Why Geothermal Use what's already there - free & renewable store 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 concluding 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 Earth 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 well-informed choice. Still not convinced? You can talk to 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 environmentally friendly. By using our savings calculator, you can discover how much a geothermal system in the West Chester, PA will cut your energy costs.