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Thread: How many pumps in a residential spa/jacuzzi?

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    Cool How many pumps in a residential spa/jacuzzi?

    I'm a certified pool operator, but I've only worked on one pool and one spa for the last 13 years. Our spa at work has 3 pumps and 1 blower. 1 pump for the filter at 1HP, 2 pumps for the spa jets at 1.5 HP and one blower, which blows air into the jets.

    I don't have any experience with residential spas. The ones I've seen only have one pump? One pump does the job of filtering and putting out the jets? I've seen spas with timers and controls on the spa itself. If there's only one pump, then how do the spa jets work? Do the controls increase the pump motor RPMs?
    -38,000 gallon pool and 1600 gallon spa
    -Triton II TR140 sand filter
    -In ground

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    bobodaclown's Avatar
    Join Date
    Apr 2011
    Murrieta, CA

    Re: How many pumps in a residential spa/jacuzzi?

    Not positive but a 2 speed pump might be what is going on.
    Murrieta, CA. 15K (Est) pool/spa. Hayward Tristar SP3220EE 2.70HP pump, Hayward Swimclear Cartridge filter C4025 425sqft (PA106), Pentair Mastertemp 400 heater. TF-100/Speedstir

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    JasonLion's Avatar
    Join Date
    May 2007
    Silver Spring, MD

    Re: How many pumps in a residential spa/jacuzzi?

    There are a number of combinations. Basic spas have a one speed pump that is always running the jets (which gives you circulation as well as a mild jet effect) and a separate control to turn air on/off. A few have two speed pumps, as bobaclown suggested. A fair number have two pumps, with one dedicated to circulation. The jets are typically venturi jets that draw air in without a blower, though some fancier models include blowers. Likewise, some higher end models include more than one jet pump.
    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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