Cooling Coil Heating Exchanger Copper Tube circles Aluminun Fins The features of heating cooling coil Heating Cooling coils and cooling fluid coils are ideally suitable for chilled water, brine, freon, ammonia, glycol and other refrigerants. Heating Cooling coils are constructed by Tubes: Copper, brass, cupronickel, carbon steel, aluminum or stainless steel, Fins: Aluminum, copper, carbon steel, ...