Save Money with Geothermal Why not utilize the free energy located just a few feet beneath the surface of your own property? A WaterFurnace geothermal system can use one unit of electrical energy to generate an phenomenal five units of energy. But what does that mean for you? It means you can condition your Abilene home for far less than your neighbors and friends. The equipment we put in your home is the most economical geothermal products in the industry today. Homeowners can actually get savings up to 70% for heating, cooling, and hot water!