We're the Geothermal Source in Waukesha County! Waukesha County residents in the know turn to Professional Geothermal Systems for all their geothermal heating and cooling needs. They trust us to provide not only the correct installation and service but also the knowledge to help them maximize the potential from their geothermal systems. Thinking about a geothermal system of your own? Give our nifty little Geothermal Savings Calculator a whirl. Just load it with your data and stand in awe of the results. Then, contact us, the Waukesha County, Wisconsin, geothermal professionals at Professional Geothermal Systems.