A heat pump might be your best option for efficient heating and cooling.| Energy.gov
Geothermal heat pumps are expensive to install but pay for themselves over time in reduced heating and cooling costs.| Energy.gov
Installing this kind of heat pump in your new or existing home can save money while improving the efficiency of how you heat, ventilate, and air condition your house.| Energy.gov
Absorption heat pumps are air-source heat pumps that run on a heat source -- usually natural gas -- rather than electricity.| Energy.gov
Air source heat pumps work differently compared to other more conventional forms of heating such as gas or oil because no fossil fuels are combusted.| Source Heat Pump
Heat pumps use a small amount of energy to move heat from one place to another. But is one right for your home?| HowStuffWorks