Age of furnace?

[mnicholet (Mark Nicholet, Licence # 65349)]

Lennox

M/N G20Q2E-75-4

S/N 5896A 36571

Thanks

[dhadler (Darrell B. Hadler)]

1996…3rd and 4th number in serial #

[bkelly2 (Brian Kelly, AZ Cert. # 60234)]

How about this package unit???

[tdeehan (Tom Deehan)]

Looks like 1986 maybe :mrgreen: