Geothermal Retrofits More and more residents in Kalkaska are realizing just how great WaterFurnace geothermal systems are for retrofit or replacement applications. The advantages are clear: WaterFurnace geothermal systems are counted as one of the most efficient, energy-conserving, eco-friendly heating and cooling solutions available. Most geothermal units are a breeze to to place in your home - 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 through pipes underneath your floors to heat your rooms. If you're a Kalkaska resident looking to retrofit or replace your current heating and cooling system, contact us, the experts Kalkaska Pumbing & Heating Inc.. We'll walk you through all the advantages of a WaterFurnace geothermal retrofit or replacement.