Republic® – How to determine the age or manufacture date

– How to determine the age or manufacture date

This page was last updated:  24 July 2009


Republic® – Present Day

Serial Number format:  DC5D702F280123456

(This serial number is fictitious).


Using the four digits located after the last letter in the serial number (usually an “F” or “M” located in the center or 8th digit of the serial number) DC5D702F280123456 you will find the week and year of manufacture.  The first two digits are the week of manufacture and the last two digits are the year.  This unit was manufactured in the 28th week of 2001.


Week of manufacture:  DC5D702F280123456

Year of manufacture:  DC5D702F280123456


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