Replace Existing System Has your worn-out furnace seen better days? It's time to start thinking about changing out your aging furnace before it stops ticking. Instead of another traditional furnace to heat your Grinnell home, a great alternative is a WaterFurnace geothermal products. It's a smart move compared to the inefficient fossil-fueled furnaces on the market. No combustion means, no combustible gasses and venting is required. Plus, our units usually use the existing electrical connection you already possess to provide comfortable conditioning to your IA home. Nearly all homes can instantly enjoy the full effect one of our geothermal systems can provide. You do need to have ductwork previously installed. If this is not the case, we can easily take care of this problem by having the required ductwork installed by our professional staff. Other options to consider are... Radiant in-floor heating - Gone are the mornings of walking on cold tile Water heating - Adding this great add-on will heat your water year-round Just think of it - comfortable heating, warm floors, and hot water; all while saving you money and the environment at the same time. Check out the savings calculator to see how much you can save by switching to a geothermal system!