About

AgeFromLabel is a free tool for homeowners, home buyers, inspectors and technicians. You pick the brand, type the serial number from the data plate, and get the manufacture date with a plain explanation of how it was read.

The date rules differ from one manufacturer to the next and change over the years. Getting them right is the whole job, so every rule is sourced and tested. See how we decode.

AgeFromLabel is independent. It is not a manufacturer, a contractor or a sales page, and it is not affiliated with or endorsed by any manufacturer. Brand names are used only to identify equipment.

Found a serial we can't read, or a date that looks wrong? Tell us.