What does the acronym HSPF stand for?

• A. Heating Seasonal Performance Factor
• B. Hybrid System Power Factor
• C. High Speed Pressure Factor
• D. Healing Seasonal Performance Factor

Answer: (A)

HSPF is a seasonal efficiency rating for heating performance of heat pumps. It stands for Heating Seasonal Performance Factor. The value is found by dividing the total heat delivered by the system over the heating season (in BTUs) by the total electrical energy consumed (in watt-hours) during that same period. A higher HSPF means the unit provides more heat per unit of electricity, so it’s a key way to compare how efficient different heat pumps are in real heating conditions. The other options don’t reflect the standard HVAC term, while Heating Seasonal Performance Factor is the recognized designation.