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Thread: Pool pump replacement

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    Pool pump replacement

    My pool is almost 8 years old and my pump has apparently burned out. It is a A.O. Smith Century Centurion, 3/4 hp. My pool is 18,000 gal. What is the optimum hp for my pool? I have a heyward sand filter. I also have a polaris pool cleaner. I have no problem changing the pump, but want to make sure that it is going to last and have sufficient hp for the job. Any help offered is greatly appreciated.
    54'X26', 9'x7' Spa, Gunite, Pebbletech Blue Granite, Pentair Equipment, 520 Cartridge filt., SWG, 320 chlorinator (just in case), Easy touch 8 control, 2 1/2 hp pool pump, 400k Mastertemp Heater, Polaris 280 on 3/4 hp pump, 22' x 4' Moss rock waterfall, and weaping wall 2.5hp, 10x8 Flagstone island with 3 fountain jets w/ 2.0hp. 28k gallons.

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

    Re: Pool pump replacement

    How well did the one you had work?

    How many hours a day do you run the existing pump to keep the pool clear?

    3/4 hp sounds about right for that sized pool.

    You might be better off replacing your existing pump with a 2 speed pump. It should help your power bill even if you run it 24 hours on low.
    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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    SCCS's Avatar
    Join Date
    Sep 2008
    Left coast

    Re: Pool pump replacement

    I would think a Pentair Intelliflo would be your best bet . It has adjustable speeds that would be energy efficient.
    16,500 gal Roman end with PebbleFina finish
    4 x 160 intelliflo pump
    Easytouch controls with an IC40 chlorinator
    Sta-rite cartridge filter
    A & A infloor cleaning system
    Pentair 5g LED pool light

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    In the Industry

    JoshU's Avatar
    Join Date
    May 2007
    New Orleans, LA

    Re: Pool pump replacement

    What capacity sand filter do you have?

    Is the Polaris running on a dedicated line via a booster pump (180, 280, 380, 3900) or off of the main pump (360)? Or is it a suction cleaner?
    Josh Ulfers - - 888-725-8766 - AutoPilot Pool Pilot Systems, Parts & Cells - AquaCal Heat Pumps

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