 dB |
| Chip Model | BM1387 |
| Chip Count | 189 |
| Cooling | Air |
| Voltage Range | 100-240V AC |
| Operating Temperature | 0-40°C |
| Dimensions | 350x135x158 |
| Weight | 4.2 |
| Interface | Ethernet |
| BTU Output | 4606.2 BTU/hr |
| Equivalent Heater | Half a standard space heater (4,606 BTU/hr) |
| Daily Power Cost | $2.27/day |
| Monthly Power Cost | $68.04/mo |
| Circuit Requirement | Standard 120V 15A |
| Release Date | 2018-07-01 |
| Status | Discontinued |
Home Mining Assessment
Latest S9 variant with slightly higher hashrate. Same compact form factor. Popular in D-Central space heater builds.
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Frequently Asked Questions
Is the Antminer S9j profitable?
At $0.07/kWh, the Antminer S9j currently operates at a daily loss of $1.81. However, profitability can improve with lower electricity rates or rising BTC prices. If used as a space heater, the heating offset may make it economically viable.
Can I mine Bitcoin at home with the Antminer S9j?
Yes, the Antminer S9j scores 83/100 for home mining viability. It produces 76 dB of noise and draws 1,350W. It is suitable for home environments with appropriate placement considerations.
Can the Antminer S9j heat my home?
The Antminer S9j outputs approximately 4606.2 BTU/hr of heat. For reference, a typical space heater produces 5,000-5,500 BTU/hr. All electrical energy consumed by the miner is converted to heat, making it 100% efficient as a heater. D-Central offers Bitcoin Space Heater builds designed specifically for home heating integration.
Does D-Central repair the Antminer S9j?
Yes, D-Central provides professional repair services for the Antminer S9j. Our technicians have repaired 2,500+ miners since 2016. Services include hashboard repair, control board diagnostics, fan replacement, and full refurbishment. Ship your miner to our Laval, Quebec facility for diagnosis and repair.
What power supply does the Antminer S9j need?
The Antminer S9j draws 1,350W of power. You need a power supply rated for at least 1,485W with appropriate voltage (100-240V AC). D-Central stocks compatible power supplies in our shop. Always use a quality PSU from a reputable manufacturer to protect your investment.