Kyle Kubs Posted July 1, 2007 Report Share Posted July 1, 2007 I don't see many of this brand around here. Looking through the list that Mike was so kind to post I see Fedders there but it seems to pertain more to A/C then furnaces, I think... Anyway the serial # format just doesn't match up. First it says age (through 1977) - Does that mean they stopped making them in 77? Then it says the last two Letters of the serial # are month and year according to a code with A being 1966 and then going up the alphabet... (skipping I) The serial # on this one starts with letters ARM and then has only numbers 75812 - Looks to be around 1981 but I would like to be sure. Quote Link to comment Share on other sites More sharing options...
charlieb Posted July 2, 2007 Report Share Posted July 2, 2007 Happy hunting. Download Attachment: acdata.pdf 38.26 KB Download Attachment: HVAC Manufacture dates.doc 34.8 KB Quote Link to comment Share on other sites More sharing options...
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