Save Money with Geothermal You already own the property - why not use the readily available energy source just underneath the surface of your yard? A WaterFurnace geothermal system can transmit an astounding five units of energy for every one unit of electrical energy used. Still not convinced? Look at it this way. You condition your Columbia home with free energy - for far less than your neighbors using conventional heating and cooling means. We install geothermal products that utilize that free, clean energy lying in your backyard. Grab a hold of savings up to 70% on heating and cooling your home - you can even heat your water for no cost during the summer!