Bitmain Antminer S9i (14Th)
Heater-Class Miner
At 1,320W, this miner outputs approximately 4504 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, miner heat can offset part of the heat a room would otherwise need from another electric heater. The economics depend on your electricity rate, room heat demand, BTC price, network difficulty, and noise constraints.
Profitability Calculator
| Period | Revenue | Electricity Cost | Profit |
|---|---|---|---|
| Daily | $0.39 | $2.22 | $-1.83 |
| Weekly | $2.70 | $15.52 | $-12.82 |
| Monthly | $11.57 | $66.53 | $-54.96 |
| Yearly | $140.75 | $809.42 | $-668.67 |
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.
Buy from D-Central
In stock and ready to ship from Laval, Quebec.
Where to Buy the Bitmain Antminer S9i (14Th)
D-Central Technologies
CanadaBitcoin Mining Hackers since 2016. Ships from Laval, Quebec.
Full Specifications
| Model | Bitmain Antminer S9i (14Th) |
| Model Number | Antminer S9i (14Th) |
| Manufacturer | Bitmain |
| Algorithm | SHA-256 |
| Coins Mined | Bitcoin (BTC) |
| Hashrate | 14 TH/s |
| Power Consumption | 1,320 W |
| Efficiency | 94.3 J/TH |
| Dimensions | 135 x 158 x 350mm |
| Weight | 4.2 |
| BTU Output | 4504 BTU/hr |
| Equivalent Heater | Half a standard space heater (4,504 BTU/hr) |
| Daily Power Cost | $2.22/day |
| Monthly Power Cost | $66.53/mo |
| Circuit Requirement | Standard 120V 15A |
| Release Date | 2018-05-01 |
| MSRP | $65.00 |
| Status | Active |
Home Mining Assessment
The Bitmain Antminer S9i (14Th) is a SHA-256 cryptocurrency miner manufactured by Bitmain. It delivers a hashrate of 14 TH/s with a power consumption of 1320W, achieving an efficiency of 94.3 J/TH.
Weighs 4200 kg, measures 135 x 158 x 350mm.
With a home mining score of 31/100, this miner is best suited for dedicated mining spaces for residential use. It produces 4504 BTU/h of heat output, making it suitable for supplemental space heating.
At 94.3 J/TH, the Bitmain Antminer S9i (14Th) sits in the legacy efficiency tier, so it is most economical run as a space heater or for hobby and learning setups rather than for pure profit.
Its waste heat (around 4504 BTU/h) can be ducted into a room, turning money you would otherwise spend on heating into hashrate.
View detailed specifications, real-time profitability calculations, and comparison data for the Bitmain Antminer S9i (14Th) in our comprehensive ASIC miner database.
Antminer S9 specs, heater path, and parts
Use the S9 cluster to route legacy miner owners to specs, repair guidance, APW3 power parts, hashboard bundles, and heater use cases.
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Frequently Asked Questions
What are the current mining economics for the Bitmain Antminer S9i (14Th)?
At $0.07/kWh, the Bitmain Antminer S9i (14Th) currently shows an estimated daily net cost of $1.83 before pool fees and hardware cost. Lower electricity rates, network changes, BTC price changes, or useful heat recovery can change the result.
Can I mine Bitcoin at home with the Bitmain Antminer S9i (14Th)?
The Bitmain Antminer S9i (14Th) has a home mining score of 31/100. With 0 dB noise and 1,320W power draw, it may require a dedicated space like a garage, basement, or outdoor enclosure. Consider noise insulation and proper ventilation.
Can the Bitmain Antminer S9i (14Th) heat my home?
The Bitmain Antminer S9i (14Th) outputs approximately 4504 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.
What power supply does the Bitmain Antminer S9i (14Th) need?
The Bitmain Antminer S9i (14Th) draws 1,320W of power. You need a power supply rated for at least 1,452W with appropriate voltage (200-240V AC). D-Central stocks compatible power supplies in our shop. Always use a quality PSU from a reputable manufacturer to protect the miner and wiring.