We're the Geothermal Experts in Spring Valley! At Johnson Comfort Systems, Inc., we specialize in WaterFurnace geothermal heating and cooling systems. Spring Valley residents understand that we provide... the top 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 savings. We believe you like what you see!) In Spring Valley, Minnesota, we're by far the best the geothermal heating and cooling contractor to call. Contact Johnson Comfort Systems, Inc. today.