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

When we protect your filter purchase with our No Worries Guarantee, we mean it!

No Worries...
  • Your filters are guaranteed to be the right fit!
  • Our products are price match guaranteed!
  • Our customer service team is guaranteed to answer your call!
  • You’re guaranteed to find expert help!

Learn more about our No Worries Guarantee

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.

Items 1 to 48 of 56 total

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  • 22110 Hydrologic SmallBoy Replacement Carbon Filter - Green
  • AF-20-2015 Aries Comparable Sediment Water Filter by Tier1
  • AF-10-2210 Aries Comparable Sediment Water Filter by Tier1

    AF-10-2210 Aries Comparable Sediment Water Filter by Tier1

    $36.99
    MSRP: $56.39
    Save 34%
  • EPM-20 Pentek Comparable Whole House Water Filter by Tier1

    EPM-20 Pentek Comparable Whole House Water Filter by Tier1

    $11.99
    MSRP: $20.99
    Save 43%
  • EPM-20BB Pentek Comparable Whole House Water Filter by Tier1
  • AP-GRMB-10PP-20UB Whole House Replacement Cartridge by 3M Aqua-Pure
  • WFPF13003B DuPont Universal Whole House Filtration System
  • APRC1-P AquaPatrol Ice Machine Replacement Water Filter

    APRC1-P AquaPatrol Ice Machine Replacement Water Filter

    $58.05
    MSRP: $94.99
    Save 39%
  • Pentair HEPP10-40DB Pureflex High Efficiency

    Pentair HEPP10-40DB Pureflex High Efficiency

    $93.99
    MSRP: $113.99
    Save 18%
  • Pentair HEPP10-30DB Pureflex High Efficiency Cartridge

    Pentair HEPP10-30DB Pureflex High Efficiency Cartridge

    $107.99
    MSRP: $130.99
    Save 18%
  • Pentair NEPP12-40DB Pureflex Pleated Polypropylene Cartridge
  • SDC-45-2010 Hydronix Water Filter Cartridge

    SDC-45-2010 Hydronix Sediment Water Filter Cartridge

    $21.99 MSRP: $31.73
    Save 31%
  • EPM-20 Pentek Whole House Water Filter

    Pentek EPM-20 Whole House Water Filter Replacement Cartridge

    $15.99 MSRP: $19.34
    Save 17%
  • EPM-20BB Pentek Whole House Filter Cartridge

    EPM-20BB Pentek Whole House Filter Replacement Cartridge

    $43.99 MSRP: $55.65
    Save 21%
  • Pentek EPM-BB Replacement Water Filter Cartridge

    Pentek EPM-BB Water Filter Cartridge Replacement

    $26.99 MSRP: $34.49
    Save 22%
  • Pentek NCP-20 Whole House Water Filter Replacement Cartridge

    Pentek NCP-20 Whole House Water Filter Replacement Cartridge

    $14.99 MSRP: $20.57
    Save 27%
  • NCP-20BB Pentek Whole House Filter Replacement

    NCP-20BB Pentek Whole House Filter Replacement Cartridge

    $34.99 MSRP: $48.81
    Save 28%
  • NCP-BB Pentek Whole House Water Filter

    NCP-BB Pentek Whole House Filter Replacement Cartridge

    $32.99 MSRP: $36.34
    Save 9%
  • EPM-BB Pentek Comparable Carbon Whole House Water Filter

    EPM-BB Pentek Comparable Whole House Water Filter by Tier1

    $17.99 MSRP: $30.99
    Save 42%
  • Pentek WS-10 Water Softening Water Filter

    Pentek WS-10 Water Softening Filter

    $19.99 MSRP: $24.83
    Save 19%
  • SDC-45-1010 Hydronix Comparable Sediment Water Filter by Tier1
  • SDC-45-2010 Hydronix Comparable Sediment Water Filter by Tier1
  • PB1-HD20 KX Matrikx Comparable Whole House Carbon Water Filter by Tier1
  • Hydronix SDC-25-4010 Polypropylene Sediment Filter

    Hydronix SDC-25-4010 Polypropylene Sediment Filter

    $12.99
    MSRP: $14.34
    Save 9%
  • Omnipure ELF-10M-P Carbon Block with Polyphosphate

