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11-29-2011, 10:39 PM #1
Need help decoding lennox htr age
Hi, need help with age of horizontal lennox furnace, can't find it on any internet charts.
m/n gs 1513/4x-80-3
house built in 1988
11-30-2011, 10:25 AM #2
Re: Need help decoding lennox htr age
I don't think you copied down the serial number correctly. It should be in a format like this:
51 would be the Lennox division number
87 would be the year manufactured
G would be the month code
24232 would be the serial number
Do you have a picture?