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  1. #1
    Join Date
    Aug 2019
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    clogged attic ac system

    My town home A/C is clogged up and need some help to fix it.





    Drain pipe is linked to my bathroom sink.

    Many forums suggested me to use bleach/vinegar but don't know where to pour it.
    It happened before 2 years ago and one of the professional asked me to close the sink drain tap and he did there something in 2 min and the clog was gone! I think he removed those two knobs from the second picture and did something there, but don't know what are they .

    Never did this before so Any suggestions?
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  2. #2
    Join Date
    Oct 2007
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    Austin Texas
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    Those two knobs are drain taps for if your air handler was mounted vertically instead of horizontally.
    Nemo me impune lacessit.

    How much blood do I have to bathe in to get clean?

    Don't look down on anyone unless you're helping them up.

  3. #3
    Join Date
    Jan 2012
    Location
    Missouri, USA
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    Cut the drain line, shop vac, add coupling, glue drain line back together.

  4. #4
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    Mar 2015
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    Medford, N.Y.
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    In that 1st pic. What is that pvc elbow doing? The one to the right of the actual drain line Is that ell "open"?

  5. #5
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    Mar 2019
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    Milwaukee
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    I agree with ksefan. But instead of another coupling add a union for easier clean outs down the road.

  6. #6
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    Thread Starter
    Quote Originally Posted by John Culpepper View Post
    Those two knobs are drain taps for if your air handler was mounted vertically instead of horizontally.
    Sorry for the dumb question- what exactly they do? loosening them or removing-placing them back will help me in anyway?

  7. #7
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    Thread Starter
    Quote Originally Posted by Bdevries View Post
    I agree with ksefan. But instead of another coupling add a union for easier clean outs down the road.
    Thanks ksefan and Bdevries.
    Can you suggest me where should i cut the pipe from the first picture? Thanks again.

  8. #8
    Join Date
    Oct 2007
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    Austin Texas
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    Quote Originally Posted by Touchpad View Post
    Thanks ksefan and Bdevries.
    Can you suggest me where should i cut the pipe from the first picture? Thanks again.
    In the straight section over the emergency pan. (In case it leaks)
    Nemo me impune lacessit.

    How much blood do I have to bathe in to get clean?

    Don't look down on anyone unless you're helping them up.

  9. #9
    Join Date
    Mar 2015
    Location
    Medford, N.Y.
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    Quote Originally Posted by Touchpad View Post
    Thanks ksefan and Bdevries.
    Can you suggest me where should i cut the pipe from the first picture? Thanks again.
    What about that OPEN condensate line from the condensate pan of the AHU,negating the drain line P Trap effect, That might be the cause of all that brown stuff in the "emergency drain pan".

  10. #10
    Join Date
    Oct 2007
    Location
    Austin Texas
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    Quote Originally Posted by Touchpad View Post
    Sorry for the dumb question- what exactly they do? loosening them or removing-placing them back will help me in anyway?
    They are available if the air handler was mounted differently. Loosening or removing will not be of any help. The unit has two drain pans, one for verticle installation and one for horizontal installation. You're stuck with the horizontal pan.
    Nemo me impune lacessit.

    How much blood do I have to bathe in to get clean?

    Don't look down on anyone unless you're helping them up.

  11. #11
    Join Date
    Jan 2004
    Location
    PA
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    Moved to AOP.
    Contractor locator map

    How-to-apply-for-Professional

    How many times must one fix something before it is fixed?

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