Cass City Looks to Us for Geothermal Heating & Cooling! We're Kozy Home Heating & Cooling (aka AllTemp Comfort). And we're distinguished throughout Cass City, Michigan, for our geothermal heating and cooling expertise. Residents look to us for ... superior geothermal system installation and service qualified, highly trained personnel who know every aspect of geothermal heating and cooling - and know how to help you understand geothermal systems from one of the industry's most established names - WaterFurnace professional instructions on how to maximize the potential from their geothermal heating and cooling installation Obviously, a big reason people turn to us to begin with is for the savings they can get on their energy bills with a geothermal system. Want a snap shot? Give our Geothermal Savings Calculator a go. Then take the next step and contact Kozy Home Heating & Cooling (aka AllTemp Comfort). We'll show you more of what makes geothermal systems the premium choice for year-round heating and cooling comfort in Cass City.