If the evaporator coil on your Avantco open-air merchandiser is broken or no longer working properly, be sure to replace it immediately with this Avantco 18935174 evaporator coil for MCAC-36 units. This part is critical to a fully functioning refrigeration unit, as it is the part of the system where the refrigerant absorbs heat and creates the cold air that is keeping your products at a cool temperature. A damaged evaporator coil can cause higher energy use, pressure and temperature, along with frost and ice buildup, so don't delay!