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Thread: Need New Pump

  1. Back To Top    #1

    Join Date
    Apr 2007
    Location
    Longview, Texas
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    15

    Need New Pump

    Looking for advice for a new motor/pump.

    My current setup is a 20k inground with a 1hp 220v stay rite pump. My filter is a heyward sand filter (300 pounds of media). My suction and discharge lines are 1.5". I have one main drain and one skimmer. I have 3 return jets. My setup is very basic, as this is an older pool. I do not have any "water features" or solar panels.

    Should I go with a single speed 1hp replacement or would a 3/4hp be adequate? Or should I move up to a 1.5hp? I have read about how the 2 speed pumps can save electricity, is this something I should consider? I live in Texas and I think my electricity is about .10 kwh. If it makes sense to go with a 2 speed what size hp would be optimal?

    I appreciate any help/adice that you could give me as I am kind of lost on what would be best for my setup. Thanks.
    20k inground, Heyward Sand Filter, Compupool Salt Generator, Blue Pearl Robotic Cleaner

  2. Back To Top    #2
    susa's Avatar
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    Oct 2010
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    Deep South
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    Re: Need New Pump

    my situation was similar albeit smaller size pool and after having tested (...and ran over the years multiple single speed pumps in various pools...) the latest and greatest, went with IntelliFlow VF. the best feature is the total silence and I can run pump 24 hours/day and use less power than my old pump which ran 4 hours/day.

  3. Back To Top    #3
    Mod Squad zea3's Avatar
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    Re: Need New Pump

    They say slow moving water filters better. Most people with 2 speed pumps only use high speed for vacuuming. You could do fine with a 1hp 2 speed pump.
    TFP Moderator
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    Vogue 21' round AG, Pentair 1 hp 2 speed pump, 36 sq ft DE filter, Hayward S180T 150# sand filter, Houston, Texas
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    JasonLion's Avatar
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    May 2007
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    Re: Need New Pump

    A two speed pump will save electricity and in the long run it will save money. A variable speed pump will save even more electricity, but not enough to ever pay back the initial investment (given your electric rates).

    Unless you have some problem with low flow rates using the old pump, you definitely don't want a larger pump. Even a fairly large pool is just fine with a full rated 3/4 HP pump.

    Depending on what is wrong with your old pump, you may just need a new motor, and not an entire pump. Replacing just the motor is less expensive and about the same difficulty as replacing the entire pump. If you go that route, you want to find a two speed motor that matches the specs of your current motor when it is on high speed.
    19K gal, vinyl, 1/2 HP WhisperFlo pump, 200 sqft cartridge filter, AutoPilot Digital SWG, Dolphin Dynamic cleaning robot
    Creator of PoolMath and Pool Calculator. Other handy links: Support this site, TF Test Kits, Pool School

  5. Back To Top    #5

    Join Date
    Apr 2007
    Location
    Longview, Texas
    Posts
    15

    Re: Need New Pump

    Thanks for all the replies. I figured that given my situation a varible speed pump would be overkill. I am intrigued by the 2 speed pump idea.

    I'm going to do a little shopping and see what I can find. I'll probably have more questions later. Thanks again.
    20k inground, Heyward Sand Filter, Compupool Salt Generator, Blue Pearl Robotic Cleaner

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