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

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Water Filtration Systems & Filters

Discount Filter Store carries a wide variety of water filters and filtration systems to make sure that you have clean water everywhere you need it. We offer camping water filters, RV filters, water bottles for travelers on the go. Purify your office or home’s drinking water with countertop filter systems, commercial grade filters, and whole house filter systems. Our filters are protected by our 100% Price Match Guarantee. We are happy to offer you the lowest possible price on our filters, matching any lower price listed by competitors.

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Items 1 to 48 of 478 total

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  • KDF55-20 Tier1 Replacement Filter Cartridge
  • SED-100DM Tier1 Metered Sediment Reduction Backwash Water Filter System
  • P50-20 Tier1 Polypropylene Sediment Water Filter Cartridge
  • CBC-BB Pentek Comparable Water Filter Cartridge by Tier1

    CBC-BB Pentek Comparable Water Filter Cartridge by Tier1

    $42.99
    MSRP: $60.59
    Save 29%
  • CBC-20 Pentek Comparable Water Filter Cartridge by Tier1

    CBC-20 Pentek Comparable Water Filter Cartridge by Tier1

    $25.99
    MSRP: $32.77
    Save 21%
  • FLOPLUS 20BB Comparable Water Filter Cartridge by Tier1

    FLOPLUS-20BB Pentek Replacement Filter Cartridge by Tier1

    $57.99
    MSRP: $136.99
    Save 58%
  • KDF85-10BB Tier1 Water Filter

    KDF85-10BB Tier1 Water Filter

    $81.99
    MSRP: $86.24
    Save 5%
  • KDF85-20 Tier1 Water Filter
  • NCP-BB Pentek Comparable Whole House Carbon Filter by Tier1
  • SDC-45-1005 Hydronix Whole House Filter Replacement by Tier1

    SDC-45-1005 Hydronix Whole House Filter Replacement by Tier1

    $11.99 MSRP: $24.64
    Save 51%
  • SDC-45-2005 Hydronix Whole House Filter Replacement by Tier1

    SDC-45-2005 Hydronix Whole House Filter Replacement by Tier1

    $20.99 MSRP: $25.76
    Save 19%
  • CTO2-HD20 Hydronix Whole House Filter Replacement by Tier1

    CTO2-HD20 Hydronix Whole House Filter Replacement by Tier1

    $47.99 MSRP: $69.77
    Save 31%
  • MAXETW-FF20 Matrikx Whole House Filter Replacement by Tier1

    MAXETW-FF20 Matrikx Whole House Filter Replacement by Tier1

    $47.99 MSRP: $69.77
    Save 31%
  • AP-GRMB-05PP-10UB Aquapure Whole House Filter Replacement by Tier1
  • SDC-25-1005 Hydronix Whole House Filter Replacement by Tier1
  • HAC-10-LR-W Harmsco Whole House Wilter Replacement by Tier1

    HAC-10-LR-W Harmsco Whole House Wilter Replacement by Tier1

    $8.49 MSRP: $11.49
    Save 26%
  • AP1001 3M Aqua-Pure Comparable Whole House Sediment Water Filter by Tier1
  • AP-GRMB-01PP-10UB 3M Aqua-Pure Comparable Whole House Sediment Water Filter by Tier1
  • P1-D Culligan Comparable Whole House Sediment Water Filter by Tier1
  • SBC-25-1001 Hydronix Comparable Whole House Sediment Water Filter by Tier1
  • SDC-25-1001 Hydronix Comparable Whole House Sediment Water Filter by Tier1
  • GX01-9-78 Hytrex Comparable Whole House Sediment Water Filter by Tier1
  • GX05-9-78 Hytrex Comparable Whole House Sediment Water Filter by Tier1
  • AP-GRMB-20PP-20UB Aquapure Comparable Sediment Water Filter by Tier 1
  • SDC-25-2020 Hydronix Comparable Sediment Water Filter by Tier1
  • WP-5BB97P Pentek Comparable Replacement Filter Cartridge by Tier1
  • S1-20 Pentek Comparable Whole House Filter Replacement Cartridge by Tier1
  • 3WH-HDPL-F01 Filtrete Comparable Whole House Water Filter by Tier1
  • SPC-45-1050 Hydronix Comparable Whole House Sediment Water Filter by Tier1
  • RS6 OmniFilter Comparable Whole House Water Filter by Tier1

    RS6 OmniFilter Comparable Whole House Water Filter by Tier1

    $15.99 MSRP: $17.99
    Save 11%
  • CQE-RC-04036 Crystal Quest Carbon Block Water Filter Cartridge Comparable by Tier1
  • 22006 Hydrologic Comparable Whole House Water Filter by Tier1
  • MATRIKX-CTO2-HD20 KX Technologies MatrikX Comparable Whole House Filter Replacement Cartridge by Tier1
  • C2-02 Viqua Comparable Carbon Whole House Filter by Tier1

    C2-02 Viqua Comparable Carbon Whole House Filter by Tier1

    $47.99 MSRP: $69.77
    Save 31%
  • SDC-45-2005 Hydronix Comparable Whole House Replacement Sediment Filter Cartridge by Tier1
  • SDC-45-2010 Hydronix Comparable Sediment Water Filter Cartridge by Tier1
  • FXHSC GE Comparable Whole House Water Filter by Tier1

    FXHSC GE Comparable Whole House Water Filter by Tier1

    $15.99 MSRP: $17.99
    Save 11%
  • 3M Aqua-Pure AP810 Comparable Whole House Filter Replacement Cartridge by Tier1
  • Funbottle-dfs-green Tier1 Water Bottle - Green

    EcoFriendly Water Bottle: Green FunBottle

    $4.29
    MSRP: $12.99
    Save 67%
  • 54846 Tier1 Reverse Osmosis Tank Pressure Gauge

    54846 Tier1 Reverse Osmosis Tank Pressure Gauge

    $8.99
    MSRP: $12.64
    Save 29%
  • 6570090 Tier1 Plastic Tank Ball Valve
  • 6570590 Tier1 Plastic Tank Ball Valve

    6570590 Tier1 Plastic Tank Ball Valve

    $6.99
    MSRP: $10.34
    Save 32%

Items 1 to 48 of 478 total

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