Chilled Water Coil (Hot Water And Steam Coil), Chilled water coils also known as hydronic cooling coils are typically used to cool or remove moisture from air streams. The air to be cooled moves through the fins, and either water or an ethylene or propylene glycol solution move through the tubes.Chilled water, Hot water and steam coils for all commercial and Industrial applications. Coils with & 3/8 tubes are manufactured by us. Mechanically extended copper tubes for high heat transfer. The casing and end sheets are available in GI/SS. Aluminum foils, for fins, is available in original aluminum /blue color with or without hydrophilic coating. All coils are tested for leakage at 25 kgs/cm2 in the water tank.