Why Geothermal Use the existing supply 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, saves you money, and environmentally friendly. It's hard to be a better steward of the natural environment 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 cost-effective than conventional residential systems. Or ask the federal, state, and local governments and utilities - they're providing many rebates and tax incentives that will only add to 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 smarter, cheaper and environmentally friendly. Want to know how much you can expect to save on your energy costs with a geothermal system in San Antonio, Southwest Mechanical Services? Find out with our geothermal savings calculator!