AO Smith Water Heaters have PEX cross-linked polymer dip tubes standard on all gas and electric models. Their unique construction makes them long-lasting and superior in resistance to destructive thermal oxidation. The function of the dip tube is to force the cold water to the bottom and allow the hot water to come out of the left side of the water heater. Since the water heater is constantly full, the dip tube ensures that the heater uses all the hot water available while any cold water in the tank is being heated.
A large selection of AO Smith products can be found at www.supplyhouse.com, including residential water heaters, commercial water heaters and replacement parts.
