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Thread: Minimax 100 - OK for Inground?

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    GADawgFan's Avatar
    Join Date
    Jul 2008
    Bremen, GA

    Minimax 100 - OK for Inground?

    Hi everyone.....I've got a good deal on a Pentair Minimax 100. It states that it's for an above ground pool. We've just installed a 15,000 gallon inground pool, so my btu needs aren't that high. Is there any reason why I could not install this above ground heater on my inground pool? It's tough being a newbie....
    New Pool: Goldline Aqua Logic, Hayward Pro Series Sand Filter, Hayward Heater, Spa, Polaris QT Blower, Gunite w/ Pebble Tec, 10K Gallons

    Old Pool: david-and-kristy-s-pool-build-t8676.html

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    launboy's Avatar
    Join Date
    Jun 2008
    S.E. Wisconsin

    Re: Minimax 100 - OK for Inground?

    I don't see any reason why it would be a problem. I think the only real difference between a heater that claims to be for IG use vs. an AG one is that the Inground heaters usually have a higher BTU rating because the pools usually hold more water.

    Then again, I'm no gas heater expert either, but if it were me I'd hook it up.

    18' x 42" Intex Easyset Pool, with 16' x 52" deep end in the middle. Approx. 5500 Gal.
    Hayward Power-Flo LX 1 HP, 100# Jacuzzi Brand Sand Filter(Piped underground so it looks nice) 8)
    3 - 2' x 20' Solar Pool Heater Panels(roof mounted)
    Goin' on 9 summers...NOBODY thought it would last this long.
    Buried Portable Spa sharing pumps and water with pool (Almost complete project)

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

    Re: Minimax 100 - OK for Inground?

    As long as your system is within the minimum/maximum flow rates for the heater, and you don't mind that it is only 100,000 BTUs, it will be fine for an in-ground pool. For the Pentair Minimax 100, the min is 20 GPM and the max is 80 GPM.
    19K gal, vinyl, 1/2 HP WhisperFlo pump, 200 sqft cartridge filter, AutoPilot Digital SWG, Dolphin Dynamic cleaning robot
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