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