So the manufacturer's data plate below indicates that it was made in 1985 From 1964 through 1979 Bryant encoded age information in the serial number with the first two digits indicating week of manufacture and the letter following those first two numbers indicating the year beginning R = 1964: = 1964 = 1965 = 196 If you've got a Ruud reliable water heater, all you need to know is your heater's serial number. How do I tell the age of a Ruud water heater from the serial number? Tuesday, SeptemThe third and fourth numbers in the serial number, usually after several letters, is the year of manufacture of a Ruud water heater. The first two numbers after it are the week of manufacture, and the third and fourth numbers after the letter are the year of manufacture Serial number styles/formats found are: →Style 1: D 11 14 A441408265 How can I tell the age of a Ruud air conditioner or furnace from the serial number? Saturday, JFind the letter in the middle of the serial number. The date of production/manufacture or age of Rheem-Ruud® Water Heater(s) can be determined from the serial number. Serial number styles/formats found are: →Style 1: 09 04 B21710 (Serial Number begins with a prefix between one to four letters in length - i.e. The date of production/manufacture or age of Rheem® Water Heater(s) can be determined from the serial number.
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