Replace Existing System Is your old furnace or heat pump about to croak? Or do you just want to replace your inefficient equipment before it costs you an arm and a leg? WaterFurnace geothermal products provide the ideal replacement of older or inefficient equipment in the Charleston, SC 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 starting the race ahead of the pack. If not, we can simply install ductwork so you can appreciate the comfort of geothermal to its full extent. Another heating method to consider is radiant in-floor heating. Imagine walking on heated floors all winter long... We provide a unit that is capable of in-floor heating in conjunction with forced air to provide you with the most comfortable heating possible - all while helping the environment and saving money. Check out the savings calculator to see how much you can save by switching to a geothermal system!