Save Money with Geothermal You already purchased your property - why not use 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. Unsure of what that means to you? What you get is an efficient means to condition your Kalkaska home - much less than what your friends and neighbors will pay. The geothermal products we install are the most proficient equipment on the market today. So why not utilize the clean, renewable energy in your backyard and grab a hold of savings up to 70% on heating, cooling, and even hot water!