How Heat Pump Heating Seasonal Performance Factor (HSPF) Is Calculated
Heat pump buyers and technicians rely on the Heating Seasonal Performance Factor (HSPF) to compare system efficiency during the heating season. This article explains how HSPF is calculated, the testing standards behind it, how to convert HSPF to other efficiency metrics, and what consumers and professionals should consider when evaluating heat pump performance. Metric Definition … Read more