Geothermal Heating & Cooling: Glenn Mills's Choice! To be completely accurate, let's put it this way: more and more Glenn Mills residents are discovering that geothermal is the most effective heating and cooling choice. And we're helping them see that. We're Sinton Air Conditioning & Heating, Inc.. And we understand all about the advantages of geothermal heating and cooling. After all, we've been installing and maintaining geothermal systems for years. What makes geothermal a no-brainer here? For starters, Glenn Mills is situated in an area with perfect soil conditions for geothermal installation. We've also got the kind of fluctuating temperature extremes that let a geothermal system show off its year-round comfort capabilities to best effect. Think about the savings, too. Our Geothermal Savings Calculator can provide you with a ball park figure of what they'd be for your family. Learn more. Contact Sinton Air Conditioning & Heating, Inc., your Glenn Mills, Pennsylvania geothermal authority.