Santa Claus Geothermal Heating & Cooling Contractor In Santa Claus, Indiana, the geothermal heating and cooling contractor to call is Hulsman Refrigeration, Inc.. Our geothermal knowledge is second to none. And we offer the finest products available in Santa Claus - or anywhere else, for that matter: WaterFurnace geothermal heating and cooling systems! Try our Geothermal Savings Calculator. It'll show you the best reason for going geothermal. The monthly savings are big! We can tell 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 Hulsman Refrigeration, Inc. today.