Mining Heat Recovery Calculator

Calculate the heating value and cost savings from capturing waste heat produced by crypto mining equipment.

Total mining power (kW)

Heat recovery efficiency (%)

Heating fuel cost ($/therm)

Heating season (months)

Hot water usage (gal/day)

Cold water temp (°F)

Target water temp (°F)

Tab to move between fields

Total annual savings ($)

$4,213.70

≈ 4 smartphones

Total heat output (BTU/hr)110,890

Recoverable heat (BTU/hr)77,623

Monthly heating savings ($)$670.66

Annual heating savings ($)$4,023.98

Annual water heating savings ($)$189.72

Equivalent heated area (sq ft)2,587

Water heating capacity used (%)2.3

Water Heating Kw0.53

How to Use This Calculator

Enter the total mining farm power consumption in kW.
Set the heat recovery efficiency percentage and the local heating fuel cost per therm.
Enter the heating season length in months, plus your daily hot water usage and cold/target water temperatures.
Review the annual heating and water heating cost offsets from recovered mining heat.
Use this to justify building mining in locations with high heating demands.

How the result changes with Heating fuel cost ($/therm)

Total mining power (kW): Total power consumed by mining equipment in kilowatts (e.g., 10 miners at 3,250W = 32.5 kW).
Heat recovery efficiency (%): Percentage of waste heat successfully captured. Air ducting: 50-70%. Immersion cooling: 80-95%.
Heating fuel cost ($/therm): Cost of the fuel being replaced (natural gas ~$1.00-$1.50/therm, propane ~$2.50/therm, oil ~$3.00/therm).
Heating season (months): Number of months per year where space heating is needed.
Hot water usage (gal/day): Daily hot water consumption in gallons. Average household: 50-80 gal/day.
Cold water temp (°F): Temperature of incoming cold water.
Target water temp (°F): Desired hot water temperature. Standard residential: 120°F.

Total annual savings ($): Combined heating and hot water fuel cost savings per year.
Total heat output (BTU/hr): Total heat produced by mining equipment.
Recoverable heat (BTU/hr): Heat that can actually be captured and used, based on your recovery efficiency.
Monthly heating savings ($): Monthly fuel savings during the heating season.
Annual heating savings ($): Total space heating fuel savings per year.
Annual water heating savings ($): Fuel savings from pre-heating or fully heating domestic water year-round.
Equivalent heated area (sq ft): Approximate floor area that could be heated by the recovered heat.
Water heating capacity used (%): Percentage of recoverable heat consumed by water heating. Under 100% means surplus heat is available.

Identify Input Parameters
4 parameters
Total mining power (kW) = 32.5, Heat recovery efficiency (%) = 70, Heating fuel cost ($/therm) = 1.2, Heating season (months) = 6 = 7 input(s) provided
Calculate Total annual savings
Total annual savings = annualHeatingFuelSavings + annualWaterHeatingSavings
4213.7 = $4,213.7
Calculate Total heat output
Total heat output = totalMiningPowerKw * 1000 * 3.412
110890 = 110890
Calculate Recoverable heat
Recoverable heat = totalBtuPerHour * (heatRecoveryEfficiency / 100)
77623 = 77623