Geothermal Retrofits More and more residents in Central Minnesota are discovering just how great WaterFurnace geothermal systems are for retrofit or replacement applications. The advantages are obvious: WaterFurnace geothermal systems are among the most dynamic, energy-saving, eco-friendly heating and cooling solutions in the industry today. Nearly all geothermal units are a breeze to install - particularly those replacing another forced-air system. Geothermal systems can be installed in areas where fossil fuel furnaces are unfitting. That's because, with geothermal, there's no combustion and thus no need to vent exhaust gases. Geothermal technology is perfect for in-floor radiant heating, because heated water circulates throughout pipes underneath your floors to heat your rooms. If you're a Central Minnesota resident looking to retrofit or replace your current heating and cooling system, contact us, the experts Geothermal Concept. We'll show you all the advantages of a WaterFurnace geothermal retrofit or replacement.