Hopewell Geothermal Heating & Cooling Contractor In Hopewell, New Jersey, the geothermal heating and cooling contractor to call is CMS Geothermal. Our geothermal expertise is second to none. And we offer the best products available in Hopewell - or anywhere else, for that matter: WaterFurnace geothermal heating and cooling systems! Take a look at our Geothermal Savings Calculator. It'll tell you the best reason for going geothermal. The monthly savings are huge! We can explain to you plenty of other good reasons, too. And when you’re ready install? We'll make sure that your WaterFurnace geothermal heating and cooling system is installed - and serviced – right! Contact CMS Geothermal today.