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  1. 04-09-2011, 05:56 PM #1
    Bruce Ramsey's Avatar
    Bruce Ramsey
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    Default Max Vertical lift of Condensate pumps?

    Anybody got a guess at what the maximum vertical lift a condensate can pump water?

    Today's basement had a 16 foot ceiling and the condensate pump was trying to lift water from the basement floor up and out the sidewall about 3 feet above grade level. Roughly 19ft, over a hairpin turn in the flex line.

    There was rust running out of the A/C unit so presumably the condensate lines were backed up.

    Tried posting pics but apparently there are too large.

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  2. 04-09-2011, 05:59 PM #2
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    Default Re: Max Vertical lift of Condensate pumps?

    Quote Originally Posted by Bruce Ramsey View Post
    Anybody got a guess at what the maximum vertical lift a condensate can pump water?
    Whatever the pump is rated for, there are several sizes, capacities, and HP of condensate pumps.

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  3. 04-09-2011, 06:11 PM #3
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    Default Re: Max Vertical lift of Condensate pumps?

    Here is a site that shows your basic pumps. It looks like you are right at the cut-off point for the smaller ones.


    Hartell Condensate Pumps

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  4. 04-10-2011, 01:56 AM #4
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    Default Re: Max Vertical lift of Condensate pumps?

    Also be sure the discharge line is properly sized.

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  5. 04-10-2011, 10:02 AM #5
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    Bruce Ramsey
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    Default Re: Max Vertical lift of Condensate pumps?

    Thanks! Should have googled around a bit. Looks like common sizes provide 13'-15' of lift. Probably undersized pump for the particular installation.

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