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Thread: dedicated Spa Jet pump, waterway jets

  1. Back To Top    #1

    Join Date
    Oct 2013
    San Diego, CA

    dedicated Spa Jet pump, waterway jets

    I would like to use 10 waterway poly storm jets in the spa with 10GPM each, so 100GPM.

    According to Hydraulics 101,
    I would need perhaps a 3" suction and 3" return (or 2 2.5" return spa loops)
    It seems I might be at 16' of head, plus pump and jets.

    Hard to figure out jet head loss but I saw a thread that mentioned waterway and said 35' head loss.

    Based on all this it seems like a dedicated 2HP pump might be fine?

    Any reason to go with VF or VS for a spa jet pump?

    Anyone have any experience with the triple jet assemblies from waterway jets?
    O/B Pool: 11,000 gal, 32x15 with baja step, 7ft spa with Waterway jets, Jandy Aqualink RS6 with Pentair IntellifloXF pump. SWG, iAqualink, LED lights, cover-pools auto cover.

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

    Re: dedicated Spa Jet pump, waterway jets

    The better variable speed pumps use permanent magnet motors, which have a slightly better inherent efficiency than a regular pump, and so save on electrical costs. Since you are in CA, and have high electrical costs that might make a VS worth it if you plan to use the spa quite a lot. The other advantage of a VS pump is that you can dial in exactly how much jet action you want to have. With a single speed pump you just hope you calculated everything correctly.
    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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