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  1. #1
    Join Date
    Aug 2009
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    Raleigh
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    105

    Default laundry room venting

    When I say laundry room, I mean a room that is a separate room much like a typical master bedroom closet. Nothing else in there - no water heater, furnace, etc.

    Seems like around '06 or '08 IRC mandated passive venting of the laundry room. I cannot find this in my book though; read about it somewhere. I typically see a passive vent at the top of a wall and sometimes the laundry room is conditioned. In rare cases I see no passive venting but the room is conditioned.

    Can anyone direct me to the language that addresses this?

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  2. #2
    James Duffin's Avatar
    James Duffin Guest

    Default Re: laundry room venting

    NC Fuel Gas Code


    [M] 614.5 Makeup air.
    Where a closet is designed for the
    installation of a clothes dryer, an opening having an area of not
    less than 100 square inches (645 mm
    2) for makeup air shall be
    provided in the closet enclosure, or makeup air shall be provided

    by other approved means.



  3. #3
    Join Date
    Aug 2009
    Location
    Raleigh
    Posts
    105

    Default Re: laundry room venting

    Thanks. That is it.

    What would other approved means be if the 100sq inches were not met? Would just having an HVAC supply register in there work? That would not be as functional in my opinion as a 100sq in opening.


  4. #4
    James Duffin's Avatar
    James Duffin Guest

    Default Re: laundry room venting

    In NC a supply register would not satisfy the requirement.


  5. #5
    Join Date
    Mar 2007
    Location
    Lake Barrington, IL
    Posts
    1,363

    Default Re: laundry room venting

    Quote Originally Posted by Randall Clark View Post
    Can anyone direct me to the language that addresses this?
    Sure can! It'd be the code that the local jurisdiction was using when the home was built.

    Eric Barker, ACI
    Lake Barrington, IL

  6. #6
    Join Date
    Mar 2007
    Location
    Lake Barrington, IL
    Posts
    1,363

    Default Re: laundry room venting

    Quote Originally Posted by Randall Clark View Post
    Can anyone direct me to the language that addresses this?
    Sure can! It'd be the code that the local jurisdiction was using when the home was built.

    Eric Barker, ACI
    Lake Barrington, IL

  7. #7
    Join Date
    Jul 2007
    Location
    Chicago
    Posts
    187

    Default Re: laundry room venting

    RC,

    Supply vent will not work. Must be dedicated make up air whether from outside via a damper that is connected to the firing of the appliance with integral appliance lock out or a passive damper/vent that satisfies the 100 sq inches.

    Interestingly, are well allowed to use the perimeter door openings as net free area? For some large gaps or undercuts this could come close to same area (just not dedicated).


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