Save Money with Geothermal You already own the property - why not utilize the readily available energy source just below the surface of your yard? A WaterFurnace geothermal system can broadcast a staggering 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 Las Cruces home - much less than what your friends and neighbors will pay. The geothermal products we install are the most dynamic equipment in the industry today. So why not utilize the clean, renewable energy in your backyard and realize savings up to 70% on heating, cooling, and even hot water!