Delphi Looks to Us for Its Geothermal Needs We’re Korschot's Heating and Air, the distinguished "go-to" team for Delphi, Indiana's geothermal heating and cooling. Delphi residents look to us for ... the best WaterFurnace geothermal heating and cooling systems expert installation and service from highly skilled, highly trained professionals professional advice on how to maximize the potential of their geothermal installations With the economy like it is, there's never been a opportune time to put a WaterFurnace geothermal system to use for you. And we're the ones to do it in Delphi, Indiana. Contact Korschot's Heating and Air today. Want to taste and see just how big "going geothermal" could save you on your energy bills? Take a moment or two with our simple Geothermal Savings Calculator.