Monogram describes two leading letters, six digits and sometimes a final letter. Copy the complete serial; keep the separately printed model, which typically begins Z or U, for manual search.
Checks ENERGY STAR model records and searches manuals separately from the serial. Certification records do not establish this unit’s manufacture date.
The model is a separate label field. A few exactly verified GE model families can narrow repeating years using GE’s production windows; other models keep all supported date candidates.
Choose a system only when it matches the product family and its documentation. A purchase year or a manual’s publication date does not establish a manufacturing date.
Full Monogram lookup & label guide · Manuals+