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!

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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.

31 Item(s)

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  • W20CLA American Plumber Whole House Sediment Filter Cartridge (2-Pack)
  • W20CLHD American Plumber Whole House Heavy Duty Filter Cartridge
  • WCC American Plumber Undersink Filter Replacement Cartridge

    WCC American Plumber Undersink Filter Replacement Cartridge

    $19.99
    MSRP: $26.44
    Save 24%
  • WGC478 American Plumber Undersink Compact Filter Replacement Cartridge
  • 750R-D Culligan Level 1 Undersink RV and Marine Icemaker and Drinking Water Filter
  • GAC1SS OmniFilter Series C Undersink Filter Replacement Cartridge
  • GAC-10 Pentek Undersink Filter Replacement Cartridge

    GAC-10 Pentek Undersink Filter Replacement Cartridge

    $13.89
    MSRP: $19.99
    Save 31%
  • GAC-5 Pentek Replacement Filter Cartridge
  • QC10-GACR Pentek Undersink Quick-Change Replacement Filter Cartridge
  • FPMB-BB20-10 Watts Flo-Pro Whole House Replacement Filter Cartridge
  • CC-10 Pentek Undersink Filter Replacement Cartridge

    CC-10 Pentek Undersink Filter Replacement Cartridge

    $15.99
    MSRP: $21.99
    Save 27%
  • SPC-25-2020 Hydronix Pleated Sediment Water Filter

    SPC-25-2020 Hydronix Pleated Sediment Water Filter

    $10.99
    MSRP: $16.09
    Save 32%
  • S1-BB Pentek Comparable Whole House Sediment Water Filter by Tier1
  • HB-20-20W Harmsco Comparable Whole House Sediment Water Filter by Tier1
  • AP-GRMB-20PP-20UB Whole House Water Filter Replacement Cartridge
  • WFDWC20001 DuPont Universal Drinking Water Carbon Block Cartridge
  • WFHDC3001 DuPont Universal Heavy Duty Pleated Poly Whole House Cartridge
  • WFPFC3002 DuPont Universal Whole House Pleated Poly Filter Cartridge (2-Pack)
  • WB-20-W Harmsco Pleated Commercial Water Filter Cartridge

    WB-20-W Harmsco Pleated Commercial Water Filter Cartridge

    $10.99
    MSRP: $14.99
    Save 27%
  • 255541-43 Pentek Inline Water Filter Replacement
  • Hydronix SDC-45-1020 Sediment Filter Cartridge
  • Hydronix SPC-45-1020 Pleated Sediment Water Filter
  • Pentek ECP20-20 Replacement Water Filter Cartridge

    ECP20-20 Pentek Replacement Filter Cartridge

    $14.99 MSRP: $15.28
    Save 2%
  • Pentek ECP20-BB Replacement Water Filter Cartridge

    ECP20-BB Pentek Replacement Filter Cartridge

    $15.99 MSRP: $17.70
    Save 10%
  • SDC-45-1020 Hydronix Comparable Sediment Water Filter by Tier1
  • Tier1 P20-20BB Whole House Replacement Sediment Filter Cartridge
  • Pentek S1-BB Replacement Water Filter Cartridge

    Pentek S1-BB Water Filter Cartridge Replacement

    $14.99 MSRP: $17.99
    Save 17%
  • S1-20BB Pentek Comparable Whole House Water Filter by Tier1

    S1-20BB Pentek Comparable Whole House Water Filter by Tier1

    $16.99 MSRP: $26.99
    Save 37%
  • W20CLHD American Plumber Whole House Sediment Filter by Tier1
  • ECP20-BB Pentek Comparable Whole House Sediment Water Filter by Tier1
  • FPMB-BB20-10 Watts Comparable Whole House Sediment Water Filter by Tier 1

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