This Avantco 17818766 evaporator coil is a perfect replacement for the one that came with select Avantco UDD and UBB series beer dispensers and bar refrigerators! 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.