Function

• Geothermal heat pumps use the natural heat of the Earth to provide a quiet and completely renewable source of energy to homes and other buildings. At a certain depth, the temperature of the Earth stays around 57 degrees Fahrenheit, and geothermal heat pumps use this steady temperature to generate reliable heat.
  
  

Setup

• A geothermal heat pump system uses a network of water-filled pipes buried deep in the ground. The system also requires water-to-air heat pumps to convert the energy from the water to the air used to heat the building.
  
  

Process

• A geothermal heat pump works by pumping water through the network of pipes underground. To increase the heat in the building, the system pumps water up from the ground where it brings heat from the Earth. To decrease the heat in the building, the system pumps water down through the pipes, where it carries heat away from the building and disperses it in the ground.