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Thread: Mystery vent

  1. #1
    Join Date
    Mar 2007
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    Philadelphia PA
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    3,177

    Default Mystery vent

    Anyone know what the circular doo-hickey is? Never seen one before. I seem to have ruled out bath fan vent, dryer vent, kitchen vent.

    vent.jpg

    F.I.R.E. Services
    "There is no exception to the rule that every rule has an exception." -James Thurber, writer and cartoonist (1894-1961)
    www.ArnoldHomeInspections.com

  2. #2

    Default Re: Mystery vent

    Are you sure it is a vent?


  3. #3
    Join Date
    Jul 2008
    Location
    Chicago
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    261

    Default Re: Mystery vent

    Fresh air intake to the HVAC? Was the furnace nearby?

    Mike Lamb
    Inspection Connection, Inc.
    http://www.inspection2020.com/

  4. #4
    Join Date
    Mar 2007
    Location
    Plano, Texas
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    4,170

    Default Re: Mystery vent

    Fresh air to fireplace? I've never seen that vent style though.

    Jim Luttrall
    www.MrInspector.net
    Plano, Texas

  5. #5
    Join Date
    Mar 2007
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    Philadelphia PA
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    3,177

    Default Re: Mystery vent

    The first floor powder room is on the other side of the wall, but this thing is not connected to the exhaust fan.
    There is no fireplace.
    The high efficiency gas furnace is at that end of the basement, but it has no pipe connected to the combustion air in take.
    When you peak inside you do see a metal duct similar to dryer duct.

    "There is no exception to the rule that every rule has an exception." -James Thurber, writer and cartoonist (1894-1961)
    www.ArnoldHomeInspections.com

  6. #6
    Join Date
    Mar 2012
    Location
    Lansdale, PA
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    876

    Default Re: Mystery vent

    That style of vent is often used around here in finished basements as an HVAC supply duct. The center part screws in and out to vary airflow. In that use I would suspect a make-up air vent.


  7. #7
    Join Date
    Feb 2009
    Location
    Southern Vancouver Island
    Posts
    4,546

    Default Re: Mystery vent

    It is simply an adjustable vent cap that fits into a rigid pipe with spring clips.

    Sometimes used for air vents, heating ducts, HRV ducts, passive air supplies, etc.
    Does that narrow it down for yuh?

    Oh yeah, it is designed for interior use. The threaded rod is just going get rusty ouside like that.

    John Kogel, RHI, BC HI Lic #47455
    www.allsafehome.ca

  8. #8
    Join Date
    Dec 2007
    Location
    Holladay, UT
    Posts
    565

    Default Re: Mystery vent

    This is just a guess but could it possibly be make up air for clothes dryer. I say that based on the fact that the lowest louvered vent is painted and the other two are white which would indicate they were put in at same time. Is the clothes dryer in a closet? Or could just be make up air for exhaust fan etc. Was there an ERV or HRV

    Last edited by Tom Rees; 09-09-2014 at 08:17 AM.
    Tom Rees / A Closer Look Home Inspection / Salt Lake City, Utah

  9. #9
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    Mar 2012
    Location
    Lansdale, PA
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    876

    Default Re: Mystery vent

    Thread drift, but of course there are also issues with the stucco.


  10. #10
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    Mar 2007
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    Default Re: Mystery vent

    Quote Originally Posted by Tom Rees View Post
    This is just a guess but could it possibly be make up air for clothes dryer. I say that based on the fact that the lowest louvered vent is painted and the other two are white which would indicate they were put in at same time. Is the clothes dryer in a closet?
    Interesting thought, but clothes dryer not in closet, wouldn't need make up air. The lowest one is the dryer, the upper one is the powder room exhaust.

    "There is no exception to the rule that every rule has an exception." -James Thurber, writer and cartoonist (1894-1961)
    www.ArnoldHomeInspections.com

  11. #11
    Join Date
    Sep 2013
    Location
    Illinois
    Posts
    6

    Default Re: Mystery vent

    Quote Originally Posted by John Kogel View Post
    It is simply an adjustable vent cap that fits into a rigid pipe with spring clips.

    Sometimes used for air vents, heating ducts, HRV ducts, passive air supplies, etc.
    Does that narrow it down for yuh?

    Oh yeah, it is designed for interior use. The threaded rod is just going get rusty ouside like that.
    I agree that it is an interior type vent or register. I've seen a few like it.


  12. #12
    Join Date
    Jul 2013
    Location
    California
    Posts
    20

    Default Re: Mystery vent

    Quote Originally Posted by Mark Reinmiller View Post
    Thread drift, but of course there are also issues with the stucco.

    Good lord but is that some ugly stucco work or what.


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