Save Money with Geothermal Why not maximize the readily available energy located just a few feet underneath the surface of your own property? A WaterFurnace geothermal system can utilize one unit of electrical energy to generate an incredible five units of energy. Not quite sure what that means to you? What you get is an economical means to condition your Columbus, Ohio home - much less than what your friends and neighbors will pay. The geothermal products we install are the most efficient equipment in the industry today. So why not utilize the clean, renewable energy in your backyard and grab a hold of savings up to 70% on heating, cooling, and even hot water!