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Thread: Which pump should I go with?

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    Which pump should I go with?

    I have a simple straight forward pool. 19,000 gallons with no frills and a Navigator with a dedicated line. I currently have a 1 HP pump on it and am thinking about going to a 2-speed pump. I don't think a VS pump would really do me any good. My question is will a 2-speed, 3/4 HP motor work ok? From what I have read online so far and looking at the pump curves, it looks like a 3/4 HP would work fine. I would run the pump on low for 15-18 hours and on high for 2-3 hours for the pool cleaner. Any thoughts would would be appreciated.

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    linen's Avatar
    Join Date
    Jul 2010
    Twin Cities, MN

    Re: Which pump should I go with?

    Welcome to tfp, desertgecko

    Are you running solar heating panels now, or do you plan to?

    Another possible need for more flow would be if you backwash a very large sand filter. What do you have for a filter now?

    Assuming your answer is "no" to the above, and you have no features (spa jets, waterfalls, etc.) that need high flow, you should be fine with a 3/4.

    Also, is your feed 115 or 230 volts? If 230, I am only aware of 2-speed pumps at 1 h.p. full rated and up.
    TFP Expert who uses Pool School and my TF100 test kit along with PoolMath for my: Round 11K gallon AGP with deep end, 20" sand filter, Matrix 1hp 2spd, 6 2ftX20ft solar panels (and solar cover!), Intex SWCG (copper bars disconnected) and a Rubadub hot tub (chlorine). The SLAM process is not finished until: 1. CC < 0.5 ppm, 2. An OCLT < 1.0 ppm and, 3. The water is crystal clear.

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    Mod Squad jblizzle's Avatar
    Join Date
    May 2010
    Tucson, AZ

    Re: Which pump should I go with?

    Welcome to TFP!!!

    Add you pool equipment and details to you signature and we will be better able to help.

    linen asks a good question about your supply voltage.

    All 3/4 HP pumps are not the same ... so just looking at that number is not adequate.
    Jason, TFP Moderator
    18k IG pebblesheen pool, Hayward ProLogic P4 w/ T-15 SWG, Pentair 1HP 2-speed Superflo, Hayward 6020 DE filter
    500 sqft Heliocol solar panels, ThePoolCleaner, TF-100 test kit w/ SpeedStir
    Pool School + Test Kit + PoolMath = A TROUBLE FREE POOL
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