Replace Existing System Is your old furnace or heat pump about to die? Or do you just want to toss out your inefficient equipment before it breaks your piggy bank? WaterFurnace geothermal products provide a smart alternative for the replacement of older or inefficient equipment in the Knoxville, TN area. Most units are simple to install and can be installed in areas unsuitable for fossil fuel furnaces. There is no combustion or need to vent exhaust gasses which means our equipment can be installed almost anywhere. If you have ductwork already installed in your home, you are one step ahead of the game. If not, we can effortlessly install ductwork so you can experience the comfort of geothermal to its full extent. Another heating method to consider is radiant in-floor heating. Picture walking on heated floors all winter long... We provide a unit that is capable of in-floor heating in association with forced air to provide you with the most comfortable heating possible - all while being a steward of the environment and saving money. Check out the savings calculator to see how much you can save by switching to a geothermal system!