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How Geothermal Works

TerraTherm Supply is the Midwest’s largest distributor of geothermal heat pump systems, radiant floor heat systems, high-efficiency gas and electric radiant floor water heaters, and all the components that turn parts into systems.


Geothermal Energy is heat (thermal) derived from the earth (geo). It is the thermal energy contained in the rock and fluid (that fills the fractures and pores within the rock) in the earth’s crust.

It simply takes advantage of the earth’s ability to store heat.  Water circulates through a loop of pipe buried in the ground and draws off the free heat from the earth.  The heat is then concentrated by the geothermal heat pump through the refrigeration process and is released into your home through the blower or radiant floor heat system.  In the summer, the process is reversed and heat is removed from your home and put back into the earth.

The loop that collects the heat from the earth can take a variety of shapes depending on the location.  All of these loop types serve one purpose: To collect free heat from the earth and deliver it to the heat pump.

To see actual loop systems being installed Click on the Graphic Below.

To See a Video on how to make a Slinky Loop, watch the video below:

Aesthetically pleasing too, ground source heat pumps require no fuel storage tanks, no external vents or chimney, and no noisy condenser to disturb your neighbors or detract from the appearance of your home.

To learn how geothermal energy systems can benefit homeowners, visit the HOMEOWNERS page of the U.S. Department of Energy.