Profile: HVAC Brain Inc. specializes in providing HVAC products & geothermal systems. HVAC coils are many types of coils for different applications. Our products include heating, condenser, steam, industrial, and booster coils. There are many sizes to choose from. Cased booster coils are stock water coils for heating & cooling applications with 0.008 corrugated aluminum plate fins, 5/8 O.D., smooth wall copper tubes, 0.02 mm tube wall thickness, and 16 gauge galvanized steel casings. All RAE booster coils are pressure tested, and meet ARI certified performance.