Save Money with Geothermal Why not maximize the free energy located just a few feet beneath 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. Still not convinced? Look at it this way. You condition your Cape Cod home with free energy - for far less than your neighbors using conventional heating and cooling procedures. We install geothermal products that make use of that free, clean energy lying in your backyard. Realize savings up to 70% on heating and cooling your home - you can even heat your water for free during the summer!