Why Geothermal Use what's already there - free & renewable surplus of energy 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 determining that geothermal heating and cooling is more efficient than well-known residential systems, it only makes sense. Environmentally friendly - The EPA determined that geothermal energy is the most eco-friendly heating and cooling system in the industry today. Cost-effective - State, Federal and local government and utilities offer many tax incentives 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 save you more money, smarter, and greener. Want to know the amount of money a geothermal system in Atlanta, GA can save you in energy costs? Check out our geothermal savings calculator and learn more!