How Geothermal Works As the seasons move from spring to winter, temperature varies throughout the year. Some climates can vary from fiery summers to chilly winters; Las Cruces included. Did you know there is a fairly consistent temperature, regardless of climate or season, just below the ground? The Earth's crust absorbs 47% of the sun's heat (energy) and is retained in the ground a few feet underneath the surface. Our geothermal systems tap into this free heat source with an earth loop. This innovative technology salvages the sun's heat supplying your home or office with central heating and cooling. Geothermal Heating During the heating cycle, a geothermal heat pump uses the earth loop to draw heat from the ground. As the system pulls heat from the loop it circulates it through a standard duct system as warm air. The same heat energy can also be utilized for a radiant floor system or domestic hot water heating. Geothermal Cooling Cooling the air is just the reverse process used in the heating cycle. Warm air is pushed by the geothermal heat pump into the ground. By removing the warm air, all that is left is cool air radiating throughout your home. Heating your water during this process is "free". For more information on how to get started with a geothermal system in the Las Cruces area, contact Sun City Plumbing & Heating. Start saving on your energy bills today.