How old is my A.O. Smith Water Heater?
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A.O. Smith Water Heater Serial # Format 1: L07A0711460 Serial # Format 2: AJ89123456 Manufactured by A.O. Smith Water Products
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Format 1: Using the serial number locate the first through third digits. i.e. L07A0711460
The first digit is the month of manufacture. (A=January; B=February; C=March; D=April; E=May; F=June; G=July; H=August; I was not used; J=September; K=October; L=November; and M=December.). The second and third digits are the year of manufacture. Using this sample serial number. The unit was manufactured in November, 2007.
Format 2: Using the serial number locate the second through fourth digits. i.e. AJ8912356 The second digit is the month of manufacture (A=January; B=February; C=March; D=April; E=May; F=June; G=July; H=August; I was not used; J=September; K=October; L=November; and M=December.). The third and fourth digits are the year of manufacture. Using this sample serial number. The unit was manufactured in September, 1989. |
