Coefficient of Performance Calculator
Calculate COP for heat pumps and refrigerators
About this calculator
The Coefficient of Performance (COP) Calculator helps determine the efficiency of heat pumps and refrigerators by measuring the ratio of useful heating or cooling output to energy input. COP is a crucial metric for evaluating HVAC system performance, energy costs, and environmental impact. Higher COP values indicate more efficient systems, making this calculator essential for engineers, technicians, and homeowners selecting or optimizing heating and cooling equipment for maximum energy savings.
How to use
Enter the heat output (for heat pumps) or cooling output (for refrigerators) in BTU/hr or watts, then input the electrical power consumption. Select your measurement units and click calculate. The calculator will instantly display the COP value, helping you assess system efficiency and compare different units.
Frequently asked questions
What is a good COP value for heat pumps?
Modern heat pumps typically have COP values between 2.5-4.0, with higher values indicating better efficiency and lower operating costs.
How does COP differ from EER or SEER?
COP measures heating efficiency, while EER and SEER measure cooling efficiency. COP is dimensionless, whereas EER/SEER use BTU/Wh units.
Does outdoor temperature affect heat pump COP?
Yes, heat pump COP decreases as outdoor temperature drops because the system works harder to extract heat from colder air.