EER/SEER/HSPF Conversion Calculator

Convert between Energy Efficiency Ratio (EER), Seasonal Energy Efficiency Ratio (SEER), and Heating Seasonal Performance Factor (HSPF).

Seasonal Energy Efficiency Ratio for cooling equipment.
Btu/Wh
Heating Seasonal Performance Factor for heat pumps.
Btu/Wh

Results

EER from SEER-Btu/Wh
COP (Cooling)-
COP (Heating)-
References: AHRI Standard 210/240. Performance Rating of Unitary Air-Conditioning and Air-Source Heat Pump Equipment.