If the compressor unit on your Avantco merchandiser or display case is damaged or not working properly, be sure to replace it immediately with this Avantco 22477784 compressor for select Avantco WHAC, BHAC, and BC series units. The compressor is incredibly important, circulating the refrigerant in the system under pressure, which concentrates the heat so the whole unit does not become heated. A damaged compressor will not be able to regulate the refrigerant's flow, and as a result, the unit may no longer blow cold air. This could cause your products to become warm or go bad, and you will end up spending more money in the long run. This item includes starter components.