Port Washington's Trusted Geothermal Contractor Professional Geothermal Systems is the contractor more people in Port Washington, Wisconsin, look to for geothermal installation and service. Our specialty is providing ... a professional work force – professionally trained, highly skilled, and thoroughly educated about everything geothermal answers to our customer’s most important geothermal questions installation and service of the highest caliber We're recognized, too, for offering the top geothermal heating and cooling systems on the market today. Those would be WaterFurnace systems - naturally! If you’d like more information on the benefits of geothermal heating and cooling, check out our Geothermal Savings Calculator. Energy savings aren’t the only benefits, of course. Wait till your family sees the year-round comfort a WaterFurnace geothermal system provides! Better yet, why wait? Contact Professional Geothermal Systems today. You’ll soon find out why so many Port Washington residents trust us for their geothermal heating and cooling needs.