Another Lennox Age?

[Jim Katen]

House built in 1966.

Horizontal furnace in the crawlspace,

Model GS11Q4 120

Serial 465863J04

The old flexible brass gas connector is dated '64, but I think it was re-used from the previous furnace.

This furnace looks, smells, and tastes like it's from 1978, but I can't resolve that with the serial number.

It doesn't really matter because the thing is ancient, but I enjoy the hunt. . .

Ideas?

[Mark P]

1977, according to Preston's Guide. 120,000 Btu

[Jim Katen]

1977, according to Preston's Guide. 120,000 Btu

Any clue how to resolve that with the serial number.

[kurt]

465863J04

4+6+5=15-8= 7

6-3=3.... Skip the J...3+0+4= 7

77

[Jim Katen]

465863J04

4+6+5=15-8= 7

6-3=3.... Skip the J...3+0+4= 7

77

Of course . . . what was I thinking?