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  1. #1
    Join Date
    Mar 2007
    Location
    Spring City/Surrounding Philadelphia area
    Posts
    3,471

    Default Minimum Clearance

    What is the minimum distance a high efficiency furnace combustion exhaust pipe should be located away from an operable window? This is a bedroom window next to the pipe.

    And yes, I did call out the burglar bars for removal.

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  2. #2
    Join Date
    Mar 2007
    Location
    Philadelphia PA
    Posts
    3,177

    Default Re: Minimum Clearance

    Nick - I think that's up to the manufacturer, but I can't believe in any case it would be less than 12 inches.


  3. #3
    Join Date
    Mar 2007
    Location
    Atlanta, Georgia
    Posts
    1,056

    Default Re: Minimum Clearance

    Don't forget to mention the minimum 24" distance between adjoining HVAC units.

    "The Code is not a peak to reach but a foundation to build from."

  4. #4
    Join Date
    Mar 2007
    Location
    Ormond Beach, Florida
    Posts
    25,313

    Default Re: Minimum Clearance

    And 12" clearance to the wall.

    And 36" clearance (working space) from the service side (toward the window in this case).

    And the disconnect which is partially blocked by the right condenser unit (disconnect just outside photo on right side).

    Also, if that is the emergency egress, getting out, or being rescued, will be a greater problem with that a/c condenser right there, forgetting about the noise factor right outside that window, and the air being discharged from the top of the condenser unit with that window open.

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

  5. #5
    Join Date
    Oct 2003
    Location
    Rockwall Texas
    Posts
    4,517

    Default Re: Minimum Clearance

    Looks as if the condensing unit is also setting upon a wooden base or pallet.

    What happens when it rots out from under it?

    rick


  6. #6
    Join Date
    Aug 2007
    Location
    Memphis TN.
    Posts
    4,311

    Default Re: Minimum Clearance

    Quote Originally Posted by Rick Hurst View Post

    What happens when it rots out from under it?

    rick
    No worries, It'll be at the Metal Scrap Yard [ cooper thieves] Long before that happens.

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  7. #7
    Join Date
    Feb 2008
    Location
    Chicago IL
    Posts
    1,940

    Default Re: Minimum Clearance

    I wouldn't go by any code reference unless it was printed last week.
    The city and various municipalities up here have made numerous ongoing changes to what is allowed for 90+ venting.
    I would (and do) call the local muni for updates.
    Over the last few years there have been to many complaints from neighbors about odors/fumes/dripping condensation/etc. coming at/into windows.
    Depending on variables 3-4' from any opening is now standard here.

    www.aic-chicago.com
    773/844-4AIC
    "The Code is not a ceiling to reach but a floor to work up from"

  8. #8
    Join Date
    Nov 2007
    Location
    Chicago
    Posts
    548

    Default Re: Minimum Clearance

    The exhaust vent should be 4 feet below or to the side from any doors or windows. Or 12 inches above said openings per most manufacture suggustions. But I would check with the local codes as they may require more of a distance.


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