Geothermal Heating & Cooling: Hilliard's Choice! To be completely honest, let's put it this way: more and more Hilliard residents are discovering that geothermal is the smarter heating and cooling choice. And we're helping them see that. We're Patriot Air Comfort Systems. And we know all about the advantages of geothermal heating and cooling. After all, we've been installing and servicing geothermal systems for a long time. Why are more people switching to geothermal? To start with, Hilliard is situated in a region with perfect ground conditions for geothermal installation. We've also got the kind of changing temperature highs and lows that let a geothermal system demonstrate its year-round comfort potentiality to best effect. Think about the savings, as well. Our Geothermal Savings Calculator can give you a good idea of what they'd be for your family. Learn more. Contact Patriot Air Comfort Systems, your Hilliard, Ohio geothermal authority.