Replace Existing System Has your gas furnace seen better days? Thinking about changing out you current inefficient system before it needs costly repairs? A smart choice when considering replacing an old or inefficient furnace in Green Bay, WI is to choose a WaterFurnace geothermal products. With no combustion, there isn't any need to exhaust waste gas. Our easy to install units only need an electrical connection you already have. So, our equipment can be installed virtually 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 experience the comfort of geothermal to its full extent. Another heating method to consider is radiant in-floor heating. Picture walking on warm floors all winter long... We offer 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!