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  1. #1
    Join Date
    Jul 2008
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    11

    Auxiliary condensate line dripping outside

    Auxiliary condensate line dripping outside. I live in a two story house which has two units; I checked the drip pans in the attic and they both are dry. I pour a bleach solution into both primary condensate lines but the dripping outside continues; now I'm wondering if the contractor/AC people hooked up these lines correctly. I'm no AC man just learning.

    Can anyone tell me why this line is dripping outside?
    See attached photo of evaporator with condensate lines.
    TIA

  2. #2
    Join Date
    Jan 2004
    Location
    Lancaster PA
    Posts
    67,705
    Because the vent in the drain line is open.
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    How many times must one fix something before it is fixed?

  3. #3
    Join Date
    Dec 2006
    Location
    Middle Tennessee
    Posts
    11,347

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    Quote Originally Posted by beenthere View Post
    Because the vent in the drain line is open.
    and that makes the p-trap useless!



    .

  4. #4
    Join Date
    Mar 2005
    Location
    Suppy NC
    Posts
    4,513
    the trap is most likely plugged
    try to blow it out

  5. #5
    Join Date
    Jul 2008
    Posts
    11
    Quote Originally Posted by beenthere View Post
    Because the vent in the drain line is open.
    The house is only 3 years old and there has never been a cap on that vent or my other vent coming from the second unit.

    1. I poured a bleach solution into the vent earlier today to clean the p-trap.
    2. Should I put a cap on the vent?


    Thanks so much for your help and quick responses.

  6. #6
    Join Date
    Mar 2005
    Location
    Suppy NC
    Posts
    4,513
    since this is a positive pressure coil witch mean it is on the supply side i recomend leaving the cap off. You will get conflisting optinions on this because it is on the supply

    if on the return or negative pressure ciol the yes the cap has to be on or it will not drain

    bleach with not clear the trap once it is plugged. It will help clean it wonce it is clear

  7. #7
    Join Date
    Jan 2004
    Location
    Lancaster PA
    Posts
    67,705
    I agree its not much air that blows out of it. But it is an air leak, and should be sealed/capped off.

    After all, wouldn't you seal a leak in the duct if it was that big.
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  8. #8
    Join Date
    Jul 2008
    Posts
    11

    To cap or not to cap that is now the question???

    Quote Originally Posted by beenthere View Post
    I agree its not much air that blows out of it. But it is an air leak, and should be sealed/capped off.

    After all, wouldn't you seal a leak in the duct if it was that big.
    Is there any downside to capping the vent? Or for that matter any thing to be gained by leaving it uncapped? I just want to do what's "best".

    again, thx

  9. #9
    Join Date
    Jan 2004
    Location
    Lancaster PA
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    67,705
    No harm from capping it.
    You won't blow cool or heated air into teh attic if you cap it.
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  10. #10
    Join Date
    Jul 2008
    Posts
    11
    Quote Originally Posted by beenthere View Post
    No harm from capping it.
    You won't blow cool or heated air into the attic if you cap it.
    thx, I'll pick up a couple caps tomorrow and post result.

    How would you recommend blowing out the p-trap or with what should I blow it out? Novice at work. TY

  11. #11
    Join Date
    Dec 2006
    Location
    Middle Tennessee
    Posts
    11,347

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    Quote Originally Posted by fflan513 View Post
    thx, I'll pick up a couple caps tomorrow and post result.

    How would you recommend blowing out the p-trap or with what should I blow it out? Novice at work. TY


    cap the trap and hook a wet vac to the outside end of the drain line!



    .

  12. #12
    Join Date
    Mar 2005
    Location
    Suppy NC
    Posts
    4,513
    now that you put bleach in the pipe i would stromgly reccomend you dont blow through it or you may get a mouth full of bleach. That would not be good.


    best to leave it and see if the bleach works

  13. #13
    Join Date
    Jul 2008
    Posts
    11
    Quote Originally Posted by tinknocker service tech View Post
    now that you put bleach in the pipe i would stromgly reccomend you dont blow through it or you may get a mouth full of bleach. That would not be good.


    best to leave it and see if the bleach works
    Yup, don't want to taste any bleach. thx

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