Age please

Does anyone have a way to figure age on this Lennox heat pump? If you have a document like water heaters could you please share?

heat 1.jpg

June of '07

Thank you Mark, is that from the serial “6007”?

Karl, I get June of 2007 from the info I have.

First two=plant, second 2=year, letter is month A-M without using I

Thank you Michael, that gives me something to use later. I almost never see these here. A/C is open a window.:slight_smile: