Locate the Serial Number Plate
The plate or sticker that contains the serial number on your Whirlpool dryer is on the dryer itself. Depending on the model of your dryer, the serial number might be situated on the door jamb, on the side of the cabinet or on the rear of the dryer.
Serial Number Plate Information
The serial number plate or sticker contains several pieces of information pertaining to your dryer. In addition to the serial number, the plate or sticker also contains the name of the manufacturer (Whirlpool), the dryer's model number, and often information pertaining to the location of assembly and the dryer's power requirements.
Serial Number Characters
As with all Whirlpool appliances, the second character in the serial number indicates the year in which the dryer was manufactured. If the second character is a number, the dryer was manufactured prior to 1990. If the second character is a letter, the dryer was manufactured after 1989. To determine the exact age of the dryer, visit the Appliance Repair Blog "Whirlpool Appliance Age Serial Number Decoder" and match the code to the age in the chart provided.
Determining the Age of Your Dryer
To determine the age of your Whirlpool dryer, subtract the current year from the year in which the dryer was manufactured. For example, in 2011, a Whirlpool dryer with a serial number beginning with "CR," which was manufactured in 2004, is seven years old.