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Old 12-04-2009, 06:44 PM   #1
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Furnace vent pipe

I noticed water dripping from the furnace vent pipe onto the basement floor. The 3" pipe comes out and then goes up and over the furnace duct and makes a 90 degree turn before going out the side of the house. The 90 joint is leaking at the seem. I think I can try and replace by cutting this part part out and then installing a new section and connecting it via two couplings.

My concern is the couplings. I doubt there is play to move the remaining into the new slip coupling. Any suggestions?


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Old 12-04-2009, 09:09 PM   #2
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Do you meen that after you cut it there will not be enough pipe left to slide into the coulping? If that is the case then you may need to replace a larger section and get enough pipe to slide in.


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Old 12-04-2009, 09:16 PM   #3
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Not enough movement in pipe

Once I cut the bad section out, I think I can get one end via a slip coupling. I doubt I can get a slip coupling on the other end since the pipe that is in place is so rigid and I can't move it into the slip coupling. Can I use one of the expandable repair couplings? Are those okay for furnace vents?
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Old 12-05-2009, 09:29 AM   #4
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Use couplings without a stop in them or furnco's.
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Old 12-05-2009, 09:35 AM   #5
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Check them once a year for deterioration.
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furnace , pvc , repair

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