We're Belgium's Primary Geothermal Contractor! Belgium, Wisconsin, residents have all kinds of reasons for wanting a geothermal heating and cooling system: remarkable comfort all year – no matter how crazy the weather variations smooth operating efficiency energy performance (They would look forever to find a more "green," more natural way to heat and cool their homes!) significant – often outstanding – savings on their energy bills premium installation and maintenance from Professional Geothermal Systems, Belgium's geothermal experts. Find out more about what a geothermal heating and cooling system can do to increase your family's comfort. Check out our Geothermal Savings Calculator. Then contact Professional Geothermal Systems. We sell, install, and service WaterFurnace geothermal systems, the finest on the market today.