Furnaces & AC / Janitrol

How old is my Janitrol HVAC unit?

JanitrolChange
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Where to find the serial number

Rating label on the outdoor AC cabinet
Close-up of a rating label showing the serial numberLook for “Serial” or “S/N” near the service connections

Janitrol serial formats we can read

Dark = year, orange = month or week.

Numeric year/month

9704011000

April 1997.

Coverage and sources

Supports the 10-digit Goodman-family year/month layout only. Older Amana/Janitrol layouts and Daikin-made PTAC letter codes are excluded.

References checked 2026-10-26.

Independent reference tool, unaffiliated with Janitrol. Sources & method