Bel Air Looks to Us for Geothermal Heating & Cooling! We're Advanced Heating & Cooling, LLC. And we're distinguished throughout Bel Air, Maryland, for our geothermal heating and cooling expertise. Residents turn to us for ... superior geothermal system installation and service experienced, highly trained personnel who know every aspect of geothermal heating and cooling - and know how to help you understand geothermal systems from one of the industry's most reliable names - WaterFurnace advice on how to get the most from their geothermal heating and cooling installation Obviously, a significant reason people turn to us in the first place is for the savings they can get on their energy bills with a geothermal system. Want a preview? Give our Geothermal Savings Calculator a go. Then take the next step and contact Advanced Heating & Cooling, LLC. We'll walk you through more of what makes geothermal systems the premium choice for year-round heating and cooling comfort in Bel Air.