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Williamson Thermo-Flo – How to determine the age or manufacture date

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

 

This page was last updated:  8 August 2009

 

Williamson Thermo-Flo

Manufactured By: Weil-McLain

 

Weil-McLain used CP numbers to identify the date of manufacture of its HVAC units.  The only way I have found to decipher their coding is to call or email Weil-McLain.

 

Phone:  (219) 879-5661 or (866) 783-9276 ask for Technical Services