Why Geothermal Free & renewable source of energy - It's already there begging to be used It's not easy 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 conventional residential systems, it only makes sense. Environmentally 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 offer many tax breaks and discounts that makes your investment in geothermal a reasonable choice. Still not convinced? 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 the type of system geothermal is replacing, but geothermal will always be more cost effective, smarter, and greener. Want to know how much a geothermal system in Cape Cod, MA can save you in energy costs? Check out our geothermal savings calculator and learn more!