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Thread: Energy efficient or standard whisperflo

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    Join Date
    Mar 2011
    Location
    Baton Rouge, LA
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    3

    Energy efficient or standard whisperflo

    My pump is on the way out, so now to decide how to replace it.

    It is/was a 2hp uprated Whisperflo, running on 230V.

    I'm looking at basically an in-kind replacement, but noticed the energy efficient motor versions as an option. Both follow the same pump curve, but the energy efficient version is 230V only, vs 115/230V for the standard.

    I'm estimating my usage to be around 300 hours/mo @ 230x11.2A=2576W (standard) or 230x8.8=2024W (energy eff). I think this works out to around a 130 kWh savings, which at 0.10/kWh pays out pretty quickly on the pump cost. Am I missing anything here?

    Any other suggestions?

    Thanks,
    28000 gal IG gunnite + attached spa w/ waterfall
    Hayward Aqua Rite SWG
    Pentair 420 Cartridge Filter
    Pentair Heatpump (never used)
    Pentair Whisperflow 2.2hp - WF-28 (1.5hp impeller)

  2. Back To Top    #2

    Join Date
    Mar 2011
    Location
    Baton Rouge, LA
    Posts
    3

    Re: Energy efficient or standard whisperflo

    I'm not willing to make the investment for variable speed, but we are considering the two-speed whisperflow as well.
    28000 gal IG gunnite + attached spa w/ waterfall
    Hayward Aqua Rite SWG
    Pentair 420 Cartridge Filter
    Pentair Heatpump (never used)
    Pentair Whisperflow 2.2hp - WF-28 (1.5hp impeller)

  3. Back To Top    #3
    dmanb2b's Avatar
    Join Date
    Apr 2009
    Location
    NY
    Posts
    3,728

    Re: Energy efficient or standard whisperflo

    How big is the pool? Any special features, such as a waterfall or spa, infinity edge etc? A 2HP is usually an oversized pump for most pools, but not always, when certain features are present.
    24'x52" AGP (13,500 Gallons), Intex SWG, (2)Solar Bear 4x20 panels, Hayward S220T Filter, 1/2hp Pentair Superflo

    Pool School, TFTestKits, Pool Calculator

  4. Back To Top    #4

    Join Date
    Mar 2011
    Location
    Baton Rouge, LA
    Posts
    3

    Re: Energy efficient or standard whisperflo

    I'm estimating the pool being around 28000 gallons + spa with overflow waterfall, and a pretty high water flow slide (Xstream brand - maybe up to 35 gpm)

    other components:
    Aquarite SWG
    Pentair 420 cartridge filter
    Heat pump

    Also - I meant to specify uprated to 2.2 SFHP (2HP w/ 1.1SF)
    28000 gal IG gunnite + attached spa w/ waterfall
    Hayward Aqua Rite SWG
    Pentair 420 Cartridge Filter
    Pentair Heatpump (never used)
    Pentair Whisperflow 2.2hp - WF-28 (1.5hp impeller)

  5. Back To Top    #5
    mas985's Avatar
    Join Date
    May 2007
    Location
    Pleasanton, CA
    Posts
    11,482

    Re: Energy efficient or standard whisperflo

    The namplate amp ratings are fairly worthless and don't really give you a good idea of power draw in operation so I don't think you can really compare the pumps that way. But given that you have a spa and need the higher flow rates, you will save a lot more money with a two speed pump. In a typical pool, a WFDS-28 will draw about 2195 watts (90 GPM) on high speed and 415 watts (45 GPM) on low speed. So you can use high speed for the spa and low speed for general circulation. Overall, this will save you much more money over the long run than a high efficiency single speed pump.
    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

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