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.

Heating and cooling heavily relies on planet-warming fossil fuels. But some energy companies are looking to an unlimited ...

If your heater is blowing but isn't sending out warm air, you need to follow these steps to get it fixed. Here's how to keep your furnace working.

Completely restructuring your central ... for air-source versions. But a third kind of system, called air-to-air heat pumps can be used for both air conditioning and heating. In fact, these systems ...