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How old is my Trane packaged unit?

Serial number age decoder for Trane packaged rooftop and ground units: 1 format era, the decode rule in plain English, transcribed tables, and the official lookup.

Serial number decoder for Trane packaged unit

Type the serial from the data plate, not the model number. Nothing is sent anywhere; the tables are in this page.

Format example: 130313596L

Format eras

How to read the serial

2010 to present formatVERIFIED

Shape #########A · example 130313596L · confidence high

Year
digits 1-2 (YY, 2010+)
Week or month
week = digits 3-4
Plant
remaining chars include plant/line and day-of-week; not published

Example: serial 130313596L decodes to week 3 of 2013.

Trap: 2002-2009 style used a SINGLE leading year digit (Y WW ...) e.g. 91531S41F = 2009 wk15; a 10-char 2010+ serial starting with 1 can be misread as 2001-2009 style. MFR date usually printed on plate anyway.

Where the data plate is on a packaged unit

On the cabinet exterior near the electrical access panel, or inside the panel door.

General guidance, not brand-specific: the owner's manual or the installer can point to the exact spot. See the data plate guide.

Official lookup: the authority

Open the official Trane lookup takes serial number (+ last name for full certificate); returns warranty certificate; product-only info without last name; URL verified live

This site is a reference built from published tables. The manufacturer's own lookup wins whenever the two disagree.

Sources

Frequently asked questions

How do I tell the age of a Trane packaged unit from the serial number?

In the 2010 to present format the year is digits 1-2 (YY, 2010+) and the week as digits 3-4. Example: serial 130313596L decodes to week 3 of 2013.

Where is the serial number on a Trane packaged unit?

On the data plate. On the cabinet exterior near the electrical access panel, or inside the panel door.