Whole House Humidifier - How to Run Drain

Discussion in 'General Plumbing Help' started by chris87, Mar 17, 2018.

  1. Mar 17, 2018 #1

    chris87

    chris87

    chris87

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    I just installed a whole house humidifier on my HVAC system. The issue that I have is that I don't know how to run the drain. I have to use 1/2" ID plastic tubing, but my existing drain line already has a tube going into it from the condensate pump. There isn't enough room for the tubing from the humidifier. Since my humidifier is well above the drain line, I assume that I can run it directly to the drain (and bypass the condensate pump). Is there an ideal way to make this work? I wasn't sure if there is some type of adapter that I can use or if I need to install a tee. I apologize if this is more of an HVAC question.

    IMG_0274_1.jpg
     
  2. Mar 18, 2018 #2

    justin_dewan90

    justin_dewan90

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    You say drain but all I see is the pump. Is that what we're talking about? The outlet side for the pump? Or is there something else I'm not seeing

    Btw I do see the other drain line in the corner of the furnace. Is that what you're talking about?
     
    Last edited: Mar 18, 2018
  3. Mar 18, 2018 #3

    voletl

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    Run it with its own line to the pump
     
  4. Mar 18, 2018 #4

    justin_dewan90

    justin_dewan90

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    Off the top of the tee? Or completely separate?
     
  5. Mar 18, 2018 #5

    chris87

    chris87

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    Sorry for not being more specific in my original post. Yes, I was referring to the drain line in the corner. You’ll see the plastic tubing coming out of the condensate pump, which then runs into the pvc drain pipe. I wanted to route the humidifier directly into this drain, so that it didn’t have to go through the condensate pump. With the plastic tubing already in there, I don’t have enough room to fit the plastic tubing from the humidifier.
     
  6. Mar 18, 2018 #6

    justin_dewan90

    justin_dewan90

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    So the pvc piping in the corner is the outlet for the condensate and then the plastic tubing takes it to the pump? If so, then the previous commentor is right. Take it directly to the pump.
     
  7. Mar 18, 2018 #7

    chris87

    chris87

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    No, the pvc in the front is the AC condensate line that runs to the condensate pump. From there, the pump drains into the drain line in the back (it's hard to see in the picture, but you'll see it on the right side of the return). The outlet line on the condensate pump is the plastic tubing that you see. When the condensate hits the pump, it is sent to the drain through the plastic tubing. Since the humidifier is so high, it didn't seem necessary to route it through the condensate pump. Can I just connect it directly to the drain in the back (by the return)?
     
  8. Mar 18, 2018 #8

    justin_dewan90

    justin_dewan90

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    Floor drain near by?

    In the corner?
     
    Last edited: Mar 18, 2018
  9. Mar 18, 2018 #9

    chris87

    chris87

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    Unfortunately, there is no floor drain at all. The pipe exits through the side of the wall (exterior).
     
  10. Mar 19, 2018 #10

    CT-18

    CT-18

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    just put an increaser on that line that has the tube dumping into it now. Make sure you clean that condo pump out every now and then. I have seen many of them get gunk in them and stop working.
     

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