Uploading: EA2AAF76-1AAD-4D25-85B7-A659E84B5F97.png… Uploading: 5F71D3E1-FBF5-47E7-8EA8-C608DB953E87.png…
Looks to be Pre 1974.
1 Like
The G9 Furnaces were made from '69 to '72. You have to call Lennox to see the exact year. (800) 953-6669. You can also submit the info at aircomfortexperts they have antique manuals, they will know too.
age: beyond EOL