Geothermal Retrofits More and more residents in Bloomington are learning just how great WaterFurnace geothermal systems are for retrofit or replacement applications. The gains are plain to see: WaterFurnace geothermal systems are among the most dynamic, energy-conserving, eco-friendly heating and cooling solutions available. Most 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 unsuitable. That's because, with geothermal, there's no combustion and therefore no need to vent exhaust gases. Geothermal technology is perfect for in-floor radiant heating, because hot water circulates throughout pipes below your floors to heat your rooms. If you're a Bloomington resident looking to retrofit or replace your current heating and cooling system, contact us, the experts Truesdel Heating-Cooling and Maintenance LLC. We'll walk you through all the advantages of a WaterFurnace geothermal retrofit or replacement.