Heating Seasonal Performance Factor (HSPF) is a heating efficiency rating for heat pumps. The higher the rating, the more efficient the heat pump. A more efficient heat pump will result in less energy use and increased energy savings over the life of the system, compared to a less efficient heat pump.
What is considered a good HSPF rating?
Generally, you should look for heat pumps with a HSPF rating of between 8 and 10. Heat pumps with a rating of at least 8.2 HSPF are awarded the ENERGY STAR® label by the U.S. EPA. However, for a heat pump to have the ENERGY STAR label, it must also have a Seasonal Energy Efficiency Ratio (SEER) rating of 12 or greater.
Lennox® heat pumps
With industry-leading efficiencies of up to 23.50 SEER and 10.20 HSPF, Lennox® heat pumps are the most precise and efficient you can buy.*
*Efficiency claim based on comparison of air conditioning and heat pump products' SEER as published in AHRI (January 2015). Actual system combination efficiency may vary; consult AHRI for exact system efficiencies. Precision claim based on the cooling capacity range of the XC/XP25-036 units as compared to equivalent-sized competitive variable-capacity compressor units.