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Thread: Shorter cold-air return

  1. #1
    Software Engineer ktambascio's Avatar
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    May 2009
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    Default Shorter cold-air return

    One of the proposed locations for our basement bathroom is in an area where the cold air return drops down about 7"-8" from the bottom of the floor joists. Is it possible to replace a section of the cold air return with a thinner-and-wider duct to gain a few inches of head room? If we kept the same volume capacity with a thinner duct, would that be viable?

    Thanks,
    Kevin

  2. #2
    In the Trades MaintenanceMan's Avatar
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    Default

    Yes, generally, that would be feasible.

  3. #3
    Moderator & Master Plumber hj's Avatar
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    Default return

    As long as you make the transitions smoothly.

  4. #4
    Software Engineer ktambascio's Avatar
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    What tools would I need to do this? Should I look for pre-made ducts or will I have to fabricate them?

  5. #5
    Retired Defense Industry Engineer jadnashua's Avatar
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    Default

    You may need to get them fabricated. What I've done is take the measurements to the local shop and they make them for me to order.
    Jim DeBruycker
    Important note - I'm not a pro
    Retired Defense Industry Engineer; Schluter 2.5-day Workshop Completed 2013, 2014

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