gas furnace flue extremely hot

Old 09-22-11, 07:58 AM
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gas furnace flue extremely hot

I have a 15 year old Rheem Criterion furnace and noticed last night when we turned it on that the exhaust flue coming out of the draft inducer got extremely hot. Burned my finger about 36" away from the furnace. Never really noticed or paid attention to this in the past. Is this normal or do I need to pay someone to come out and take a look?

Old 09-22-11, 04:29 PM
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Hard to say without knowing the actual temp of the flue. 80% efficient furnace flues can reach 350 - 400F

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