We'll Help You Save with Geothermal in Washington County! Want an idea of just how much a geothermal heating and cooling system could cut your energy bills in Washington County? Our simple Geothermal Savings Calculator will tell you. Just plug in your information and prepare to be pleased. Obviously, to get the maximum potential of a geothermal system, you require the right system - and the right contractor to install and service it. You need a WaterFurnace system from Professional Geothermal Systems, the finest geothermal heating & cooling contractor in Washington County, Wisconsin. Contact Professional Geothermal Systems today and let us show you more of the advantages you'll love with a WaterFurnace geothermal heating and cooling system. We'll also walk you through why our installation and service have won so many geothermal converts in Washington County.