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Thread: Hayward Max Flow 1.5 Self Priming - Replacement Options?

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    Join Date
    May 2014
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    Hayward Max Flow 1.5 Self Priming - Replacement Options?

    Hey Guys,

    I'm thinking about replacing my older Hayward Max-Flow 1.5 HP self priming pump.
    I currently have a cartridge filter, but plan to change that to DE later this season.
    I'm interested in reducing power consumption and increasing versatility.

    I haven't decided between VS or 2 speed.

    What are your thoughts and what do you recommend?

    Thanks,

    Bryan
    25K In-Ground Vinyl, circa 1990. Hayward C800 with 1.5 HP Max-Flow Circa 1990???? In line Chlorinator. Raypak Heater.

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    JasonLion's Avatar
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    May 2007
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    Silver Spring, MD
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    Re: Hayward Max Flow 1.5 Self Priming - Replacement Options?

    First, do you have any water features, spa, waterfall, fountain? If not you can get a smaller pump, which will be more efficient.

    Second, 2-speed or VS mostly depends on your electric rates. Higher electric rates make the more expensive VS pump much easier to justify. What are you paying for electricity?
    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

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    Re: Hayward Max Flow 1.5 Self Priming - Replacement Options?

    No features and I'm paying about 0.16/kWh. I'm also looking into changing out my c800 cartridge for a DE or sand filter and adding a SWCG after my heater.

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    JasonLion's Avatar
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    Re: Hayward Max Flow 1.5 Self Priming - Replacement Options?

    With electricity around $0.16/kwh it is worth looking at one of the smaller VS pumps, perhaps the MaxFlo VS. The smaller VS pumps don't "play well" with automation systems, but work very well with a standard external timer. They tend to sell for a bit over $600, which should pay back in a reasonable amount of time. The larger VS pumps are better with automation systems, but they cost quite a bit more up front, and probably won't pay back in a reasonable amount of time given your electrical rates.
    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

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