Geothermal Heating & Cooling: Shillington's Choice! To be completely honest, let's put it this way: more and more Shillington residents are coming to the same conclusion that geothermal is the smarter heating and cooling choice. And we're helping them realize that. We're Paul W. Essig Inc.. And we know all about the advantages of geothermal heating and cooling. After all, we've been putting in and maintaining geothermal systems for years. What makes geothermal a no-brainer here? To start with, Shillington is situated in an area with ideal ground conditions for geothermal installation. We've also got the kind of seasonal temperature extremes that let a geothermal system show off its year-round comfort potentiality to best effect. Think about the savings, as well. Our Geothermal Savings Calculator can provide you with a good idea of what they'd be for your family. Learn more. Contact Paul W. Essig Inc., your Shillington, Pennsylvania geothermal authority.