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!

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  • Your filters are guaranteed to be the right fit!
  • Our products are price match guaranteed!
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  • You’re guaranteed to find expert help!

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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 50 total

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  • Pentek ECP1-10 Replacement Water Filter Cartridge

    ECP1-10 Pentek Replacement Filter Cartridge

    $11.99 MSRP: $17.99
    Save 33%
  • Pentek P1-20 Whole House Water Filter Replacement Cartridge
  • SPC-25-2001 Hydronix Comparable Pleated Sediment Water Filter by Tier1
  • SPC-25-2001 Hydronix Comparable Pleated Sediment Water Filter by Tier1
  • New Box 6-28-17
  • DGD-2501 Pentek Whole House Water Filter
  • CB1-10 Pentek Carbon Block Water Filter Replacement

    CB1-10 Pentek Carbon Block Water Filter Replacement

    $15.39
    MSRP: $23.99
    Save 36%
  • SDC-25-3001 Hydronix Comparable Whole House Sediment Water Filter by Tier1
  • Pentek ECP1-BB Replacement Water Filter Cartridge

    Pentek ECP1-BB Water Filter Cartridge Replacement

    $15.99 MSRP: $17.12
    Save 7%
  • SPC-45-1001 Hydronix Comparable Whole House Sediment Water Filter by Tier1
  • SPC-45-1001 Hydronix Comparable Whole House Sediment Water Filter by Tier1
  • SDC-25-4001 Hydronix Comparable Whole House Sediment Water Filter by Tier1
  • L5515 Omnipure GAC Replacement Filter Cartridge

    L5515 Omnipure GAC Replacement Filter Cartridge

    $16.99
    MSRP: $24.99
    Save 32%
  • Hydronix SDC-25-3001 Polypropylene Sediment Filter
  • TIER1-DGD1-20BB

    TIER1-DGD1-20BB

    $18.99
    MSRP: $24.99
    Save 24%
  • Everpure EV9618-02 Comparable Food Service Replacement Filter by Tier1
  • EV9618-02 Everpure Comparable Food Service Replacement Filter by Tier1
  • EV9618-01 Everpure Comparable Food Service Replacement Filter by Tier1
  • EV9618-06 Everpure Comparable Food Service Replacement Filter by Tier1
  • E5420-P-1M-SB Omnipure Comparable Food Service Replacement Filter by Tier1
  • AP317 Aquapure Comparable Food Service Replacement Filter by Tier1
  • SDC-25-4001 Hydronix Sediment Water Filter Cartridge
  • Pentek CHLORPLUS-10 Whole House Water Filter Replacement Cartridge
  • Pentek KO1HE3 Polypropylene High Efficiency Filter Bag

    Pentek KO1HE3 Polypropylene High Efficiency Filter Bag

    $16.99
    MSRP: $19.34
    Save 12%
  • PX01-30 Purtrex Sediment Filter Cartridge

    PX01-30 Purtrex Sediment Filter Cartridge

    $10.99
    MSRP: $15.99
    Save 31%
  • P1-D Culligan Level 4 Whole House Filter Replacement Cartridge (2-Pack)
  • GX01-30 Hytrex Water Filter Cartridge

    GX01-30 Hytrex Water Filter Cartridge

    $11.99
    MSRP: $16.09
    Save 25%
  • BPHE-420-1 Pentek Polypropylene High Efficiency Bag Filter

    BPHE-420-1 Pentek Polypropylene High Efficiency Bag Filter

    $11.99
    MSRP: $16.55
    Save 28%
  • C8 Pentek Whole House Replacement Filter Cartridge
  • Purtrex PX01-40 Polypropylene Sediment Filter

    Purtrex PX01-40 Polypropylene Sediment Filter

    $12.99
    MSRP: $17.24
    Save 25%
  • E5320 Omnipure Replacement Filter Cartridge

    E5320 Omnipure Replacement Filter Cartridge

    $13.69
    MSRP: $21.99
    Save 38%
  • OMB934-1L Omnipure Alpha Series Undersink Filter Replacement Cartridge
  • W9142010 Doulton Replacement DCB10 Carbon Block

    W9142010 Doulton Replacement DCB10 Carbon Block

    $17.00
    MSRP: $18.39
    Save 8%
  • E5486 Omnipure Water Filter

    E5486 Omnipure Water Filter

    $17.99
    MSRP: $20.34
    Save 12%
  • Q5515 Omnipure Water Filter

    Q5515 Omnipure Water Filter

    $18.99
    MSRP: $40.99
    Save 54%
  • CCBC-10 Pentek Undersink Filter Replacement Cartridge

    CCBC-10 Pentek Undersink Filter Replacement Cartridge

    $19.59
    MSRP: $27.99
    Save 30%
  • E5520-K Omnipure Water Filter

    E5520-K Omnipure Water Filter

    $19.79
    MSRP: $25.99
    Save 24%
  • 8011553 Katadyn Exstream Ultralight Series Personal Water Purifier Cyst Filter
  • K5520P-JJ Omnipure Inline Phosphate Filter

    K5520P-JJ Omnipure Inline Phosphate Filter

    $19.99
    MSRP: $27.59
    Save 28%
  • Q5620 Omnipure Replacement Filter Cartridge

    Q5620 Omnipure Replacement Filter Cartridge

    $19.99
    MSRP: $25.29
    Save 21%
  • SWC-25-2001 Hydronix String Wound Sediment Water Filter (1 micron)
  • AP-GRMB-01PP-20UB Whole House Replacement Water Filter by 3M Aqua-Pure
  • SDC-45-1001 Hydronix Whole House Replacement Sediment Filter Cartridge
  • ECP1-20 Pentek Replacement Filter Cartridge

    ECP1-20 Pentek Replacement Filter Cartridge

    $15.99
    MSRP: $17.70
    Save 10%
  • WP1BB97P Pentek Replacement Filter Cartridge
  • SWC-45-1001 Hydronix String-Wound Sediment Water Filter

    SWC-45-1001 Hydronix String-Wound Sediment Water Filter

    $17.99
    MSRP: $18.39
    Save 2%
  • WQCCC11 Watts Kwik-Change Pre-Carbon Water Filter Cartridge

    WQCCC11 Watts Kwik-Change Pre-Carbon Water Filter Cartridge

    $17.99
    MSRP: $25.29
    Save 29%
  • RS16 OmniFilter Whole House Replacement Filter Cartridge

Items 1 to 48 of 50 total

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