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Aquasure Fortitude Tri-Stage Iron Removal

Ranked #11 of 35 in Best Whole-House Water Filters (2026). Here is every spec we scored, where it came from, and how it compares.

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#11

Aquasure Fortitude Tri-Stage Iron Removal

Best for: Tri-stage whole-house iron system listed at 15 GPM with a 100,000-gallon capacity

2.7/10

What we like

    Watch out for

    • Micron rating not published by Aquasure
    • Warranty not published by Aquasure

    Score breakdown

    Filtration stages 22%
    Service or listed flow 30%
    Micron rating * 16%
    NSF/ANSI 42 or 53 named 20%
    Warranty * 12%

    * Not published by the manufacturer; scored at the lowest published value in this category, so an unpublished figure never outranks a published one.

    Filtration stages3
    Service or listed flow15 GPM
    Micron ratingNot listed
    NSF/ANSI 42 or 53 namedNo
    WarrantyNot listed
    Stages (maker)Tri-stage (official product name)
    Flow rate (maker)Maximum flow rate of 15 GPM with 1-inch NPT connections (official page)
    Micron rating (maker)Not listed
    NSF/ANSI 42 or 53 (maker)Not listed
    Warranty (maker)Not listed
    Capacity (maker)100K gallon capacity filtration (official product name)
    PriceCheck price
    Check price at Amazon
    Specs source:

    How it compares

    Open the full comparison table

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    #6 · 3-stage 10-inch whole-house sediment and carbon-block filter listed at 15 GPM
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    #7 · 3-stage 10-inch whole-house filter with a clear housing, listed at 15 GPM
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    #10 · 3-stage 20-inch KDF whole-house filter listed at 15 GPM
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    #12 · 4-stage whole-house filter; official page names NSF/ANSI 372 only
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    #13 · 2-stage 10-inch whole-house sediment and CTO filter listed at 15 GPM
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