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Thread: 120v or 240v spa blower?

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    sag365's Avatar
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    Jan 2015
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    120v or 240v spa blower?

    I am replacing my existing 240v spa blower. The spa is only a small half moon, seats 5, adjacent to the pool with spillover. Since the existing electrical circuit, connected to a dial Intermatic timer, is 240v, the existing blower is 240v, no choice.

    Since I am putting in a new 100amp sub panel, should I stay with 240v for the new blower, or will 120v be sufficient? Each come in the same HP choices, so what's the difference?

    Thanks.
    16k gal, IG pool and spa, pool 29x14, pebble, 1983, 1.5" plumbing, Pentair Intelliflo VSP, Pentair Quad DE, Zodiac Aqualink Z4-PSi, AquaRite T15 SWG, Aquatherm AT115

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    JasonLion's Avatar
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    Re: 120v or 240v spa blower?

    The differences are minor. 240 volt circuits can get away with thinner, less expensive, wire compared to 120 volt circuits. On the other hand, 240 volt circuits require larger more expensive circuit breakers.
    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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    sag365's Avatar
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    Re: 120v or 240v spa blower?

    Thanks. If it has nothing to do with output, and is just a wiring issue, I might as well just go with 120v.
    16k gal, IG pool and spa, pool 29x14, pebble, 1983, 1.5" plumbing, Pentair Intelliflo VSP, Pentair Quad DE, Zodiac Aqualink Z4-PSi, AquaRite T15 SWG, Aquatherm AT115

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