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Thread: Need Dual Speed Pump Recomendation

  1. Back To Top    #1

    Join Date
    Apr 2011
    Location
    Phoenix Arizona
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    4

    Need Dual Speed Pump Recomendation

    I have a 11,000 gal pool, currently with a Hayward Super Pump 1.0 HP and 1.5 SF (about 8 yrs old).
    It has 2" Piping an a Hayward C1750 Cartridge Filter currently running about 10 psi at the cartridge filter.
    Also has a Hayward Navigator, and a Small Rock Waterfall

    I am in the process of converting to Salt water with a Compupool CPSC 36 which is not installed yet.
    and looking to upgrade the pump. Definitely thinking of a two speed pump energy efficient pump. I think I need two speed so I can run the salt cell long enough without filtering the pool

    I was thinking of a 3/4 Pentair WFDS-3, however that pump is only 115v and they recommend 12 gauge wire for a 100' run, which I only have 14 gauge wire there now.

    So I started looking at the 230 volt models and am thinking of the WFDS-4 SFHP 1.65 or the
    Or a Pentair SuperFlo (SF-N2-1A) SFHP = 1.25. These two pumps have almost identical curves. and the SuperFlo is about $200 less.

    So what should I do? SuperFlo, WhisperFlo WFDS-3, WFDS-4 Or something else (it does not have to be pentair)

    Also, does anyone know why the WhisperFlo is $200 more than the SuperFlo (they look the same to me)?
    1) 11,000 gallons
    2) Hayward Sta Clear C17502 cartridge filter (175 sq ft) 125 GPM rating
    3) In Ground w/2"plumbing
    4) Pebble-Sheen finish
    5) 1.0 HP (1.5 with SF) Hayward Super Pump (runs at 10 psi at the filter)

  2. Back To Top    #2
    Mod Squad Bama Rambler's Avatar
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    Jun 2009
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    SouthWest Alabama
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    Re: Need Dual Speed Pump Recomendation

    The whisperflo is a little more efficient then the superflo.

    If you look at the curves you will see the difference
    Superflo =
    ~ 30gpm at 10 feet of head on low
    ~ 38gpm at 60 feet of head on high.
    Whisperflo =
    ~ 50gpm at 10 feet of head on low
    ~ 78gpm at 60 feet of head on high
    So you see the reason for the price difference.
    Dave J. TFP Moderator
    24' x 52" Round AGP. 2hp/¼hp SPL Power-Flo 2-speed pump. 200sqft Waterway Cartridge Filter. 45MHP2(3GPD) Stenner Peristaltic Pump
    Pool School ----- Pool Math ----- TF-Test Kit

  3. Back To Top    #3
    mas985's Avatar
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    May 2007
    Location
    Pleasanton, CA
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    11,482

    Re: Need Dual Speed Pump Recomendation

    The Superflo is a smaller pump than the Whisperflo (1.25 THP vs 1.65 THP) so the head curve will be slightly lower for the Superflo and slightly more energy efficient as well. THe WFDS-3 is more comparable to the Superflo and is more efficient as well.
    Mark
    Hydraulics 101; Pump Ed 101; Pump/Pool Spreadsheets; Pump Run Time Study; DIY Acid Dosing; DIY Cover Roller
    18'x36' 20k plaster, MaxFlo SP2303VSP, Aqualogic PS8 SWCG, 420 sq-ft Cartridge, Solar, 6 jet spa, 1 HP jet pump, 400k BTU NG Heater

  4. Back To Top    #4

    Join Date
    Apr 2011
    Location
    Phoenix Arizona
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    Re: Need Dual Speed Pump Recomendation

    I am not sure what I was looking at yesterday, However now I see the Whisperflo definitely has a better head curve then the superflo. Since I really don't need more GPM (I think the Hayward SuperPump 1.5 THP is probably very similar to the Superflow energy efficent 1.25 THP. I am leaning towards the Superflo

    Is there any other feature I am missing like pump longevitiy or better build in the Whisperflo?
    1) 11,000 gallons
    2) Hayward Sta Clear C17502 cartridge filter (175 sq ft) 125 GPM rating
    3) In Ground w/2"plumbing
    4) Pebble-Sheen finish
    5) 1.0 HP (1.5 with SF) Hayward Super Pump (runs at 10 psi at the filter)

  5. Back To Top    #5
    JasonLion's Avatar
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    May 2007
    Location
    Silver Spring, MD
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    37,879

    Re: Need Dual Speed Pump Recomendation

    The WhisperFlo line moves more water per watt of electricity than the other pumps you are talking about. You can get the same water flow you are used to by moving to the next smaller size of WhisperFlo.
    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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