Using a heat pump can be one of the most efficient ways to cool and heat your home. In cooling mode, it works like an air conditioner, extracting heat from the air inside and releasing it outside.

The increase in demand is thought to be the result of consumers wanting to keep their bills down in the longer term ...

The first heat pumps to pass the U.S. Department of Energy's Cold Climate Heat Pump Challenge might be in customers' homes by the end of the year.