Holic H28
Professional-Grade Miner
This miner draws 2,100W and produces 75+ 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).
For home miners looking for a quieter alternative, consider our Bitcoin Space Heater builds or explore open-source miners like the Bitaxe that are purpose-built for residential environments.
Heater-Class Miner
At 2,100W, this miner outputs approximately 7165 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 | $0.80 | $3.53 | $-2.73 |
| Weekly | $5.57 | $24.70 | $-19.13 |
| Monthly | $23.85 | $105.84 | $-81.99 |
| Yearly | $290.22 | $1,287.72 | $-997.50 |
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 Holic H28
D-Central Technologies
CanadaBitcoin Mining Hackers since 2016. Ships from Laval, Quebec.
Shop all Bitcoin mining productsASIC Miner Market
United StatesWide selection of new and used ASIC miners. US-based shipping.
Shop NowFull Specifications
| Model | Holic H28 |
| Model Number | H28 |
| Manufacturer | Holic |
| Algorithm | SHA-256 |
| Coins Mined | Bitcoin (BTC) |
| Hashrate | 28 TH/s |
| Power Consumption | 2,100 W |
| Efficiency | 75 J/TH |
| Dimensions | 175 x 189 x 420mm |
| BTU Output | 7165 BTU/hr |
| Equivalent Heater | Equal to a 2,100W space heater |
| Daily Power Cost | $3.53/day |
| Monthly Power Cost | $105.84/mo |
| Circuit Requirement | 240V circuit required |
| Release Date | 2018-12-01 |
| Status | Active |
Home Mining Assessment
The Holic H28 is a SHA-256 cryptocurrency miner manufactured by Holic. It delivers a hashrate of 28 TH/s with a power consumption of 2100W, achieving an efficiency of 75 J/TH.
Measures 175 x 189 x 420mm.
With a home mining score of 26/100, this miner is best suited for dedicated mining spaces for residential use. It produces 7165 BTU/h of heat output, making it effective for supplemental space heating.
At 75 J/TH, the Holic H28 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 7165 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 Holic H28 in our comprehensive ASIC miner database.
Related Miners
Bitmain Antminer S21e Hyd (310Th)
Antminer S19 Hydro
Canaan Avalon Q
Bitaxe Hex
Frequently Asked Questions
What are the current mining economics for the Holic H28?
At $0.07/kWh, the Holic H28 currently shows an estimated daily net cost of $2.73 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 Holic H28?
The Holic H28 has a home mining score of 26/100. With 0 dB noise and 2,100W power draw, it may require a dedicated space like a garage, basement, or outdoor enclosure. Consider noise insulation and proper ventilation.
Can the Holic H28 heat my home?
The Holic H28 outputs approximately 7165 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 Holic H28 need?
The Holic H28 draws 2,100W of power. You need a power supply rated for at least 2,310W 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.