Help with age of this old Carrier please

[bcawhern1 (Brian Cawhern, CMI)]

This is an old cooling only RTU. I am thinking 1989 . 15 ton

[ruecker (Ryan Uecker)]

In the 70s’ and 80s’ Carrier frequently used the letter and first numerical digit format for month/year. So I would say 1988 is a possibility.

[bcawhern1 (Brian Cawhern, CMI)]

@ruecker

In the 70s’ and 80s’ Carrier frequently used the letter and first numerical digit format for month/year…

I think you are right and it aligns with some other equipment I found in the building. Thanks!

[rlewis5 (Roy Lewis, CERTIFIED MASTER INSPECTOR)]

Yep! 1988…

[bcawhern1 (Brian Cawhern, CMI)]

Thank you for looking that up @rlewis5

[rlewis5 (Roy Lewis, CERTIFIED MASTER INSPECTOR)]

Here is page 2 if you ever need it.

[mcyr (Marcel Cyr, CMI)]

Brian, did you look at this?

EquipmentModelNumberGuide.pdf

[bcawhern1 (Brian Cawhern, CMI)]

@mcyr

Brian, did you look at this?..

Yes sir I did and thank you. It was helpful in converting the tonnage code. And it directed me to the 1980’s with the first letter coding. Then I got stuck.