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    American Standard® HVAC Age Checker

    Enter your American Standard serial number below to determine the manufacturing year of your HVAC system

    The serial number is usually found on a label on your HVAC unit

    Add model number for AI-powered specs including tonnage, SEER rating, and features

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    How to Find Your Serial Number

    Your American Standard serial number can typically be found on:

    • A metal nameplate on the outdoor unit
    • Inside the blower compartment door of the furnace
    • On your original installation paperwork

    American Standard Serial Number Formats

    Note: American Standard and Trane are sister brands (both owned by Trane Technologies) and use the same serial number formats.

    Style 1 (2002-Present)

    Example: 91531S41F or 10161KEDAA - Modern format with year and week

    Style 2 (1983-2001)

    Example: R1742DWBF - 9 characters starting with year letter

    Style 3 (1970s+)

    Example: A92M07217 - Letter + 2-digit year + month letter

    Style 4 (1980-1982)

    Example: 123456T or B123456 - Letter at first or last position

    Style 5 (1971-1979)

    Example: 2D-1234 - Digit + letter + dash format

    Style 6 (1980-1982)

    Example: H011870M03 - Year letter 3rd from last

    Style 7 (1970s-1990s)

    Example: F91-90391 - Letter + 2 digits + hyphen (8 chars)