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  1. #1
    Join Date
    Oct 2012
    Location
    Shelby NC
    Posts
    129

    Default Is this a proer p-trap for a HVAC condesation line. I see it a lot.

    I see this p-trap a lot. It does not look like it is doing much sloping down hill like that. Obviously he needs a cleanout installed as well. What about the trap? Does it need to go like a " U" like a trap for a sink or would this be fine as long as it ws not on a slope.?

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  2. #2
    Join Date
    Mar 2007
    Location
    Columbus GA
    Posts
    3,747

    Default Re: Is this a proer p-trap for a HVAC condesation line. I see it a lot.

    Looks good

    ' correct a wise man and you gain a friend... correct a fool and he'll bloody your nose'.

  3. #3
    Join Date
    Mar 2007
    Location
    Plano, Texas
    Posts
    4,245

    Default Re: Is this a proer p-trap for a HVAC condesation line. I see it a lot.

    This is pretty shallow and has no vent, a "running" trap. Look at the a/c manufacturers requirements to know for sure. Most will specify a certain depth trap to overcome the pressure differential.

    Jim Luttrall
    www.MrInspector.net
    Plano, Texas

  4. #4
    Join Date
    Mar 2007
    Location
    Fletcher, NC
    Posts
    28,036

    Default Re: Is this a proer p-trap for a HVAC condesation line. I see it a lot.

    Quote Originally Posted by Jim Luttrall View Post
    This is pretty shallow and has no vent, a "running" trap. Look at the a/c manufacturers requirements to know for sure. Most will specify a certain depth trap to overcome the pressure differential.
    As Jim said, that's a 'running trap', those are not allowed.

    Typically, the minimum trap seal (depth) required is 2", I've seen required depths of 3", 4", 5",

    Jerry Peck
    Construction/Litigation/Code Consultant - Retired
    www.AskCodeMan.com

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