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Thread: Advantage to running the pump at a lower speed

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    Join Date
    Apr 2014
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    Houston,tx
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    24

    Advantage to running the pump at a lower speed

    Pool newbie here. I have a two speed pump but the pool tech that helped me "get started" said there was no real advantage to running the lower speed other than marginal energy savings. What did you mean by skimmer action?

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    JasonLion's Avatar
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    May 2007
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    Silver Spring, MD
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    37,879

    Re: Advantage to running the pump at a lower speed

    There is a large energy savings, usually around 50% saved on electricity by running on low speed.

    This shouldn't be an issue with a two speed. Variable speed pumps can be turned down to such a low speed that debris is no longer drawn into the skimmer(s). With a two speed the lower speed should not have this problem.
    19K gal, vinyl, 1/2 HP WhisperFlo pump, 200 sqft cartridge filter, AutoPilot Digital SWG, Dolphin Dynamic cleaning robot
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    Isaac-1's Avatar
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    May 2010
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    SW Louisiana
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    Re: Advantage to running the pump at a lower speed

    Different people mean different things by marginal electrical savings, and here on the gulf coast our electrical rates are relativley low compared to some parts of the country. Still depending on the size of the 2 speed pump you can probably save a couple of hundred dollars per year by running it twice as many hours on low instead of on high (moving the same amount of water). As 2 speed pumps tend to move about half as much water on low while drawing 1/4 the amount of power. The other thing most people do that wastes power is they run their pool pump / filters for too many hours per day, the only real way to know how much you should run your filter is through experimentation, keep shortening the run cycle until you start developing water clarity issues, then turn it back up a bit. The X hours per day are just ball park guidelines, and it is a BIG ballpark. Many members here have found they can successfully filter their pool with only 4 or 5 hours of filter run time on low speed, after spending years following industry standard one size fits all suggestion of 10-12 hours of filter run time per day.

    Ike
    Indoor 20x40 35,000 gallon vinyl pool with 1.5 HP 2 speed Jandy FloPro pump, Hayward EC75 Perflex DE filter, 11 4x12 Techno-Solis solar panels w/ Aquasolar controller, Aquabot Turbo T Robot Cleaner. Also LMI metering chlorine dispenser pump and HotSpring Jetsetter
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    Join Date
    Apr 2014
    Location
    Houston,tx
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    24

    Re: Advantage to running the pump at a lower speed

    Good info. As soon as I get my pump fixed, gonna try out the experiment. If you know why a pump might just go out, check out my other post. When I have some time tomorrow I will update my signature with my equipment. Been in this house for 6months and had a pool tech out twice spending 500+ and I'm still not sure what problems I had. Should have found this forum earlier

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