About AGL Services Heating & Air Conditioning Charleston's Premier Geothermal Source If you are looking for a company that is a one-stop shop for all your WaterFurnace Charleston geothermal heating and cooling requirements, you can depend on AGL Services Heating & Air Conditioning to provide you with all this including... planning assistance. complete comfort system installation. routine service and maintenance. emergency repair. energy-saving advice and consultation. Our fully trained professional staff is committed to the overall satisfaction of customers throughout the Charleston area. After all, you've chosen the premium heating and cooling system available. We make certain each system continues to live up to the expectations of, boosting your home's conditioning efficiency and helping you reduce energy costs. Contact AGL Services Heating & Air Conditioning today to get a free estimate and a cost savings analysis for your home.