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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: Pentair Intelliflo VS Pump, Pentair Quad 100 DE filter, Pentair EasyTouch control system, Pentair IC 40 SWG, Pentair Mastertemp 400,000 BTU gas heater, Pentair ScreenLogic wireless interface, Spa, Polaris QT Blower, Polaris 9450 pool cleaner, 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
    Creator of PoolMath and Pool Calculator. Other handy links: Support this site, TF Test Kits, Pool School

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