Save Money with Geothermal Free energy is waiting to be used and it's only several feet underneath the surface of your backyard. What are you waiting for? A WaterFurnace geothermal system retrieves an amazing five units of energy for each electrical unit of energy used. Not quite sure what that means to you? What you get is an proficient means to condition your Oswego home - much less than what your friends and neighbors will pay. The geothermal products we install are the most dynamic equipment in the industry today. So why not use the clean, renewable energy in your backyard and realize savings up to 70% on heating, cooling, and even hot water!