How old is my Centurion generator?
Serial number age decoder for Centurion standby and portable generators: 1 format era, the decode rule in plain English, transcribed tables, and the official lookup.
Format eras
- era not stated UNSOURCED
no date in serial
How to read the serial
era not stated formatUNSOURCED
Listed under Generac in the source; Centurion is named in that format's family and the corporate link is an estimate, not a checked fact.
Where the data plate is on a generator
Standby units: a plate inside the enclosure or on the frame near the controller. Portables: a sticker on the frame or engine housing.
General guidance, not brand-specific: the owner's manual or the installer can point to the exact spot. See the data plate guide.
For scale only: the InterNACHI Standard Estimated Life Expectancy Chart for Homes lists Residential Propane Backup Generators at 12 years of expected service (nachi.org). That chart is a guideline, not a prediction for your unit.
Open the official Generac lookup takes serial or model; returns specs, manuals, FAQs (NOT a date); URL verified live
This site is a reference built from published tables. The manufacturer's own lookup wins whenever the two disagree.
What we could not confirm
- The era not stated format has no source we could check; it is shown for completeness only.
- The era not stated format is documented but not decodable here: no pattern (no date encoded, or format unknown).
- Centurion is treated as sharing Generac's format because the source lists it in that family; the corporate relationship itself is an estimate.
- No official online lookup URL was verified for Centurion.