This Avantco 17814285 evaporator coil is a direct replacement for the one that came standard on your Avantco UDD-4-CT series dispenser. An essential part of any refrigeration system, the evaporator coil runs refrigerant through a coiled frame, absorbing heat from the interior of the unit and cooling it down. It can be used to quickly and easily replace a broken coil, minimizing downtime.