More and more rural customers in the country are turning to heat pumps as an economical alternative to expensive oil or electric forced air. Even Propane Furnaces can benefit from having a heat pump.
A heat pump transfers heat instead of creating it. This requires much less energy as you are only moving heat from one location to another. In the winter you are moving heat from the cold air into your house. In the summer the process is reversed.
Heat pumps can assist Oil, Electric and Propane Furnaces to dramatically cut down on the consumption of the fossil fuel burned.
Have a look at the diagram on this page. It will help to clarify how a heat pump works.