Become a TFP Supporter Pool Math Forum Rules Pool School
Results 1 to 2 of 2

Thread: Calculate GPMs for Variable Speed Pump

  1. Back To Top    #1
    mkmscr's Avatar
    Join Date
    Mar 2013
    CT, USA

    Calculate GPMs for Variable Speed Pump

    I have a Hayward EcoStar Variable speed pump and I can't find any specs in the manual regarding GPMs. I know there are other factors that can play into this calculation. I am trying to figure out how long I need to run the pump to turn over 23000 gallons of water in one day with the least amount of power consumption. Any thoughts?
    17x27x37 (24000 gallons) Lagoon Vinyl liner, Hayward Eco VS Pump, Hayward 4350 DE Filter, Auto Pilot SWG, Savi LED Lighting, Maytronics Dolphin M4 Vacuum

  2. Back To Top    #2
    JasonLion's Avatar
    Join Date
    May 2007
    Silver Spring, MD

    Re: Calculate GPMs for Variable Speed Pump

    You don't need to figure out GPM, which is actually very difficult to find out without a meter, instead adjust the run time based on how the water looks. See the article in Pool School on finding your ideal pump runtime. For your pool I would try an initial guess of 12 hours and adjust from there.

    The most cost effective speed for an EcoStar is around 800 RPM. Double check that your skimmers still skim effectively at that speed and the SWG is still happy. If they don't you may need to use a higher speed.
    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

Posting Permissions

  • You may not post new threads
  • You may not post replies
  • You may not post attachments
  • You may not edit your posts