Geothermal technology uses the earth’s natural thermal energy—a renewable resource—to heat your home. While outdoor temperatures fluctuate substantially with the seasons, subsurface ground and water temperatures remain relatively constant year–round. A geothermal loop, running underground or underwater, capitalizes on these constant temperatures.
In the winter, fluid circulating through the loop absorbs heat and carries it indoors where it is compressed to a higher temperature and distributed throughout your home. In the summer, the system reverses, pulling heat from your home and using the loop to deposit it in the cooler earth or water.
Geothermal systems simply transfer heat to and from the earth or pond.