Why Geothermal Use the existing surplus of free & renewable energy just beneath the surface Geothermal energy is the smarter way to heat and cool your home or business - it's efficient, cost-effective, and environmentally friendly. It's hard to get much greener than with WaterFurnace. Just ask the EPA — they determined geothermal energy is the most environmentally conscious heating and cooling system. Or ask the U.S. National Renewable Energy Laboratory - they also confirmed that geothermal energy is more economical and inexpensive than classic residential systems. Or ask the federal, state, and local governments and utilities - they're offering many rebates and tax incentives that will go hand in hand with your investment in geothermal. Or, most importantly, 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 depend on the type of old system your new geothermal is replacing. However, geothermal will always be the best option, cheaper and environmentally friendly. How much can a geothermal system in the Wilmington, NC area save you in energy costs? Use our geothermal savings calculator to find out!