Save Money with Geothermal Free energy is just sitting there waiting to be used and it's only several feet below the surface of your backyard. What are you waiting for? A WaterFurnace geothermal system retrieves an extraordinary five units of energy for each electrical unit of energy used. Unsure of what that means to you? What you get is an efficient means to condition your Defiance home - much less than what your friends and neighbors will pay. The geothermal products we put in your home are the most dynamic 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!