Why Geothermal Free & renewable source of energy - It's already there just waiting to be used It's hard to get much greener than WaterFurnace. The best alternative to heat and cool your home or business, geothermal is... Efficient - With the U.S. National Renewable Energy Laboratory concluding that geothermal heating and cooling is more efficient than traditional residential systems, it only makes sense. Eco-friendly - The EPA determined that geothermal energy is the most eco-friendly heating and cooling system on the market today. Cost-effective - State, Federal and local government and utilities provide many tax breaks and discounts that makes your investment in geothermal a wise choice. Still not satisfied? You can ask your neighbors - more and more people are switching to geothermal and love it! Energy and cost savings will vary by region and the type of system geothermal is replacing, but geothermal will always be more cost effective, wiser, and environmentally friendly. Want to know the amount of money a geothermal system in Mitchell, South Dakota can save you in energy costs? Check out our geothermal savings calculator and learn more!