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Thread: right size pump?

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    right size pump?

    is a 1.5 hp pump too much for my pool? i think it maybe based on info on this website? if it is too large for my pool, what kind of problems will it cause? do i need a new pump? also my pump is a single speed
    24 ft. 52 in. deep above ground
    hayward sand filter
    new pool owner/new bbb believer

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    Mod Squad Bama Rambler's Avatar
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    Re: right size pump?

    We have a 1-1/2 hp pump on our pool and it works great. It could stand to be either a 2-speed or a 1 hp but the 1-1/2 hp works great. Besides it only takes 3.5 hrs to get a turnover so I get more than 2 a day running 8 hours. The biggest thing it does is uses more power but I compensate by running it less.
    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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    Re: right size pump?

    If it is a full-rated 1.5 hp (probably not) then it is probably too big for your filter. What is your normal operating psi?
    Dave S.
    42k vinyl and concrete pool, 1.5hp pump, 140gpm filter
    TFTestkits , PoolMath , Pool School

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    Re: right size pump?

    pool has been up 2.5 months and psi started clean 15 psi and has only gotten to 16 psi since first day.
    24 ft. 52 in. deep above ground
    hayward sand filter
    new pool owner/new bbb believer

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    Re: right size pump?

    That's not bad. I suspect you have an uprated 1.5 hp pump which, in reality is around a 1hp pump.

    Anyway, the important thing is your pump appears to match your filter pretty well and you should have no problems. Generally a .75 full-rated pump is adequate for your size pool but the filter/pump match is a more important than the precise hp.

    I think you're in good shape.
    Dave S.
    42k vinyl and concrete pool, 1.5hp pump, 140gpm filter
    TFTestkits , PoolMath , Pool School

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    Re: right size pump?

    thanks for fast response. tfp has been a pleasure to deal with. my pool has been almost perfect since day one.
    24 ft. 52 in. deep above ground
    hayward sand filter
    new pool owner/new bbb believer

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    dmanb2b's Avatar
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    Re: right size pump?

    I run a 0.5hp full rated with no problems...most energy efficient for a typical abg pool IMHO...the problem with a 1.5hp is not that it won't do the job, it that 1.5 inch pipe doesn't allow it to pump at full capacity, therfore wasting energy.
    24'x52" AGP (13,500 Gallons), Intex SWG, (2)Solar Bear 4x20 panels, Hayward S220T Filter, 1/2hp Pentair Superflo

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