Rose City Looks to Us for Geothermal Heating & Cooling! We're Nicholson Heating & Cooling. And we're known throughout Rose City, Michigan, for our geothermal heating and cooling expertise. Homeowners turn to us for ... superior geothermal system installation and service qualified, highly trained personnel who know every detail of geothermal heating and cooling - and know how to help you understand geothermal systems from one of the industry's most credible names - WaterFurnace advice on how to maximize the potential from their geothermal heating and cooling installation Obviously, a pivotal reason people look to us to begin with is for the savings they can get on their energy bills with a geothermal system. Want a snap shot? Give our Geothermal Savings Calculator a go. Then push forward with the next step and contact Nicholson Heating & Cooling. We'll walk you through more of what makes geothermal systems the top choice for year-round heating and cooling comfort in Rose City.