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: 24 July 2009
Airease
Your model and serial number will be located on a sticker attached to an exterior panel on most air conditioning products or located on an inside panel on most furnaces. Your model number will resemble a series of letters and number, i.e. (SCU10E36A-1A or G1D93AU100D20-1A). Your serial number will resemble one of the following examples: 15A67JA098, C89274AAC, or 8495A12345.
Serial Number format: 1602J39640
(This serial number was transcribed from an actual unit during a home inspection).
Using the third, fourth and fifth digits of the serial number 1602J39640 you will find the year and month of manufacture. The third and fourth digits are the year and the fifth digit (always a letter) is the month of manufacture. This unit was manufactured in September, 2002.
Year of manufacture: 1602J39640
Month of manufacture: 1602J39640
Use the following chart to determine month.
A = January
B = February
C = March
D = April
E = May
F = June
G = July
H = August
“I” was not used.
J = September
K = October
L = November
M = December