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  • Your filters are guaranteed to be the right fit!
  • Our products are price match guaranteed!
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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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  • CFS117-S Cuno Whole House Filter Replacement Cartridge

    CFS117-S Cuno Whole House Filter Replacement Cartridge

    $32.05
    MSRP: $40.24
    Save 20%
  • 4WH-HDGAC-F01 Filtrete Replacement Filter Cartridge

    4WH-HDGAC-F01 3M Filtrete Water Filter Cartridge

    $32.99
    MSRP: $41.39
    Save 20%
  • CQE-RC-04034 Crystal Quest Reusable Pleated Water Filter Cartridge
  • 3M Aqua-Pure AP810 Whole House Water Filter Cartridge
  • 3M Aqua-Pure APS117 Whole House Water Filter Replacement Cartridge
  • E5722-P Omnipure Carbon Block Water Filter

    E5722-P Omnipure Carbon Block Water Filter

    $33.99
    MSRP: $49.99
    Save 32%
  • HAC-10-LR-W Harmsco Chlorine and Lead Removal Whole House Filter
  • RVF-10 Culligan RV Pre-Tank Exterior Filter

    RVF-10 Culligan RV Pre-Tank Exterior Filter

    $34.99
    MSRP: $38.51
    Save 9%
  • WP5BB20P Pentek Replacement Filter Cartridge

    WP5BB20P Pentek Replacement Filter Cartridge

    $34.99
    MSRP: $42.54
    Save 18%
  • US-EZ-1 Culligan Level 1 Easy-Change Undersink Filter System
  • 3M Aqua-Pure AP217 Under Sink Water Filter
  • AP327 3M Aqua-Pure Water Filter Replacement Cartridge
  • EP-30 Pentek Replacement Filter Cartridge

    EP-30 Pentek Replacement Water Filter Cartridge

    $37.99
    MSRP: $46.10
    Save 18%
  • CQE-RC-04035 Crystal Quest Carbon Block Water Filter Cartridge
  • CS-51 Cuno Inline Filter

    CS-51 Cuno Inline Filter

    $39.99
    MSRP: $42.34
    Save 6%
  • CQE-RC-04014 Crystal Quest Carbon Block Water Filter Cartridge
  • SPC-25-1005 Hydronix Pleated Sediment Water Filter (6-Pack)
  • WFPF38001C DuPont Universal Valve-In-Head Whole House Water Filtration System
  • EP5-20BB Tier1 Carbon Block Water Filter

    EP5-20BB Tier1 Carbon Block Water Filter

    $37.99 MSRP: $62.09
    Save 39%
  • P5-10BB Tier1 Sediment Water Filter (4-pack)

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