Geothermal Retrofits More and more residents in Knoxville are learning just how great WaterFurnace geothermal systems are for retrofit or replacement applications. The advantages are easy to see: WaterFurnace geothermal systems are counted as one of the most economical, energy-conserving, environmentally friendly heating and cooling solutions on the market today. Most geothermal units are simple 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 thus no need to vent exhaust gases. Geothermal technology is optimal for in-floor radiant heating, because heated water radiates through pipes underneath your floors to heat your rooms. If you're a Knoxville resident looking to retrofit or replace your current heating and cooling system, contact us, the experts Pioneer Heating and Air Conditioning, Inc.. We'll show you all the advantages of a WaterFurnace geothermal retrofit or replacement.