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  1. #1
    Join Date
    Mar 2007
    Location
    Southern Maryland
    Posts
    33

    Default Unknown Venting Device

    I found this device in an attic of a townhouse style condo in Columbia, MD. I could not navigate the attic for several reasons. I dont know where the input and output vents go. I could not find the gas dryer vent which exhausts up through the attic. Any helpp appreciated. I know this isn't much information. DSC01127.JPG

    2018 ASHI InspectionWorld
    Jim, in Calvert County, MD

  2. #2
    Join Date
    Mar 2007
    Location
    Orlando, FL
    Posts
    1,340

    Default Re: Unknown Venting Device

    Most likely a Heat Recovery Ventilation unit (HRV) a type of air-to-air heat exchanger.

    Dom.


  3. #3
    Join Date
    Aug 2007
    Location
    Memphis TN.
    Posts
    4,311

    Default Re: Unknown Venting Device

    What does the Warning Label say?

    It Might have Choked Artie But it ain't gone'a choke Stymie! Our Gang " The Pooch " (1932)
    Billy J. Stephens HI Service Memphis TN.

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

    Default Re: Unknown Venting Device

    Quote Originally Posted by Billy Stephens View Post
    What does the Warning Label say?
    "If you can read this label, you got your face in the fiberglass, dude. Wear a mask!"


    Yes it is a ventilator in all likelihood but it is poorly installed on the insulation like that.
    We would have to know where the pipes are terminated to say more.

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

  5. #5
    Join Date
    Aug 2007
    Location
    Memphis TN.
    Posts
    4,311

    Default Re: Unknown Venting Device

    Quote Originally Posted by John Kogel View Post
    "If you can read this label, you got your face in the fiberglass, dude. Wear a mask!"
    The OP has the good photo maybe he can zoom in and read whats on the label.
    *is this type of technology available in Canada?
    **save a few of the two-four for Breakfast.

    It Might have Choked Artie But it ain't gone'a choke Stymie! Our Gang " The Pooch " (1932)
    Billy J. Stephens HI Service Memphis TN.

  6. #6
    Join Date
    Feb 2009
    Location
    Southern Vancouver Island
    Posts
    4,546

    Default Re: Unknown Venting Device


    It might just be an inline fan with a bigger than usual housing. These ones are Broan, and I got bored searching after that.

    With no sign of a door for cleaning, it is not likely an HRV, IMO.

    No, here in the wild Northwest, we just punch a fist thru the wall or kick out a window for ventilation. Cover the hole with a baby seal pelt in the winter.

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

  7. #7
    Join Date
    Feb 2008
    Location
    Caledon, Ontario
    Posts
    5,005

    Default Re: Unknown Venting Device

    Label states - Warning Disconnect Power Before Servicing Unit

    There is also a high temp sensor at the vent area. There fore I don't think its part of a heat recovery unit. Possibly a concentric type vent being used/installed in an inappropriate and contrary to manufactures installations instructions..


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

    Default Re: Unknown Venting Device

    I'll go with an "Air Exchanger" but as rest said I don't think it is installed correctly. I don't see many of these in my area but don't they usually pull air from exterior not attic. Second guess would be some kind of venting system for bathrooms, one fan, multiple intakes??? Let us know what you find out.

    Tom Rees / A Closer Look Home Inspection / Salt Lake City, Utah

  9. #9
    Join Date
    Mar 2007
    Location
    Ormond Beach, Florida
    Posts
    26,248

    Default Re: Unknown Venting Device

    As installed, I might go with Insulation Particulate Injector, or maybe Fresh Air Contamination Source.

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

  10. #10
    Join Date
    Mar 2014
    Location
    California
    Posts
    1

    Default Re: Unknown Venting Device

    WARNING: Disconnect power to unit before removing access panel.


  11. #11
    Join Date
    Dec 2007
    Location
    Holladay, UT
    Posts
    565

    Default Re: Unknown Venting Device

    Quote Originally Posted by Jerry Peck View Post
    As installed, I might go with Insulation Particulate Injector, or maybe Fresh Air Contamination Source.
    Good one Jerry, At first I was trying to figure out what the devices were you were talking about and then I got the humor.

    Tom Rees / A Closer Look Home Inspection / Salt Lake City, Utah

  12. #12
    Join Date
    Mar 2007
    Location
    Ormond Beach, Florida
    Posts
    26,248

    Default Re: Unknown Venting Device

    Tom,

    I didn't realize it until your post, but ... I forgot the smiley.

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

  13. #13
    Join Date
    Mar 2008
    Location
    Charlotte NC
    Posts
    2,303

    Default Re: Unknown Venting Device

    Quote Originally Posted by Jerry Peck View Post
    Tom,

    I didn't realize it until your post, but ... I forgot the smiley.
    Jokes are better when you don't laugh at your own, that's why I don't watch Letterman.

    The beatings will continue until morale has improved. mgt.

  14. #14
    Join Date
    Mar 2007
    Location
    Ormond Beach, Florida
    Posts
    26,248

    Default Re: Unknown Venting Device

    Quote Originally Posted by Vern Heiler View Post
    Jokes are better when you don't laugh at your own, that's why I don't watch Letterman.
    So I should have, or should not have put a smiley after the first post?

    Does only the hairdresser know for sure?

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

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