This Avantco 17831049 compressor is a direct replacement for the one that came with select Avantco DLC, SS, HBB series units. It is a vital part of your unit's refrigeration system, working with the other components to help your unit dissipate heat and keep the cabinet set to the right temperature. A broken or malfunctioning compressor can prevent your unit from maintaining specifications and cause strain on other components, so be sure to replace it promptly. This item includes starter components.