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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!

Learn more about our No Worries Guarantee

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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  • W20CLA American Plumber Whole House Sediment Filter Cartridge (2-Pack)
  • W20CLHD American Plumber Whole House Heavy Duty Filter Cartridge
  • W20CLHD20 American Plumber Whole House 20-inch Heavy Duty Filter Cartridge
  • WGCHD American Plumber Undersink Water Filter Replacement Cartridge
  • 801-20 Harmsco Replacement Filter Cartridge

    801-20 Harmsco Replacement Filter Cartridge

    $7.99 Retail Price:  $11.49
  • SDC-25-1020 Hydronix Whole House Replacement Sediment Filter Cartridge
  • SDC-25-2020 Hydronix Whole House Replacement Sediment Filter Cartridge
  • GAC-10 Pentek Undersink Filter Replacement Cartridge

    GAC-10 Pentek Undersink Filter Replacement Cartridge

    $12.99 Retail Price:  $17.99
  • GAC-5 Pentek Replacement Filter Cartridge
  • PS20-10C Pentek Whole House Replacement Sediment Filter Cartridge
  • QC10-GACR Pentek Undersink Quick-Change Replacement Filter Cartridge
  • S1-20BB Pentek Whole House Filter Replacement Cartridge

    S1-20BB Pentek Whole House Filter Replacement Cartridge

    $21.99 Retail Price:  $25.34
  • TSGAC-10 Pentek Undersink Filter Replacement Cartridge

    TSGAC-10 Pentek Undersink Filter Replacement Cartridge

    $20.99 Retail Price:  $24.60
  • PX20-20 Purtrex Replacement Filter Cartridge

    PX20-20 Purtrex Replacement Water Filter

    $4.99 Retail Price:  $8.04
  • PX20-9-78 Purtrex Replacement Filter Cartridge

    PX20-9-78 Purtrex Water Filter Cartridge

    $3.99 Retail Price:  $5.74
  • CC-10 Pentek Undersink Filter Replacement Cartridge

    CC-10 Pentek Undersink Filter Replacement Cartridge

    $14.99 Retail Price:  $15.34
  • SPC-25-2020 Hydronix Pleated Sediment Water Filter

    SPC-25-2020 Hydronix Pleated Sediment Water Filter

    $10.99 Retail Price:  $16.09
  • S1-BB Pentek Comparable Whole House Sediment Water Filter by Tier1
  • S1A-D Culligan Comparable Whole House Sediment Water Filter 2-Pack by Tier1
  • 255541-43 Pentek Inline Water Filter Replacement
  • WB-HB-20-20W Harmsco Pleated Commercial Water Filter Cartridge
  • SPC-25-1020 Hydronix Pleated Sediment Water Filter (6-Pack)
  • ECP20-10 Pentek Replacement Filter Cartridge (30-Pack)
  • ECP20-20 Pentek Replacement Filter Cartridge (20-Pack)
  • ECP20-20 Pentek Replacement Filter Cartridge (6-Pack)
  • ECP20-20BB Pentek Replacement Filter Cartridge (6-Pack)
  • ECP20-BB Pentek Replacement Filter Cartridge (12-Pack)
  • ECP20-BB Pentek Replacement Filter Cartridge (20-Pack)
  • ECP20-BB Pentek Replacement Filter Cartridge (6-Pack)
  • SPC-25-1020 Hydronix Sediment Water Filter

    SPC-25-1020 Hydronix Pleated Sediment Water Filter

    As Low As $5.00 Per Filter

  • Pentek ECP20-20 Replacement Water Filter Cartridge

    ECP20-20 Pentek Replacement Filter Cartridge

    As Low As $11.25 Per Filter

  • Pentek ECP20-20BB Replacement Water Filter Cartridge

    ECP20-20BB Pentek Replacement Filter Cartridge

    As Low As $21.33 Per Filter

  • Pentek ECP20-BB Replacement Water Filter Cartridge

    ECP20-BB Pentek Replacement Filter Cartridge

    As Low As $12.00 Per Filter

  • GAC20-BB Pentek Whole House Water Filter
  • Pentek S1 Pleated Whole House Sediment Filter
  • SDC-45-1020 Hydronix Comparable Sediment Water Filter by Tier1
  • P20-20 Tier1 Sediment Water Filter

    P20-20 Tier1 Sediment Water Filter

    As Low As $5.24 Per Filter

  • Tier1 P20-20BB Whole House Replacement Sediment Filter Cartridge
  • Pentek S1-BB Replacement Water Filter Cartridge

    S1-BB Pentek Replacement Filter Cartridge

    As Low As $5.40 Per Filter

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

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