Shorter cold-air return

Discussion in 'HVAC Heating & Cooling' started by ktambascio, May 5, 2009.

  1. ktambascio

    ktambascio Software Engineer

    Messages:
    28
    Location:
    Cleveland, OH
    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. MaintenanceMan

    MaintenanceMan In the Trades

    Messages:
    54
    Location:
    Indiana
    Yes, generally, that would be feasible.
  3. hj

    hj Moderator & Master Plumber Staff Member

    Messages:
    26,537
    Location:
    Cave Creek, Arizona
    return

    As long as you make the transitions smoothly.
  4. ktambascio

    ktambascio Software Engineer

    Messages:
    28
    Location:
    Cleveland, OH
    What tools would I need to do this? Should I look for pre-made ducts or will I have to fabricate them?
  5. jadnashua

    jadnashua Retired Defense Industry Engineer xxx

    Messages:
    21,948
    Location:
    New England
    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.
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