Within this string of letters and numerals, you should find an even, two-digit number.
The model number will be four letters, a dash, and then six more characters while the serial number is ten characters long.įind the model number. Locate the model and serial number label inside the cabinet of the furnace. Where is the model number on a York Furnace? At the top of the nameplate, you should see the manufacture’s date like a month and year. The nameplate lists the manufacturer’s specifications on it. Look on the back side, the side facing toward the house, and you should find a nameplate. The first step is to go to the outdoor cabinet of the heat pump. How can I tell the age of a York air conditioner or furnace from the serial number? For York systems manufactured from October 2004 to the present, the first and third characters in the serial number will be letters, and the second and fourth characters will be numbers that indicate the year of manufacture. The first pair of numbers is the year, and the second pair of numbers is the week. In the serial number, the first letter is the place of manufacturer.
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