Geothermal Heating & Cooling: Cotter's Choice! To be completely honest, let's put it this way: more and more Cotter residents are discovering that geothermal is the smarter heating and cooling choice. And we're helping them realize that. We're Custom Heating & Cooling Inc.. And we know all about the benefits of geothermal heating and cooling. After all, we've been installing and servicing geothermal systems for years. What makes geothermal a no-brainer here? For starters, Cotter is located in a region with perfect soil conditions for geothermal installation. We've also got the kind of fluctuating temperature highs and lows that let a geothermal system display its year-round comfort potentiality to best effect. Think about the savings, too. Our Geothermal Savings Calculator can provide you with a good idea of what they'd be for your family. Learn more. Contact Custom Heating & Cooling Inc., your Cotter, Arizona geothermal authority.