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Thread: Guidance For Pump Replacement

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    Guidance For Pump Replacement

    All, My 10 year old Jacuzzi Magnum 1.5 HP pump needed assistance (spin shaft) last season at start up but ran all season with no issue. This season pump started up on 1st attempt but getting very noisy. I believe the bearings are going.

    1. Wait until motor completely breaks down.
    2. Replace motor.
    3. Replace with another pump.

    My initial thought was replace with a new 1.5 HP pump but would appreciate inputs on pump manufacturers and model types.

    -23,000 gallon in ground pool
    -Magnum Force Jacuzzi pump (1.5 HP / 230 V)
    -Pump Inbound: Drain, Spa Step drain, 2 skimmers
    -Pool outbound: 2 pool returns and spa step return (4 jets)
    -Valve mgmt allows me to isolate spa step (drain and 4 jets) using heater/pump just for the spa step

    inground, 23,000 gallons, vinyl liner, sand filter, 2 speed Whisperflo 1.5 HP, gas heater

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    JasonLion's Avatar
    Join Date
    May 2007
    Silver Spring, MD

    Re: Guidance For Pump Replacement

    If you are happy with the amount of jet action in the spa, one good approach is to replace the motor with a matching two speed motor. That will give you the same jet action you have now on high speed, and give you low speed for circulating the pool less expensively that you can now.

    One large factor in the decision is your electric rate. If electricity is expensive in your area it will be worth getting a variable speed pump instead.
    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

  3. Back To Top    #3

    Re: Guidance For Pump Replacement

    thanks for the idea about two speed. Can you suggest a pump model?
    inground, 23,000 gallons, vinyl liner, sand filter, 2 speed Whisperflo 1.5 HP, gas heater

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