Clarks Hill, Indiana, Is Going Geothermal! Korschot's Heating and Air has obviously had a hand in that! We're a heating and cooling contractor who’s expertise is installing and servicing geothermal systems right here in Clarks Hill, Indiana. Area homeowners place their confidence in us for ... our professional, highly educated staff our expert geothermal installation and service capabilities the planning assistance and advice we provide - to help Clarks Hill customers maximize the potential in their geothermal installations geothermal heating and cooling systems from the most prestigious name in the business: WaterFurnace If you've been considering going geothermal, contact Korschot's Heating and Air today, Clarks Hill's top geothermal contractor. (For a quick overview of the kind savings your family could be getting with a geothermal heating and cooling system, try our handy Geothermal Savings Calculator.)