How to read Goodman, Amana and Janitrol serial numbers
This covers Goodman, Amana, Janitrol. The serial number is on the rating plate on the unit.
Reading it yourself
Ten digits. The first two are the year and the next two are the month.
Example:
9709088872was made in September 1997.
This is the date the unit was made. It was usually installed soon after, but it can be later. If a serial doesn’t fit any of these patterns, look on the label for a printed manufacture date.
Sources
Checked in October 2026.
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