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 313 total

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  • TFM-18-A Tier1 Reverse Osmosis Membrane

    TFM-18-A Tier1 Reverse Osmosis Membrane

    $35.99
    MSRP: $45.99
    Save 22%
  • TFM-36-A Tier1 Reverse Osmosis Membrane

    TFM-36-A Tier1 Reverse Osmosis Membrane

    $36.99
    MSRP: $49.99
    Save 26%
  • TFM-50-A Tier1 Reverse Osmosis Membrane
  • PENTEK-CBC-10

    PENTEK-CBC-10

    $16.92
  • SB-2R Water Bottle Replacement Filters (2-Pack)

    SB-2R Water Bottle Replacement Filters (2-Pack)

    $8.99
    MSRP: $13.99
    Save 36%
  • 155014-43 Pentek Comparable Whole House Sediment Water Filter by Tier1
  • AP110 3M Aqua-Pure Comparable Whole House Sediment Water Filter by Tier1
  • TIER1-FX30-934-2PK

    TIER1-FX30-934-2PK

    $8.99
  • TIER1-AP85-934

    TIER1-AP85-934

    $18.99
  • CW-F-D Culligan Comparable Whole House Water Filter 2-Pack by Tier1
  • TIER1-CW50-934

    TIER1-CW50-934

    $4.99
  • R50-BB Pentek Comparable Whole House Sediment Water Filter by Tier1
  • RFC-BBS-D Culligan Comparable Whole House Carbon Water Filter by Tier1
  • S1A-D Culligan Comparable Whole House Sediment Water Filter 2-Pack by Tier1
  • D-25 Culligan Under Sink Water Filter
  • Replacement Brand FXHSC Pleated Cellulose Sediment Water Filter (side)
  • KX Matrikx CTO2-12 Reverse Osmosis Carbon Block Replacement Filter
  • DGD-7525-20 Pentek Whole House Water Filter
  • Pentek ECP1-10 Replacement Water Filter Cartridge

    ECP1-10 Pentek Replacement Filter Cartridge

    $12.99 MSRP: $17.99
    Save 28%
  • Pentek ECP1-20BB Replacement Water Filter Cartridge
  • Pentek ECP1-BB Replacement Water Filter Cartridge

    Pentek ECP1-BB Water Filter Cartridge Replacement

    $16.79 MSRP: $17.12
    Save 2%
  • Pentek ECP20-20 Replacement Water Filter Cartridge

    ECP20-20 Pentek Replacement Filter Cartridge

    $14.99 MSRP: $19.99
    Save 25%
  • Pentek ECP20-20BB Replacement Water Filter Cartridge
  • Pentek ECP20-BB Replacement Water Filter Cartridge

    ECP20-BB Pentek Replacement Filter Cartridge

    $16.79 MSRP: $17.70
    Save 5%
  • Pentek ECP50-20BB Replacement Water Filter Cartridge

    ECP50-20BB Pentek Replacement Filter Cartridge

    $20.49 MSRP: $23.56
    Save 13%
  • Pentek EP-10 Replacement Water Filter Cartridge
  • Pentek EP-20 Replacement Water Filter Cartridge

    Pentek EP-20 Water Filter Cartridge Replacements

    $19.59 MSRP: $20.00
    Save 2%
  • EP-20BB Pentek Replacement Water Filter
  • EP-BB Pentek Replacement Filter Cartridge
  • Pentek EPM-BB Replacement Water Filter Cartridge
  • EP-10 Pentek Comparable Carbon Block Water Filter by Tier1

    EP-10 Pentek Comparable Carbon Block Water Filter by Tier1

    $7.99 MSRP: $11.49
    Save 30%
  • P5-20 Pentek Comparable Whole House Sediment Water Filter by Tier1
  • DGD-5005-20 Pentek Whole House Filter Replacement Cartridge by Tier1
  • Pentek R30-20 Replacement Water Filter Cartridge

    R30-20 Pentek Replacement Filter Cartridge

    $17.99 MSRP: $24.99
    Save 28%
  • Pentek WP5BB97P Replacement Water Filter Cartridge
  • Pentek WS-10 Water Softening Water Filter

    Pentek WS-10 Water Softening Filter

    $19.99 MSRP: $24.83
    Save 19%
  • PX05-9-78 Purtrex Replacement Water Filter

    PX05-9-78 Purtrex Replacement Water Filter

    $5.99 MSRP: $9.99
    Save 40%
  • EP5-10BB Tier1 Carbon Block Water Filter

    EP5-10BB Tier1 Carbon Block Water Filter

    $17.99 MSRP: $22.99
    Save 22%
  • TIER1_ECP5_BB_12_PACK

    TIER1_ECP5_BB_12_PACK

    $134.99
  • TIER1_ECP5_BB_4_PACK

    TIER1_ECP5_BB_4_PACK

    $55.99
  • TIER1_ECP5_BB_6_PACK

    TIER1_ECP5_BB_6_PACK

    $80.99
  • TIER1_ECP5_BB_25_PACK

    TIER1_ECP5_BB_25_PACK

    $261.99
  • Pentek C1-20 Carbon Water Filter Replacement Cartridge

    Pentek C1-20 Water Filter Cartridge Replacements

    $13.69 MSRP: $16.09
    Save 15%
  • CBC-10 Pentek Replacement Water Filter
  • Pentek S1-BB Replacement Water Filter Cartridge

    Pentek S1-BB Water Filter Cartridge Replacement

    $14.99 MSRP: $17.99
    Save 17%
  • ECP5-BB Pentek Comparable Whole House Sediment Water Filter by Tier1
  • CP5-BBS-D Culligan Comparable Whole House Water Filter by Tier1
  • EP-20BB Pentek Comparable Carbon Block Water Filter by Tier1

    EP-20BB Pentek Comparable Carbon Block Water Filter by Tier1

    $47.99 MSRP: $69.77
    Save 31%

Items 1 to 48 of 313 total

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