We're Otterbein's Primary Geothermal Contractor! Otterbein, Indiana, residents have all kinds of reasons for desiring a geothermal heating and cooling system: exceptional comfort all year – no matter how crazy the seasonal variations stable operating performance 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 superior installation and service from Korschot's Heating and Air, Otterbein's geothermal professionals. Find out more about what a geothermal heating and cooling system can do to improve your family's comfort. Look at our Geothermal Savings Calculator. Then contact Korschot's Heating and Air. We sell, install, and service WaterFurnace geothermal systems, the very best on the market today.