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: 26 July 2009
Evcon (1992 – Present)
Serial Number format: 030085622
(This serial number is fictitious).
Using the first, second, third and fourth digits of the serial number 030085622 you will find the month and year of manufacture. This unit was manufactured in March of 2000.
Month of manufacture: 030085622
Year of manufacture: 030085622
Evcon (Prior to 1992)
Serial Number format: 910385622
(This serial number is fictitious).
Using the first, second, third and fourth digits of the serial number 910385622 you will find the year and month of manufacture. This unit was manufactured in March of 1991.
Year of manufacture: 910385622
Month of manufacture: 910385622