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Space heating is the largest use of energy in homes and a significant contributor to greenhouse gas emissions. An ENERGY STAR® certified heat pump is a highly efficient, climate friendly, and modern alternative to gas or electric furnaces.

A heat pump takes heat energy from one place and moves it to another by compressing and expanding refrigerant. A heat pump extracts heat from the air and transfers this heat to either the inside or outside of your home, depending on the season. A central heat pump distributes heat and cool air through ductwork connected to vents in each room.

Did you see a building science or energy efficiency term you did not understand? Check out our glossary.