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  1. #1
    Jake Guerrero's Avatar
    Jake Guerrero Guest

    Default Return air balance

    I inspected a new home the other day where the master bedroom seemed like it was pressurized (I would close the door, and the door would be 'sucked' into the frame).

    I had 2 supply vents in the master bedroom, and at least one in the adjoining master bath (maybe two, I can't recall..the master bath was large).

    There was a return air vent about 7 feet on the ouside of the master bedroom in a hall area. The unit served master bed and bath, an office, and part of another living area.

    To cicumvent this problem (besides more space between the door and floor) I have seen return air sized ductwork run in the attic between living areas, with return air grilles and no filters (looks like a big Slinky when u see it in the attic).

    My question is...is there an industry term for the extra ductwork supplying more return air from a living area? I suppose a small return vent could be installed in the master bedroom and vented with the main hallway since they are so close.

    Jake

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  2. #2
    Join Date
    Mar 2007
    Location
    Dallas, Texas
    Posts
    4,112

    Default Re: Return air balance

    Jumper duct is the term that comes to mind.
    Jim

    Jim Luttrall
    www.MrInspector.net
    Dallas, Texas

  3. #3
    Join Date
    Mar 2007
    Location
    Ormond Beach, Florida
    Posts
    25,317

    Default Re: Return air balance

    Or 'bridge duct'.

    Or 'balance duct'.

    Or ... Phillip, Kevin and the other HVAC guys will likely add more terms.

    Jerry Peck, Construction / Litigation Consultant
    Construction Litigation Consultants, LLC ( www.ConstructionLitigationConsultants.com )
    www.AskCodeMan.com

  4. #4
    Jake Guerrero's Avatar
    Jake Guerrero Guest

    Default Re: Return air balance

    Thanks. I'll use whichever of these I think of first


  5. #5
    Join Date
    Mar 2007
    Location
    Houston, Texas
    Posts
    292

    Default Re: Return air balance

    "Jumper ducts" or just "jump duct" is what we call them here.

    If it were me though I would just add a 12" by 24" return-air-filter-grill in the ceiling and duct it to the return plenum of the system rather than using a passive jumper duct system.


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