Save Money with Geothermal You already own the property - why not utilize the free energy source just below the surface of your yard? A WaterFurnace geothermal system can deliver an amazing five units of energy for every one unit of electrical energy used. Not quite sure what that means to you? What you get is an economical means to condition your West Chester home - much less than what your friends and neighbors will pay. The geothermal products we install are the most economical equipment in the industry today. So why not use the clean, renewable energy in your backyard and get your savings up to 70% on heating, cooling, and even hot water!