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HVAC Education

HSPF2 Rating

Heating Seasonal Performance Factor 2 (HSPF2) is a standardized rating used to compare energy efficiencies between split-system air-source heat pumps.

HSPF2 is used by all heat pump manufacturers to indicate efficiency ratings. Like miles per gallon for your car, the higher the HSPF2 number, the more efficient the system.

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