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  1. #1
    Join Date
    Oct 2007
    Location
    Arizona
    Posts
    85

    Default Ventilaion Questions

    Sorry if this post shows up in another section on this forum. I wasn't sure where to put it.

    On a new construction inspection today: Laundry ventilation was provided by a fan in the adjacent bathroom (same room separated by a door) Assuming when the bathroom door is closed this defeats the purpose of laundry ventilation. Does this differ by AHJ? Is there a code reference for laundry ventilation requirements?

    The other two bathrooms in the home do not have mechanical vents, windows only. Are powered exhaust vents required in bathrooms in a home built in 2015?

    Also, kitchen exhaust vents to the interior (vent on microwave). Should it be vented to the exterior?

    Thank you for your help.

    -Chris

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  2. #2
    Join Date
    Mar 2007
    Location
    Plano, Texas
    Posts
    4,245

    Default Re: Ventilaion Questions

    Quote Originally Posted by Chris Stichter View Post
    Sorry if this post shows up in another section on this forum. I wasn't sure where to put it.

    On a new construction inspection today: Laundry ventilation was provided by a fan in the adjacent bathroom (same room separated by a door) Assuming when the bathroom door is closed this defeats the purpose of laundry ventilation. Does this differ by AHJ? Is there a code reference for laundry ventilation requirements?

    The other two bathrooms in the home do not have mechanical vents, windows only. Are powered exhaust vents required in bathrooms in a home built in 2015?

    Also, kitchen exhaust vents to the interior (vent on microwave). Should it be vented to the exterior?

    Thank you for your help.

    -Chris
    Unless the IRC changed when I was not looking, there is no requirement for laundry ventilation.
    Mechanical ventilation is required in bathrooms.
    Vent in toilet room won't meet requirement for separate bathroom if there is an intervening door and vice versa.

    Last edited by Jim Luttrall; 08-15-2016 at 02:55 PM.
    Jim Luttrall
    www.MrInspector.net
    Plano, Texas

  3. #3
    Join Date
    Mar 2007
    Location
    Santa Rosa, CA
    Posts
    3,154

    Default Re: Ventilaion Questions

    Chris,

    Ventilation used to be required in laundry rooms (at least it was in CA), but that went away a number of years ago. I cannot remember when, but am guessing a decade or more. Turns out ventilation wasn't really necessary in the laundry area.

    Mechanical ventilation used to be required only in bathrooms that did not have an exterior window. Ventilation is now required in all bathrooms. You would need to find out when AZ started enforcing that. In CA, I believe that went into effect in 2014. Might be different in AZ.

    Department of Redundancy Department
    Supreme Emperor of Hyperbole
    http://www.FullCircleInspect.com/

  4. #4
    Join Date
    May 2010
    Location
    No. San Diego Co., CA
    Posts
    562

    Default Re: Ventilaion Questions

    " Also, kitchen exhaust vents to the interior (vent on microwave). Should it be vented to the exterior? "


    No, not necessarily. Microwaves designed as Built-ins, over the range, have an exhaust fan which can be removed and flipped during installation to vent to exterior routed ductwork. If the fan is left alone it just vents back into the kitchen. Venting to the exterior is optimal but not required.





  5. #5
    Join Date
    Oct 2007
    Location
    Arizona
    Posts
    85

    Default Re: Ventilaion Questions

    Thanks for replies, guys. Always appreciate your experience and insight.


  6. #6
    Join Date
    Mar 2007
    Location
    New Westminster, B. C., Canada
    Posts
    165

    Default Re: Ventilaion Questions

    Ventilation used in laundry rooms is always a good idea; just needs to be done right, as with all other rooms...

    -Glenn Duxbury, CHI

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