We're the Geothermal Experts in Ozaukee County! At Professional Geothermal Systems, we specialize in WaterFurnace geothermal heating and cooling systems. Ozaukee County residents know we provide... the finest geothermal systems in the industry today finest geothermal installation and maintenance the kind of support that helps them realize the full comfort and energy-savings anticipated from a geothermal system (Our Geothermal Savings Calculator will give you potential monetary savings. We believe you like what you see!) In Ozaukee County, Wisconsin, we're by far the best the geothermal heating and cooling contractor to call. Contact Professional Geothermal Systems today.