We receive a lot of phone calls asking the age of a piece of equipment. In the past, you had to have a “secret decoder ring” to determine the age of a piece of equipmnet since the month and year were in the letters found in our serial numbers. Now we have gone to a system where the year of manufacture is visible but, you still need to understand the way is appears in the the whole serial number.

Predator® Model Number Nomenclature 3 to 12.5 Ton Single Package Additional Options. Johnson Controls Unitary Products 335691-YSD-C-0509 COOLING PERFORMANCE. York Serial Numbers ID FROM HISTORY TO OCTOBER 2004. Shararat Serial Downloads. NEW SERIAL NUMBER NOMENCLATURE Position # 3 Date Code. Serial Number Chart.xls. York Serial Numbers ID FROM HISTORY TO OCTOBER 2004. NEW SERIAL NUMBER NOMENCLATURE Position # 3 Date Code. Serial Number Chart.xls. Product and Serial Number Nomenclature. LATITUDE & LX PRODUCT NOMENCLATURE T C G D 36 S 2 1 S 1 A T Brand G = Guardian T = Branded Y = York.

I have attached a file that you can open and print out and keeep handy that will show you how ro read both our old and currect serial numbers. This is your “secret decoder ring”. Just “ click” on the link below to open the information. Patch Custom Maid 3d Gameplay.

Keep in mind, that some letters repeat over the years so if you have any questions, please do not hesitate to contact your Technical Assistance person for help. About yorkcentraltechtalk I have been in the HVAC industry most of my life. I worked 25 years for contractors on anything from residential to large commercial boilers and power burners.

For the past 23+ years I had been employed by York International UPG Division ( a division of Johnson Controls) as a Technical support/Service Manager but I am now retired. One of my goals has always been to 'educate' dealers and contractors. The reason for starting this blog was to share some knowledge, thoughts, ideas, etc with anyone who takes the time to read it. The contents of this blog are my own opinions, thoughts, experiences and should not be construed as those of Johnson Controls York UPG in any way. I hope you find this a help.