I am having issues “decoding” this one. The ANSI date was 1988. The furnace looked like a 1990 unit, which I think it is, however, the age I’m seeing on the Building Center page says 2008. According to that site, the week also would be 00? What gives? I’m going with the numbers after F, but wanted to see if anyone sees anything I’m not. TIA.
44th week of 1990 for certain.
Thanks, Les. Can you share where you got the info?
FWIW, here is what buildingcenter.org has listed - see Style 4: