ASIC Comparison Calculator
Compare up to 3 ASIC miners side by side. Evaluate hash rate, power consumption, efficiency, daily profit, and ROI to find the best mining hardware.
Mining Heat Output Calculator
Convert mining equipment wattage to BTU/hr heat output. Determine cooling requirements and understand how much heat your mining operation generates.
Equipment
Rated TDP or measured wall draw
W
Total mining units
hrs
/kWh
Environment
°F
°F
Total Heat Output⧉
110,890.00 BTU/hr
32,500.00 W from 10 rig(s) — all electrical energy becomes heat
AC Capacity Needed⧉
9.24 tons
1 ton of refrigeration = 12,000 BTU/hr cooling capacity
Airflow Required⧉
4,107.00 CFM
To keep temperature rise within 25°F
Mining Power Cost⧉
$1,872.00/mo
23,400.00 kWh at $0.08/kWh
Cooling Power Cost⧉
$617.76/mo
7,722.00 kWh — air cooling overhead
Total Monthly Cost⧉
$2,489.76/mo
Cooling is 24.80% of total electricity bill
Peak Room Temperature⧉
100°F
Status: Warning
Daily Energy Use⧉
780.0 kWh
$62.40/day for mining equipment only
Heat Danger Level
Normal
Warning
Critical
Cost Breakdown
Mining: $1,872.00Cooling: $617.76
Scaling Reference
| Rigs | Total W | BTU/hr | AC Tons | CFM | Monthly Cost |
|---|---|---|---|---|---|
| 1 | 3,250.00 | 11,089.00 | 0.9 | 411.00 | $187.00 |
| 5 | 16,250.00 | 55,445.00 | 4.6 | 2,054.00 | $936.00 |
| 10 | 32,500.00 | 110,890.00 | 9.2 | 4,107.00 | $1,872.00 |
| 25 | 81,250.00 | 277,225.00 | 23.1 | 10,268.00 | $4,680.00 |
| 50 | 162,500.00 | 554,450.00 | 46.2 | 20,535.00 | $9,360.00 |
| 100 | 325,000.00 | 1,108,900.00 | 92.4 | 41,070.00 | $18,720.00 |
Cooling Method Comparison
| Method | Efficiency | Setup Cost | Best For | Noise |
|---|---|---|---|---|
| Air Cooling | Low | Low | Small rigs (1-5 units) | High |
| Evaporative | Medium | Medium | Dry climates, mid-scale farms | Medium |
| Rear-Door HX | Medium-High | High | Data center environments | Low |
| Immersion | Highest | Very High | Large farms, heat recovery | Very Low |
Planning notes, formulas, and examples
About the Mining Heat Output Calculator
Mining equipment converts nearly 100% of its electrical input into heat. Understanding exactly how much heat your operation generates is essential for sizing cooling systems, planning ventilation, and estimating overhead costs.
This calculator converts your equipment's total wattage into BTU/hr (the standard unit for heating and cooling capacity), helps you size air conditioning in tons, and estimates the airflow needed to maintain safe temperatures.
Whether you're planning a home mining setup or a commercial facility, accurate heat load calculations prevent equipment damage from overheating and ensure your cooling systems are properly sized.
Use the result to map token-release or fee scenarios and revisit the model when market conditions, unlock terms, or portfolio assumptions change.
When This Page Helps
Every watt of power your miners consume becomes a watt of heat that must be removed. Without accurate heat load calculations, you risk undersized cooling (leading to overheating and throttling) or oversized cooling (wasting money on excess capacity).
How to Use the Inputs
- Enter the total wattage of all mining equipment.
- View heat output in BTU/hr and watts.
- See the required AC capacity in tons.
- Enter ambient temperature to calculate required airflow in CFM.
- Use results to size your cooling system appropriately.
Formula used
BTU/hr = Watts × 3.412
AC Tons = BTU/hr / 12,000
Airflow (CFM) = (BTU/hr) / (1.08 × Temperature Rise °F)
1 Watt = 1 Watt of heat (100% conversion)Example Calculation
Result: 34,120 BTU/hr | 2.84 AC tons | 1,579 CFM needed
A 10 kW mining setup produces 34,120 BTU/hr. You'd need about 2.84 tons of AC capacity (a 3-ton unit) to cool it. If allowing a 20°F temperature rise, you need 1,579 CFM of airflow.
Tips & Best Practices
- Size cooling systems with 20% headroom for hot days and peak loads.
- In cold climates, mining heat can replace your heating system during winter.
- Hot air rises — place exhaust vents at the top of the room for natural convection.
- Keep inlet and exhaust air paths separate to prevent hot air recirculation.
- Every 1 kW of mining requires about 3,412 BTU/hr of cooling capacity.
- Immersion cooling eliminates the need for air cooling entirely.
Heat: The Mining Byproduct
Mining rigs are essentially electric heaters that also compute hashes. Every ASIC chip, voltage regulator, and fan motor contributes to the total thermal output. Managing this heat effectively is as important as the mining itself.
Sizing Cooling Systems
Under-sizing cooling causes thermal throttling (reduced hash rate and revenue), equipment shutdown, and accelerated hardware degradation. Over-sizing wastes capital on unnecessary equipment. Accurate heat load calculation strikes the right balance.
Creative Heat Utilization
Forward-thinking miners are turning the heat problem into an advantage: heating homes and businesses, warming greenhouses, drying agriculture products, and even heating swimming pools. By capturing and using the heat, the effective mining cost drops significantly.
Sources & Methodology
Last updated:
Frequently Asked Questions
Practically yes. All electrical energy consumed by resistive and semiconductor components becomes thermal energy. A small fraction leaves as electromagnetic radiation, but for all practical purposes, watts in equals watts of heat.
Divide your total BTU/hr by 12,000 to get tons. A 3 kW miner produces 10,236 BTU/hr, requiring about 0.85 tons. For a 10-miner facility, you'd need about 8.5 tons of cooling capacity.
Yes. Mining heat can be used for space heating, water heating, greenhouse warming, timber drying, and other applications. This "heat recycling" effectively subsidizes your mining operation by offsetting heating costs.
ASIC manufacturers typically recommend inlet temperatures below 35-40°C (95-104°F). Cooler is better for equipment longevity and stability. Aim for 20-30°C (68-86°F) inlet temperature.
CFM (Cubic Feet per Minute) measures airflow volume. Higher CFM means more air moves through, carrying more heat away. Mining rooms need sufficient CFM to prevent hot spots and maintain consistent temperatures.
Both measure energy/power. 1 watt = 3.412 BTU/hr. The cooling industry uses BTU/hr and tons (12,000 BTU/hr = 1 ton) while electrical equipment uses watts. This calculator converts between them.
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