Data plate is on the side panel of outdoor units, or inside the cabinet door for furnaces.
Serial number format is identical to Trane — two digit year code + month letter.
Decoded examples
17H5B1234567
→ 2017, August
17 = 1997 or 2017, H = August
12D3A9876543
→ 2012, April
12 = 1992 or 2012, D = April
Life expectancy
Expected lifespan: 15–20 years. American Standard is a premium brand equivalent to Trane.
Common questions
Yes. American Standard and Trane are both manufactured by Trane Technologies at the same factories. The equipment is mechanically identical with different branding. American Standard is sold through independent dealers while Trane has a more exclusive dealer network.
Use the same method as Trane — first two digits are the year code (repeating every 20 years), and the third character is the month (A=Jan through L=Dec).