    Omnipure ELF-10M-P Carbon Block with Polyphosphate

    $47.99
    MSRP: $50.34
    Save 5%
  • Pentek PD-10-30 Polypropylene Sediment Filter

    Pentek PD-10-30 Polypropylene Sediment Filter

    $19.99
    MSRP: $22.34
    Save 11%
  • CW-F-D Culligan Level 3 Whole House Filter Replacement Cartridge (2-Pack)
  • W9240002 Doulton Specialty Replacement Filter Cartridge
  • 22006 Hydrologic BigBoy Replacement Carbon Filter - Green

    22006 Hydrologic BigBoy Carbon Filter (Green)

    $45.05
    MSRP: $63.24
    Save 29%
  • CB-25-2010 Hydronix Replacement Filter Cartridge

    CB-25-2010 Hydronix Replacement Filter Cartridge

    $15.99
    MSRP: $23.99
    Save 33%
  • CB-45-2010 Hydronix Replacement Filter Cartridge

    CB-45-2010 Hydronix Replacement Filter Cartridge

    $38.99
    MSRP: $52.99
    Save 26%
  • SDC-45-1010 Hydronix Whole House Replacement Sediment Filter Cartridge
  • NCP-10 Pentek Undersink Filter Replacement Cartridge

    NCP-10 Pentek Undersink Filter Replacement Cartridge

    $10.69
    MSRP: $15.99
    Save 33%
  • PCF1-20MB Pentek Whole House Filter Replacement Cartridge

    PCF1-20MB Pentek Whole House Filter Replacement Cartridge

    $42.99
    MSRP: $49.67
    Save 13%
  • WP10BB97P Pentek Whole House Filter Replacement Cartridge

    WP10BB97P Pentek Whole House Filter Replacement Cartridge

    $17.99
    MSRP: $19.31
    Save 7%
  • WS-20 Pentek Water Softening Filter

    WS-20 Pentek Water Softening Filter

    $26.99
    MSRP: $35.64
    Save 24%
  • WS-20BB Pentek Whole House Filter Replacement Cartridge

    WS-20BB Pentek Whole House Filter Replacement Cartridge

    $45.99
    MSRP: $52.08
    Save 12%
  • PX10-40 Purtrex Replacement Filter Cartridge

    PX10-40 Purtrex Replacement Water Filter

    $12.99
    MSRP: $14.94
    Save 13%
  • SF100 OmniFilter Shower-Soft Inline Shower Filter

    SF100 OmniFilter Shower-Soft Inline Shower Filter

    $29.99
    MSRP: $35.64
    Save 16%
  • KDF55-20 Tier1 Replacement Filter Cartridge

    KDF55-20 Tier1 Replacement Filter Cartridge

    $55.05
    MSRP: $93.34
    Save 41%
  • 41400009 Hydrotech Reverse Osmosis Filter

    41400009 Hydrotech Reverse Osmosis Filter

    $15.99
    MSRP: $23.99
    Save 33%
  • GX10-30 Hytrex Replacement Filter Cartridge

    GX10-30 Hytrex Water Filter Cartridge

    $12.79
    MSRP: $19.99
    Save 36%
  • IF14C Ice-O-Matic Inline Water Filtration Cartridge

    Ice-O-Matic IF14C Inline Water Filter Cartridge

    $97.39
    MSRP: $118.99
    Save 18%
  • IF18C Ice-O-Matic Inline Water Filtration Cartridge - 1

    IF18C Ice-O-Matic Inline Water Filter Cartridge

    $106.99
    MSRP: $152.99
    Save 30%
  • 1266690 Merlin Merlin Reverse Osmosis Sediment Filter

    1266690 Merlin Merlin Reverse Osmosis Sediment Filter

    $18.19
    MSRP: $27.99
    Save 35%
  • Q5621 Omnipure Replacement Filter Cartridge

    Q5621 Omnipure Replacement Filter Cartridge

    $21.39
    MSRP: $27.99
    Save 24%
  • Q5621-P Omnipure Replacement Filter Cartridge

    Q5621-P Omnipure Replacement Filter Cartridge

    $23.49
    MSRP: $35.99
    Save 35%
  • SCL10-B Omnipure Scale Inline Filter

    SCL10-B Omnipure Scale Inline Filter

    $12.99
    MSRP: $17.24
    Save 25%

Items 1 to 48 of 56 total

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