Why Geothermal Use what's already there - free & renewable store of energy 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 confirmed geothermal energy is the most environmentally conscious heating and cooling system. Or ask the U.S. National Renewable Energy Laboratory - they also concluded that geothermal energy is more economical and cost-effective than traditional residential systems. Or ask the federal, state, and local governments and utilities - they're providing 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 changing 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 eco-friendly. Want to know how much you can expect to save on your energy costs with a geothermal system in Denver, WaterFurnace ? Find out with our geothermal savings calculator!