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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.

33 Item(s)

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  • P5-20 Tier1 Sediment Water Filter

    P5-20 Tier1 Whole House Sediment Water Filter

    $4.99 MSRP: $9.19
    Save 46%
  • PX05-9-78 Purtrex Replacement Water Filter

    PX05-9-78 Purtrex Replacement Water Filter

    $5.79 MSRP: $8.04
    Save 28%
  • S1A-D Culligan Comparable Whole House Sediment Water Filter 2-Pack by Tier1
  • KX Matrikx CTO2-12 Reverse Osmosis Carbon Block Replacement Filter
  • SB-2R Water Bottle Replacement Filters (2-Pack)

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

    $7.05
    MSRP: $11.49
    Save 39%
  • AP110 Aquapure Comparable Whole House Sediment Water Filter by Tier1
  • EP5-10 Tier1 Carbon Block Water Filter

    EP5-10 Tier1 Carbon Block Water Filter

    $8.49 MSRP: $11.49
    Save 26%
  • FXUSC GE Comparable Whole House Sediment Water Filter 2-Pack by Tier1
  • Pentek ECP1-10 Replacement Water Filter Cartridge

    ECP1-10 Pentek Replacement Filter Cartridge

    $8.99 MSRP: $10.57
    Save 15%
  • CW-F-D Culligan Comparable Whole House Water Filter 2-Pack by Tier1
  • OR-38 Culligan Undersink and RV Filter O-Ring

    OR-38 Culligan Undersink and RV Filter O-Ring

    $4.99
    MSRP: $9.19
    Save 46%
  • EP-5 Pentek Replacement Filter Cartridge
  • P1-5 Tier1 Sediment Filter Cartridge

    P1-5 Tier1 Sediment Filter Cartridge

    $2.05
    MSRP: $8.34
    Save 75%
  • P10-5 Tier1 Polypropylene Sediment Filter

    P10-5 Tier1 Polypropylene Sediment Filter

    $2.55
    MSRP: $5.74
    Save 56%
  • PS1-10C Pentek Whole House Replacement Sediment Filter Cartridge
  • HDG-SED-ACS Hydronix Replacement Filter Cartridge

    HDG-SED-ACS Hydronix Replacement Filter Cartridge

    $5.99
    MSRP: $8.04
    Save 25%
  • SDC-25-1005 Hydronix Whole House Replacement Sediment Filter Cartridge
  • PS20-10C Pentek Whole House Replacement Sediment Filter Cartridge
  • PR-1 Culligan Pitcher Replacement Cartridge
  • S1A Culligan Level 2 Whole House Filter Replacement Cartridge (2-Pack)
  • PD-1-934 Pentek Whole House Replacement Sediment Filter Cartridge
  • WP-5 Pentek Replacement Filter Cartridge

    WP-5 Pentek Replacement Filter Cartridge

    $6.99
    MSRP: $8.84
    Save 21%
  • HDG-CB-AC10 Hydronix Reverse Osmosis Filter

    HDG-CB-AC10 Hydronix Reverse Osmosis Filter

    $7.99
    MSRP: $9.19
    Save 13%
  • ECP50-10 Pentek Replacement Filter Cartridge

    ECP50-10 Pentek Replacement Filter Cartridge

    $7.99
    MSRP: $8.15
    Save 2%
  • PD-1-20 Pentek Whole House Replacement Sediment Filter Cartridge
  • PD-50-20 Pentek Whole House Replacement Sediment Filter Cartridge
  • 01-250-125-050 KX Technologies Replacement Filter Cartridge
  • CFB-Plus10 Pentek Replacement Filter Cartridge

    CFB-Plus10 Pentek Replacement Water Filter Cartridge

    $9.99
    MSRP: $14.13
    Save 29%
  • CW-F Pentek String Wound Sediment Water Filter (9-7/8 in x 2-1/4 in)
  • SCWH-5 WTR Culligan Water Filter Cartridge

    SCWH-5 WTR Culligan Water Filter Cartridge

    $9.99
    MSRP: $10.99
    Save 9%

33 Item(s)

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