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Thread: Replacing 2HP motor (not pump) with VS - need advice please

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    Replacing 2HP motor (not pump) with VS - need advice please

    I am looking at replacing the 2HP motor on my Whisperflo WF-8 pump with that of a variable speed motor. I am trying to do my due diligence and need advice.

    Keep in mind I'll not be operating this at the higher speeds as I don't actually use the attached spa as a spa, and there is a separate booster type thing (technical term, I've only used in once since I've lived here) if I really need bubbles.

    I have seen motors that are rated from .5-1.5 HP and also .5-3 HP. I have 2" piping. Which one do I need to go with that does not involve me having to change the impeller, or do I need to change the impeller regardless, and to what size? (the impeller part is what is getting me confused.)

    Thanks in advance!
    IG gunite freeform pool with attached spa, stone surround, 18,000 gallons, Pentair Tagelus TA60, Pentair Whisperflo WF-8 pump.

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    InyoRob's Avatar
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    Feb 2017

    Re: Replacing 2HP motor (not pump) with VS - need advice please

    Hello ConcreteGardensTX - You could use the Century model ECM27SQU as a variable speed motor replacement for the Pentair Whisperflo WF-8. This is a 2.7 total HP motor. You would use your existing impeller with the ECM27SQU.

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