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  1. #1
    Join Date
    Dec 2008
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    Erwin, TN
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    261

    Default Tankless water heater exhaust vent

    How far away does a tankless water heater exhaust vent termination need to be away from a window.

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  2. #2
    Join Date
    Mar 2007
    Location
    Orlando, FL
    Posts
    1,431

    Default Re: Tankless water heater exhaust vent

    You need to look up the unit's listed and labeled instructions for proper vent clearances.


  3. #3
    Join Date
    Dec 2008
    Location
    Erwin, TN
    Posts
    261

    Default Re: Tankless water heater exhaust vent

    Quote Originally Posted by Sam Morris View Post
    How far away does a tankless water heater exhaust vent termination need to be away from a window.
    Looks like its 12" so that means its safe


  4. #4
    Join Date
    Oct 2010
    Location
    MONTREAL QUEBEC-CANADA
    Posts
    1,983

    Default Re: Tankless water heater exhaust vent

    There is more to venting than meets the eye.
    Could you provide the manufacturing tag?
    Gas Appliance Direct Vent Termination Clearances.

    Robert Young's Montreal Home Inspection Services Inc.
    Call (514) 489-1887 or (514) 441-3732
    Our Motto; Putting information where you need it most, "In your hands.”

  5. #5
    Join Date
    Mar 2007
    Location
    Ormond Beach, Florida
    Posts
    27,140

    Default Re: Tankless water heater exhaust vent

    Quote Originally Posted by Sam Morris View Post
    Looks like its 12" so that means its safe
    Sam,

    Even if it meets manufacturer and code requirements ... I wouldn't use the word "safe" ... nothing is "safe" ... other than maybe "a safe" ... and even those have proven to not be completely "safe".

    Jerry Peck
    Construction Litigation Consultant ( www.ConstructionLitigationConsultants.com )
    www.AskCodeMan.com

  6. #6
    Join Date
    Mar 2007
    Location
    Ormond Beach, Florida
    Posts
    27,140

    Default Re: Tankless water heater exhaust vent

    I also see unsealed openings around the two penetrations.

    Is that dryer exhaust vent cap (what looks like a dryer vent cap) for a clothes dryer exhaust and not one for the tankless water heater?

    If it is for the tankless water heater, is it allowed to be used for that use?

    Jerry Peck
    Construction Litigation Consultant ( www.ConstructionLitigationConsultants.com )
    www.AskCodeMan.com

  7. #7
    Join Date
    Mar 2007
    Location
    Plano, Texas
    Posts
    178

    Default Re: Tankless water heater exhaust vent

    Maybe this will help.

    Attached Files Attached Files

  8. #8
    Join Date
    Aug 2019
    Location
    OH
    Posts
    1

    Default Re: Tankless water heater exhaust vent

    Quote Originally Posted by Sam Morris View Post
    How far away does a tankless water heater exhaust vent termination need to be away from a window.
    Also, please make sure they have a CO detector nearby. There was a tragedy here in central OH that could have been prevented. The root cause was a self-installed (not inspected) tankless water heater.


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