St. Mary Geothermal Heating & Cooling Contractor In St. Mary, Missouri, the geothermal heating and cooling contractor to call is Schumer Bros Inc.. Our geothermal knowledge is second to none. And we offer the finest products on the market in St. Mary - or anywhere else, for that matter: WaterFurnace geothermal heating and cooling systems! Try our Geothermal Savings Calculator. It'll show you why so many homeowners are 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 see to it that your WaterFurnace geothermal heating and cooling system is installed - and serviced – right! Contact Schumer Bros Inc. today.