Electric air-source heat pump, most commonly used in moderate climates like Southern California,
operates by using the difference between outdoor air temperatures and indoor air temperatures
to both cool and heat your home (Energy Star). When properly installed, an air-source heat
pump can deliver one-and-a-half to three times more heat energy to a home than the
electrical energy it consumes. This is possible because a heat pump moves heat rather
than converting it from a fuel, like in combustion heating systems (Energy Savers). More efficient Energy Star models can save
you 9% or more over standard models and 20% over what you currently have in your
home (Energy Star). Because air source heat pumps are usually
powered by electricity, the higher cost of electricity will need to be evaluated
by you and your contractor. In addition, air source heat pumps become less efficient
once temperatures go below 41 degrees and do not function well in areas with extended
periods of sub-freezing temperatures without gas heating as a backup.
Estimate your potential to save energy and money by installing this product, please
see the U.S. Department of Energy's Home Energy Saver calculator.