Grove City Looks to Us for Geothermal Heating & Cooling! We're Geo Source One Inc.. And we're distinguished throughout Grove City, Ohio, for our geothermal heating and cooling knowledge. Homeowners look to us for ... superior geothermal system installation and service qualified, highly trained personnel who know every aspect of geothermal heating and cooling - and know how to help you understand geothermal systems from one of the industry's most trusted names - WaterFurnace recommendation on how to maximize the potential from their geothermal heating and cooling installation Obviously, a pivotal reason people turn to us in the first place is for the savings they can realize on their energy bills with a geothermal system. Want a preview? Give our Geothermal Savings Calculator a go. Then take the next step and contact Geo Source One Inc.. We'll show you more of what makes geothermal systems the top choice for year-round heating and cooling comfort in Grove City.