Central Air Conditioners, Heat Pumps & Furnaces
How Old Is My York?
Type the serial number from the rating label on your York furnace, AC or heat pump to see when it was made and how much of its typical 14-year life is left.
Try an example:
Where to find the serial number on a York
On an outdoor AC or heat pump, the rating plate is on the side of the cabinet near the copper lines. On a furnace, remove the upper front door; the label is on the inside wall or the door itself.
Tip: in a dark basement or closet, take a photo of the label with your phone's flash on and zoom in on the photo.
How to read a York serial number
Late 2004 and later (10 characters)
Used 2004–today
Character 1 is the factory. Characters 2 and 4 together are the year (1 and 6 = 2016). Character 3 is the month letter: A = January ... H = August, K = September, L = October, M = November, N = December (I and J are not used). N1D6 = April 2016.
Example: N1D6653823 → April 2016
Common replacement parts for York
Always match the part to the model number on your rating label, and have gas or refrigerant work done by a licensed technician.
- York S1-02532625000 Dual Run Round Capacitor (40/5 MFD 440V)Check price on Amazon
- York S1-02529011000 Hot Surface Furnace IgniterCheck price on Amazon
Common questions about York equipment
Where is the York serial number tag on a residential split system?
Check the exterior casing on the corner post of the outdoor condenser, or behind the front removable access door on an indoor furnace or air handler.
What other brands are manufactured under York parent company Johnson Controls?
Johnson Controls manufactures York, Coleman, Luxaire, Guardian, and Fraser-Johnston, all sharing similar internal components and date formats.
How long does a York furnace, AC or heat pump last?
About 14 years on average. Units that get yearly maintenance often last longer; units in hard-water areas, coastal air or unconditioned spaces often fail sooner.
Is the serial number the same as the model number?
No. The model number describes the product line, size and options. The serial number identifies your exact unit and contains the manufacture date. Both are printed on the same rating label.
How accurate is this age estimate?
The date comes from the published serial number formats for each brand. It is the factory date, not the installation date, and some formats repeat every 10 or 20 years. If the label shows a printed MFG. DATE, that date wins.