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