Assist needed on age of unit

287 Jersey 002.JPGAny help would be greatly appreciated as to the age/ year of manufacture of this FHA unit. Data plate names Heil, cabinet names Whirlpool. Also, is there a definitive guide out there that lists manufacturers and ages?
Model NUGI1150AK01
Serial H521 73921

287 Jersey 002.JPG


it’s either an 84 or 85

BTW be carefull of those NUGI models I’ve heard they get painfull :smiley:



Curtosy of Greg Bell from another thread. Make a copy of this and you will never have to ask for ages again.

Thank you Doug Edwards & Greg Bell (Video clip was fantastic Greg) I’ve always appreciated your humor Gerry!

May 1985.