The purpose of a refrigerator's manufacture date is to confirm when it was made. The year, make and model of the refrigerator are necessary when ordering replacement parts for repair.
Knowing the age of the refrigerator aides the owner in determining if repairs are covered under any warranty included with the purchase of the refrigerator or purchased separately. The age of the refrigerator can also be an indicator of whether or not it is an energy efficient model, which are less costly to operate than older appliances.
The date of manufacture can usually be found in the serial or model number, typically located on a small metal plate affixed to the back of the machine.