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Thread: choosing a pump

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    choosing a pump

    Thank you all in advance for your assistance. We purchased a home last year that had a feature we wanted to avoid. We have now come to love our pool. We initially used the sole pool company to assist us but have since been managing it on our own with the easy help from you. Thus far we are pleased with our chemicals as far as function, cost and ease of use.
    We now have an anticipated need to replace the pump. The pump is becoming increasingly loud and my husband believes the bearings are wearing out . I would like a more energy efficient system.
    I have searched the forums on some guidelines for choosing a pump but I am not successful so far. Can you please direct or assist me in where to look, and also what factors I need to consider.

    some basics
    21k in ground vinyl pool
    old functioning sand filter
    2water returns
    no floor drain
    no water features or automatic cleaners(I might like one in the future)
    currently run the pump 24/7 because we don't know any different, and it works well
    Hayward maxflo self priming 1hp pump
    1.5inch pipes
    21k IG, vinyl, 1hp Hayword, superflo sand filter, bleach , muriatic acid

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    Mod Squad Bama Rambler's Avatar
    Join Date
    Jun 2009
    SouthWest Alabama

    Re: choosing a pump

    The least expensive thing to do is replace the motor with a 2 speed model the same size.
    If you want to replace the pump, you can get a new Max-Flo in a 2-speed model and you won't have to change any plumbing.
    If you really want to get adventurous you could go with a Max-Flo VS if you're electric rates are a little high.
    Dave J. TFP Moderator
    24' x 52" Round AGP. 2hp/¼hp SPL Power-Flo 2-speed pump. 200sqft Waterway Cartridge Filter. 45MHP2(3GPD) Stenner Peristaltic Pump
    Pool School ----- Pool Math ----- TF-Test Kit

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    BoDarville's Avatar
    Join Date
    Jun 2012
    DFW, Texas

    Re: choosing a pump

    Welcome to TFP!

    I always advise anyone in the market for a new pump to only consider 2-speeds and variable-speeds. Two speeds have come down in price over the past few years to the point that many of them cost only slightly more than comparable single-speed pumps. With the energy savings that the 2-speeds offer compared to the single-speed units, the cost differential can often be made up within a single season.

    When comparing 2-speeds vs. variable speed pumps, the general rule of thumb is that if your electric rate is $0.20/kWh or less, then the 2-speed pump makes more sense from a cost-benefit standpoint. Until recently, variable-speed pumps were usually 3 HP models that could be dialed down to a lower flow rate. However, manufacturers are introducing newer versions of variable-speed pumps that are worth taking a look at even if your electric rates are below $0.20/kWh. Here is a post that explains some of these newer lower-HP variable-speed pumps in more detail: A Pump Game Changer
    Gold Supporter, TFP Lifetime Supporter, 26,680 gal Plaster IGP 3.5 - 10' depth / Attached Waterfall Spa, Manually Chlorinated, Triton Sand Filter, 1.5 HP * 1.1 SF = 1.65 SFHP 1-speed Pentair WhisperFlo WF-26 Pump, 400K BTU NG Teledyne Laars Series One Heater, Polaris 360, Test Kit Comparison, Chlorine/CYA Chart, SLAMing Your Pool, OCLT
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