Why Geothermal Free & renewable source of energy - It's already there just waiting 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 traditional residential systems, it only makes sense. Eco-friendly - The EPA determined that geothermal energy is the most Earth friendly heating and cooling system on the market today. Cost-effective - State, Federal and local government and utilities provide many tax breaks and reductions that makes your investment in geothermal a wise 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, wiser, and greener. By using our savings calculator, you can discover how much a geothermal system in the Baltimore, Maryland will cut your energy costs.