WILLIAMSON Date of Manufacture

How to determine the date of production/manufacture or age of a WILLIAMSON® brand HVAC Systems.


The date of production/manufacture or age of an WILLIAMSON® brand HVAC system can be determined from the manufacture date located on the data plate.

Serial Number Styles found are:

Style 1:  CP 5160092

Style 2:  7302764

WILLIAMSON 2008 Recall







Every effort is undertaken to offer you correct and concise information to assist you in determining the age or manufacture date of HVAC equipment.  Anytime anyone is dealing with numbers and letters in determining data, mistakes and misinterpretation are bound to happen.  For this reason if you find during your research that we may have erred please contact us.  In addition perhaps you have come across a brand, model or serial number format that we have not addressed.  Email us information or pictures of data/nomenclature plates of the unit and we will attempt to assist you in your determinations.  Email