Equipment Heat Gain Calculator

Calculate heat gain from electrical equipment, computers, and appliances. Includes motor heat gain calculations.

Total electrical power of equipment.
watts
Percentage of time equipment is operating (0.3-1.0).
Fraction of heat radiated to space (0.5-1.0, motors 0.7-0.9).
Motor horsepower (0 if N/A).
HP
Motor efficiency (0.7-0.95).

Results

Equipment Heat Gain-BTU/hr
Motor Heat Gain-BTU/hr
Total Heat Gain-BTU/hr
Cooling Load-tons
References: ASHRAE Fundamentals Chapter 18: Nonresidential Cooling and Heating Load Calculations