Williamson ThermoFlo – 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: 10 August 2010
Williamson ThermoFlo
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Williamson ThermoFlo uses CP numbers to identify the date of manufacture of their HVAC units. The only way I have found to decipher their coding is to call Williamson ThermoFlo directly.
Phone: (800) 736-2378 or (800) 736-BEST.
