Become a TFP Supporter Pool Math Forum Rules Pool School
Results 1 to 8 of 8

Thread: Oversized pump - is this a major problem?

  1. Back To Top    #1

    Join Date
    Jun 2015
    Location
    johnston ri
    Posts
    4

    Oversized pump - is this a major problem?

    Hello,

    When I purchased my home many years ago it came with a 24 foot, 4 foot deep above ground pool. It had a jacuzzi filter/pump combo. When the pump died, I was sold a 1.5 HP Hayward pump rated at 70 GPM, and I kept the filter. Many years went by without issue, then the screws on the jacuzzi filter snapped, so I just purchased a Hayward replacement, keeping the 1.5 hp pump.

    Now that I am looking into it more, I see the filter says 35 GPM is recommended, so my 70 GPM pump is too much. (and apparently has been too much for years, but again, no issues)

    I have searched a lot, but cannot find a definitive answer - is this a MAJOR problem? I see that it may not be efficient in cleaning, and I may be paying too much to run it, but is my new filter in danger? Should I run to downgrade the pump?

    Thank you!

  2. Back To Top    #2

    In the Industry

    duraleigh's Avatar
    Join Date
    Apr 2007
    Location
    Sebring, Florida
    Posts
    30,084

    Re: Oversized pump - is this a major problem?

    Welcome to the forum.

    I cannot figure out what type of filter you have?
    Dave S.
    42k vinyl and concrete pool, 1.5hp pump, 140gpm filter
    TFTestkits , PoolMath , Pool School

  3. Back To Top    #3
    Mod Squad jblizzle's Avatar
    Join Date
    May 2010
    Location
    Tucson, AZ
    Posts
    37,389

    Re: Oversized pump - is this a major problem?

    Welcome to TFP!!!

    Please add your pool details to your signature as described HERE as it will help us help you.

    Pumps do not typically move near the amount of water that the spec states for optimal no head loss conditions.
    Jason, TFP Moderator
    18k IG pebblesheen pool, Hayward ProLogic P4 w/ T-15 SWG, Pentair 1HP 2-speed Superflo, Hayward 6020 DE filter
    500 sqft Heliocol solar panels, ThePoolCleaner, TF-100 test kit w/ SpeedStir
    Pool School + Test Kit + PoolMath = A TROUBLE FREE POOL
    If you found TFP helpful and we saved you money ... Become a TFP Supporter!

  4. Back To Top    #4

    Join Date
    Jun 2015
    Location
    johnston ri
    Posts
    4

    Re: Oversized pump - is this a major problem?

    Thank you for the welcomes - I have a sand filter that has 150 lbs of new sand in it.
    AG 24" round, 4" deep
    Pump - Hayward Power Flo LX 1.5 HP
    Filter - Hayward Pro Series S180T

  5. Back To Top    #5
    Mod Squad jblizzle's Avatar
    Join Date
    May 2010
    Location
    Tucson, AZ
    Posts
    37,389

    Re: Oversized pump - is this a major problem?

    Can you add what make/model of pump you have? Hayward probably makes 15+ different 1.5HP pumps.

    In any case, a 21" sand filter should not have a problem with a 1.5HP pump ... 35GPM seems a little low for a filter that size. That could be a commercial pool use rate where residential can run a good bit higher.
    Jason, TFP Moderator
    18k IG pebblesheen pool, Hayward ProLogic P4 w/ T-15 SWG, Pentair 1HP 2-speed Superflo, Hayward 6020 DE filter
    500 sqft Heliocol solar panels, ThePoolCleaner, TF-100 test kit w/ SpeedStir
    Pool School + Test Kit + PoolMath = A TROUBLE FREE POOL
    If you found TFP helpful and we saved you money ... Become a TFP Supporter!

  6. Back To Top    #6

    Join Date
    Jun 2015
    Location
    johnston ri
    Posts
    4

    Re: Oversized pump - is this a major problem?

    Sure thing, thanks

    Pump - Power Flo LX SP1515-Z-1-BC
    Filter - Pro Series S180T - which I now see is 18"...I am positive the "pool guy" said we'd upgrade to 21...
    AG 24" round, 4" deep
    Pump - Hayward Power Flo LX 1.5 HP
    Filter - Hayward Pro Series S180T

  7. Back To Top    #7
    Mod Squad jblizzle's Avatar
    Join Date
    May 2010
    Location
    Tucson, AZ
    Posts
    37,389

    Re: Oversized pump - is this a major problem?

    A 21" filter would be more in line with the size I would recommend, although with your shorter season, the 18" should be adequate.

    Put that pump info in your Sig ... well just the Power Flo LX part is enough.

    Your setup should be fine.
    Jason, TFP Moderator
    18k IG pebblesheen pool, Hayward ProLogic P4 w/ T-15 SWG, Pentair 1HP 2-speed Superflo, Hayward 6020 DE filter
    500 sqft Heliocol solar panels, ThePoolCleaner, TF-100 test kit w/ SpeedStir
    Pool School + Test Kit + PoolMath = A TROUBLE FREE POOL
    If you found TFP helpful and we saved you money ... Become a TFP Supporter!

  8. Back To Top    #8

    Join Date
    Jun 2015
    Location
    johnston ri
    Posts
    4

    Re: Oversized pump - is this a major problem?

    Good news. Thanks for your time
    AG 24" round, 4" deep
    Pump - Hayward Power Flo LX 1.5 HP
    Filter - Hayward Pro Series S180T

Posting Permissions

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