Comfort Maker Heat Pump Age

Fellow Inspectors,

I have an age question on these units.
Exterior serial # 85397020M-030303
Interior Model# HR 811024C, Serial# 0000602200M110108
House is 23 years old and they look original



I believe the first one is the 39th week of 1985.

The second one is interesting. I’m not totally sure but without further research, which I won’t have time to do for a few days due to business, I would make an educated guess for 2001, either March or November.

Thanks Russel