New Castle Geothermal Heating & Cooling People in New Castle, Delaware, see why geothermal heating and cooling is the right choice, with a down economy. What’s so great about geothermal? It’s the natural, "green" way to heat and cool your home. Geothermal systems give outstanding heating and cooling comfort throughout the year. Because of its energy-efficient operation, a geothermal system will reduce your costs. Use our handy Geothermal Savings Calculator to get a good estimate of how much. Next step? Give us a call. That way, you can be confident that you are getting the very best geothermal installation and service in New Castle. You can be confident, too, of getting the finest geothermal system - from WaterFurnace, the industry leader. Contact J. Zanes LLC today.