We're Baltimore's Primary Geothermal Contractor! Baltimore, Maryland, homeowners have all kinds of reasons for desiring a geothermal heating and cooling system: phenomenal year-round comfort – no matter how crazy the weather variations smooth operating efficiency energy performance (They would look forever to find a more "green," more natural way to heat and cool their homes!) significant – sometimes extraordinary – savings on their energy bills premium installation and maintenance from Advanced Heating & Cooling, LLC, Baltimore's geothermal experts. Discover more about what a geothermal heating and cooling system can do to improve your family's comfort. Check out our Geothermal Savings Calculator. Then contact Advanced Heating & Cooling, LLC. We sell, install, and maintain WaterFurnace geothermal systems, the very best on the market today.