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Thread: Heat Pump Drain

  1. #1
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    I just cleaned the fan and coils (interior) of my heat pump. They were absolutely gross. Anyway after doing so my drain no longer drains. There is air sucking in thru the drain which prevents the water from draining. What gives??

    Thx
    Bob

  2. #2
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    Put a wet-vac on the outlet of the drain & see what happens. If clears up, great. If not, well, get yourself some hi-press. air & blow it out. If that don't work, well.... Call a pro.

  3. #3
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    The drain is not clogged. It is the air sucking in thru the drain that prevents the water from running out. When the fan turns off the water poors out.

    Thx

  4. #4
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    Then you got an air lock issue. Best way to take care of that is - yes - vacuum out the line again then take your garden hose & spray it up thru the outlet. You know you've cured this problem when water comes spewing back out of the drain. And then test.

    Of course, keep in mind that most drains drain after the unit has shut down.

  5. #5
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    I must not be explaining this properly. The drain is not clogged at all. Water flows out of the drain pan freely. It is air being drawn in thru the drain outlet that is preventing the water from exiting.

  6. #6
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    Originally posted by special ed
    Of course, keep in mind that most drains drain after the unit has shut down.
    In other words, this is normal.

  7. #7
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    The drain pan fills and overflows before the unit turns off.
    I'm in GA, very humid!! It as almost as if the unit can't get enough air thru the filter and tries to suck it from anywhere it can. The filter is new. This nevere happened until I cleaned the coils and the fan.

  8. #8
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    Feb 2005
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    Pizzabob

    You need a 'trap' on the drain, if not there it needs to be installed
    If trap is there, then stop up end of drain pipe ( outlet ) with a rag or something, for a few minutes to let the water get into the trap, then remove rag. Once the water is in the trap, it will allow for draining.

    Hope this helps,
    Richard

  9. #9
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    What kind of unit do you have? Is it in the garage or attic? And what kind of coil cleaner did you use? Does it have a P-trap on the drain?

    I'm in FL. (Jacksonville) & it's been real humid here, too.

  10. #10
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    Re: Pizzabob

    Originally posted by bornriding
    You need a 'trap' on the drain, if not there it needs to be installed
    If trap is there, then stop up end of drain pipe ( outlet ) with a rag or something, for a few minutes to let the water get into the trap, then remove rag. Once the water is in the trap, it will allow for draining.

    Hope this helps,
    Richard
    Finally the right answer.

  11. #11
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    If you had the answer then why didn't post something sooner?
    WHY?

  12. #12
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    I posted as soon as I read it. Sorry but as I was reading this post the problem was obvious and your answers didn't make sense. Most drains drain after the unit shuts down?

  13. #13
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    Jun 2003
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    Originally posted by special ed
    Does it have a P-trap on the drain?
    Does that question make sense to you?

    I asked, haven't received a response yet.
    WHY?

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