We're the Geothermal Experts in Princeton! At Appalachian Heating, we specialize in WaterFurnace geothermal heating and cooling systems. Princeton residents know we provide... the best geothermal systems in the industry today top-quality geothermal installation and maintenance the kind of support that helps them realize the full comfort and energy-savings expected from a geothermal system (Our Geothermal Savings Calculator will give you potential monetary benefits. We believe you like what you see!) In Princeton, West Virginia, we're by far the best the geothermal heating and cooling contractor to call. Contact Appalachian Heating today.