We're the Geothermal Source in Hampstead! Hampstead homeowners in the know turn to Advanced Heating & Cooling, LLC for all their geothermal heating and cooling needs. They count on us to give not only the proper installation and service but also the experience to help them maximize the potential from their geothermal systems. Thinking about a geothermal system of your own? Give our nifty little Geothermal Savings Calculator a whirl. Just enter your data and stand in awe of the results. Then, contact us, the Hampstead, Maryland, geothermal experts at Advanced Heating & Cooling, LLC.