Geothermal is Big in Calico Rock! Calico Rock, Arizona, homeowners enjoy geothermal heating and cooling. And why shouldn't they? We've got the ideal ground conditions here. And our fluctuating temperature extremes make geothermal installations an even better choice for year-round heating and cooling comfort. Want to see how much a geothermal system of your own could save you in Calico Rock? Check out our handy Geothermal Savings Calculator. Then do what so many other Calico Rock residents do. Contact the experts at Custom Heating & Cooling Inc.. We'll help you plan your geothermal system, install it right, and make sure you get the service you need to get the most out of it.