Geothermal is Big in Sunbury! Geothermal heating and cooling is adored by many homeowners in Sunbury, Ohio. And why wouldn't they love it? Our geothermal systems, because of our fluctuating temperature extremes, are a great choice for year-round heating and cooling comfort. We also have the perfect ground conditions. With that said, you should checkout how much you can save in Sunbury with your own geothermal system. Check out our handy Geothermal Savings Calculator to find out. Once you have seen how great your savings can be, contact the professionals at Geo Source One Inc., just like so many other Sunbury residents have done. We would love to support you in planning your geothermal system so that it's installed right.Our highly skilled and friendly staff will also make sure you get the most out of it.