Magic Heat Pumps

Tap free energy from the air or ground to heat and cool your home with this superefficient technology.

Air-Source Heat Pump
A typical air-source heat pump design set for winter operation.
Photo courtesy MOTHER EARTH NEWS editors
Geothermal Heating
In locations with plentiful groundwater, an open geothermal system is the simplest toinstall.
Photo courtesy MOTHER EARTH NEWS editors
Heat Pump
This graphic illustrates basic heat pump operation (starting at the evaporator and moving counterclockwise).
Photo courtesy MOTHER EARTH NEWS editors
Renewable Energy
Closed-loop geothermal systems can be either horizontal-loop (above) or vertical- oop.
Photo courtesy MOTHER EARTH NEWS editors

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