Become a TFP Supporter Pool Math Forum Rules Pool School
Results 1 to 4 of 4

Thread: New pool owner wondering about pump speeds

  1. Back To Top    #1

    Join Date
    Nov 2014
    Location
    Phoenix, Arizona
    Posts
    2

    New pool owner wondering about pump speeds

    Hi guys (and thanks for reading)

    I'm a new pool owner wondering what RPM I should run my pump. I have a Hayward Tristar 1.8HP VSP that can run between 1000-3400 RPM, but this thing is pretty loud at the high speeds and I don't know if it is necessary or cost effective. It is currently set up to run at 3100~ RPM for 4 hours then about 1700~ RPM for another 4 hours from midnight to 8am.

    Does this seem about right or is it overkill? Also when heating the spa does it really need to be at maximum speed, too?


    Some more information:
    The pool is roughly 11,000 gal, spa is around 1000 gal. 400k BTU heater, pipes look about 2.5 inch outside diam. 400sqft cart filter. Not sure what the TDH would be for the whole system honestly. Oh and this is in Phoenix, AZ.


    Appreciate any thoughts / advice! And let me know if I need more info

  2. Back To Top    #2
    JasonLion's Avatar
    Join Date
    May 2007
    Location
    Silver Spring, MD
    Posts
    37,879

    Re: New pool owner wondering about pump speeds

    Welcome to TFP!

    You want to run at the lowest speed that still works reliably. The speed you choose should be high enough so that the skimmers still work and your pool heater is happy. The only time you want to run on a higher speed is if you have a pool cleaner powered by the main pump or are manually vacuuming. The only way to find out what the ideal speed is, is to experiment. Most likely your setup will be limited by the heater, as that is very likely to need a higher speed than the skimmers. Turn on the heater and then vary the speed until the heater shuts down. Then use a speed a bit faster than the speed at which the heater shut down.
    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

    Join Date
    Nov 2014
    Location
    Phoenix, Arizona
    Posts
    2

    Re: New pool owner wondering about pump speeds

    Quote Originally Posted by JasonLion View Post
    Welcome to TFP!

    You want to run at the lowest speed that still works reliably. The speed you choose should be high enough so that the skimmers still work and your pool heater is happy. The only time you want to run on a higher speed is if you have a pool cleaner powered by the main pump or are manually vacuuming. The only way to find out what the ideal speed is, is to experiment. Most likely your setup will be limited by the heater, as that is very likely to need a higher speed than the skimmers. Turn on the heater and then vary the speed until the heater shuts down. Then use a speed a bit faster than the speed at which the heater shut down.
    Thanks! I will play around with it and see what works best

  4. Back To Top    #4

    TFP Guide

    Kiss4aFrog's Avatar
    Join Date
    May 2013
    Location
    Hudson, WI
    Posts
    2,602

    Re: New pool owner wondering about pump speeds

    Welcome to the forum BluePool
    '70s IG Vinyl 32K gal, Lazy L, Hayward SuperPump 1.5hp 120V, S240 Sand Filter W/DE
    Solar Blanket, Well Water, Borax Added, TF-100 tester. ? too cold
    1979, 275gal Conway Emerald Spa P-100-2, ES-2 Spa Pack, bromine floater, indoor
    TF-100, Best test kit - TFTestkits.net
    Please help keep the lights on, become a TFP Supporter!

Posting Permissions

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