Air-Source Heat Pumps
Depending on where you live and the size of the unit, an electric air-source heat pump that has earned the ENERGY STAR can save you about $130 a year on your electricity bill. Electric air-source heat pumps, often used in moderate climates, use the difference between outdoor air temperatures and indoor air temperatures to cool and heat your home. Heat pumps remove excess heat from indoor air and release it outside.
ENERGY STAR qualified heat pumps that have earned ENERGY STAR have a higher seasonal efficiency rating (SEER) than standard models. Qualified pumps have a SEER of 12 and a heating seasonal performance factor (HSPF) of 7.6 and use 15-30% less energy than standard models.
Consider ENERGY STAR if your current heating and cooling system is older than 10 years, and make sure your unit is properly sized and installed to maximize the unit's efficiency and your home's comfort.