Month Decoder: A= JAN B=FEB C=MAR D= APR E=MAY F= JUNE G=JULY H= AUG J= SEPT K=OCT L= NOV M= DEC. The decoding is based on the following format (also see chart below): The year of manufacture is noted by the first letter of the serial number, the month is the second letter. The Bradford White rating plate is the most difficult to decode. Nnnn = a consecutive serial number for your individual unit AO Smith and AmericanĮx.
When did ge start using serial number stickers how to#
Read below how to determine the age of your unit.Įx.
Each manufacturer uses different formats and you need to de-code the water heater serial number.
If not, then write down your serial number as it usually indicates the year and month of manufacture of the water heater. Check to see if the installation date is noted on the sticker. This sticker is usually around any warning labels and the energy guide. You can determine how old your residential water heater is by looking at and decoding data on the water heater’s label.įirst, locate the manufacturers label with the serial number on the side of your unit.
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