Spaces and dashes are accepted. Check O/0 and I/1, and keep any leading zeros.
Checks ENERGY STAR model records and searches manuals separately from the serial. Certification records do not establish this unit’s manufacture date.
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 WeatherKing lookup & label guide · Manuals+