Discount Water Filters and Air Filters at Discount Filter Store.com

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Reverse Osmosis Water Filter Replacement Cartridges

Keep your reverse osmosis system up and running smooth with a new reverse osmosis water filter.

Your reverse osmosis water filter plays a crucial role in your reverse osmosis filtration system, so it’s important to change it out periodically (ideally once every 6-12 months). By doing so, you’ll extend the life of not only your entire reverse osmosis system but also the life of your RO membrane.

Below you’ll find over 40+ reverse osmosis water filter brands and sets, at a price guaranteed to beat the big box store prices. All of our reverse osmosis water filters are included in our 100% Price Match Guarantee. Meaning if you find a RO water filter priced somewhere else for less than our price, we’ll match the lower price. Shopping for a new RO water filter doesn’t get much better than that.

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  • 3M Aqua-Pure RO3RC Reverse Osmosis Pre and Post Filter Set
  • 3M Aqua-Pure AP5527 Reverse Osmosis Filter
  • 3M Aqua-Pure AP124-3 Water Filter

    AP124-3 3M Aqua-Pure Replacement Water Filter

    $29.99
    MSRP: $35.64
    Save 16%
  • 3M Aqua-Pure AP124 Whole House Water Filter Cartridge

    AP124 3M Aqua-Pure Whole House Filter Replacement Cartridge

    $12.99
    MSRP: $17.24
    Save 25%
  • AP117RO 3M Aqua-Pure Reverse Osmosis Filter

    3M Aqua-Pure AP117RO Reverse Osmosis Filter

    $25.69
    MSRP: $38.99
    Save 34%

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