Companies use service numbers on appliances to help identify the appliance, determine its year of manufacture and to maintain inventory. A service number provides additional information about a product for maintenance, replacement or for compatible parts.
The serial number of an appliance helps engineers determine the specific model of appliance to repair or maintain it. Usually located at the back, side or bottom of appliances, this numeric or alphanumeric code is unique to each brand and narrows down the individual appliance to its year or month of manufacture and batch number. A serial number helps users access specific product manuals and is also beneficial for manufacturers and dealers to process warranty claims.