Your #1 Choice for Furnace Repair in the Fond du Lac Area!



A geothermal system can save you 30% to 70% on your monthly utility bills, depending on the type and fuel source of your current system. While we service and repair all brands of geothermal, for new installations we recommend and install American made GeoComfort Geothermal Systems, which have been shown to have higher heat capacity, greater efficiency, and more rigorous quality testing than competitor systems (view a comparison here). GeoComfort systems are backed by a standard 10 year warranty and available lifetime limited warranty.

We specialize in Geothermal to keep your home comfortable in Fond du Lac WI.

How Geothermal Works

Your own backyard has the potential to be an energy source for heating and cooling comfort. Outdoor air temperatures fluctuate throughout the year with the changing seasons. In contrast, ground temperatures about four to six feet below the Earth’s surface remain relatively moderate and constant all year. A geothermal system circulates a water based solution through a buried loop system to take advantage of these constant temperatures. A single piece of equipment has the ability to heat and cool your home, while also providing some or all of your home’s hot water.

Trust our techs with all of your Geothermal heating needs.

During the heating cycle, the fluid circulates through the loop, extracting heat from the ground. The heat energy is transferred to the geothermal unit. The unit compresses the extracted heat to a high temperature and delivers it to your home through a normal duct system or a radiant heat system.

Leave the maintenance to our techs, and call us to service your Geothermal cooling system.

For cooling, the process is simply reversed. Because the earth is much cooler than the air temperature on a hot day, the geothermal system removes heat from the home and deposits it into the ground. The fluid is cooled by the ground temperatures and returned to the unit for cooling your home.

See what makes Lighthart HVAC your number one choice for Geothermal repair in Plymouth WI.
Find out ways to save energy and money with Lighthart HVAC Geothermal repair service in Sheboygan WI