![]() ![]() Some manufacturers make it easy to determine the age of your heater by including the month and year built into the first 4 digits of the serial number. Preceding 2009 YY.How do I determine the age of my water heater?Īll water heaters, no matter the brand, must be equipped with a rating plate that lists important data such as the model and serial numbers, manufacturing company’s name, length of warranty, and more. The year of production for Rinnai water heaters is in serial numbers.Ģ009 or eventually Y7. Tankless YY.77-777777 (First and Second digits after an alphabet of serial numbers refer to the year of production) Rinnai X77YYX7777777777X (Third and Fourth digits following an alphabet of serial numbers refer to the year of production) The year of production for Rheem/Ruud water heater is in serial numbers. The year of production for Navien water heaters gets recorded within the serial numbers.ħ777XYY77777777 (Fifth and Sixth digits following an alphabet of serial numbers refer to the year of production)ħ777XYYX7777777 (Fifth and Sixth digits following an alphabet of serial numbers refer to the year of production)ħ777-YYYY7777-7777 (Fifth, Sixth, Seventh, and Eighth digits of serial numbers refer to the year of production)ħ777-YYYY-777-7777 (Fifth, Sixth, Seventh, and Eighth digits of serial numbers refer to the year of production) Rheem/Ruud Gas models: GENG 77YYX77777 (Third and Fourth digits of serial numbers refer to the year of production) Navien XX77YY777777 (Third and Fourth digits of serial numbers refer to the year of production) The year of production for General Electric water heaters gets recorded within the serial numbers.ħ7YY000000 (Third and Fourth digits of serial numbers refer to the year of production) YY7777777 (First and Second digits of serial numbers refer to the year of production) General Electric (GE) The year of production for Craft master water heaters is recorded in their serial numbers. The year of production for Bradford White water heaters gets recorded within the serial numbers. Y= Year of Manufacture X= Letter 7= Numbers XYYX77777 (First and Second digits of serial numbers refer to the year of production) Bradford White The year of Apollo water heaters' production is recorded within the serial numbers. Y=Year of Manufacture X= Letter 7= Numbers Note: Old heaters might hold added alphabets preceding the first and second digits Apollo YY77777777777 (First and Second digits of serial numbers refer to the year of production) YY777 77777 (First and Second digits of serial numbers refer to the year of production) ![]() YY77X7777777 (First and Second digits of serial numbers refer to the year of production) ![]() The production date for AO Smith water heaters gets recorded in serial numbers. Y= Year of Manufacture X= Letter 7=Numbers This article discusses how to identify the age of your water heater. Still, fortunately, the year of production is often included within the serial number. Regrettably, many producers of water heaters do not explicitly specify the manufacturing year on the data label or plate. This article is an easy reference guide to the most common producers of water heaters. ![]()
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