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  1. #1
    Join Date
    Mar 2011
    Location
    Lombard, Illinois
    Posts
    133

    Default venting and Return air distance from each other

    Hi All,

    Is there a rule mandating how far apart heat/ac vent needs to be from the return vent? ( Note=Both located in the same room)

    Thank you in advance for any assistances

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    Member Benefits1
    Fidel F. Gonzales
    RELIANT INSPECTION SERVICE
    http://www.reliantinspectionservice.com

  2. #2
    Join Date
    Mar 2007
    Location
    Knoxville, TN
    Posts
    2,445

    Default Re: venting and Return air distance from each other

    Are you talking about return to combustion source distance?
    Or return to supply distance?
    Or exhaust vent? (exhaust vent should not be in the room BTW).


  3. #3
    Join Date
    Mar 2011
    Location
    Lombard, Illinois
    Posts
    133

    Default Re: venting and Return air distance from each other

    Hi Jack return to supply. Thx for quick response

    Fidel F. Gonzales
    RELIANT INSPECTION SERVICE
    http://www.reliantinspectionservice.com

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

    Default Re: venting and Return air distance from each other

    No rule that I know in the IRC. But if it does not do the job, it needs to be fixed. That said, sometimes a return could be located quite near the supply in a properly designed and functioning system depending on among other things the "throw" of the grill.

    Jim Luttrall
    www.MrInspector.net
    Plano, Texas

  5. #5
    Join Date
    Mar 2011
    Location
    Lombard, Illinois
    Posts
    133

    Default Re: venting and Return air distance from each other

    Quote Originally Posted by Jim Luttrall View Post
    No rule that I know in the IRC. But if it does not do the job, it needs to be fixed. That said, sometimes a return could be located quite near the supply in a properly designed and functioning system depending on among other things the "throw" of the grill.
    Hi Jim, Thanks for the response. My client had ask the seller to have the register and return duct fixed. He said there were too close to each other. So the Realtor called me for advise. I told her if the returned and register were doing there job there was no issue. The client insisted. So I was just covering my "SIX"

    In my research I found this which supports your statement.

    "ACCA Manual T says:
    "The location of the return grille does not affect room air patterns which are controlled by the supply outlets and will not have a significant affect on pockets of stagnate air. Low returns do "pull" warm air down to the floor and high returns do not "pull" cool air up into the occupied zone."

    Thanks again for your help. Warmest regards from the Windy City

    Fidel F. Gonzales
    RELIANT INSPECTION SERVICE
    http://www.reliantinspectionservice.com

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