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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.

Items 1 to 48 of 62 total

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  • CB-25-1005 Hydronix Replacement Filter Cartridge
  • CB-25-2010 Hydronix Replacement Filter Cartridge

    CB-25-2010 Hydronix Replacement Filter Cartridge

    $14.99
    MSRP: $17.34
    Save 14%
  • CB-45-2010 Hydronix Replacement Filter Cartridge

    CB-45-2010 Hydronix Replacement Filter Cartridge

    $36.99
    MSRP: $49.44
    Save 25%
  • PENTEK-CFBC-20

    PENTEK-CFBC-20

    $23.49
    MSRP: $29.31
    Save 20%
  • PENTEK-EPM-10

    PENTEK-EPM-10

    $9.99
    MSRP: $10.57
    Save 5%
  • FLOPLUS-10 Pentek Replacement Filter Cartridge

    FLOPLUS-10 Pentek Replacement Filter Cartridge

    $14.99
    MSRP: $21.26
    Save 29%
  • PENTEK-FLOPLUS-10BB

    PENTEK-FLOPLUS-10BB

    $44.99
    MSRP: $48.52
    Save 7%
  • FLOPLUS-20 Pentek Replacement Filter Cartridge

    FLOPLUS-20 Pentek Replacement Filter Cartridge

    $28.99
    MSRP: $31.84
    Save 9%
  • FLOPLUS-20BB Pentek Replacement Filter Cartridge

    FLOPLUS-20BB Pentek Replacement Filter Cartridge

    $61.99
    MSRP: $80.49
    Save 23%
  • PENTEK-GS-215-CB5-B

    PENTEK-GS-215-CB5-B

    $24.69
    MSRP: $30.69
    Save 20%
  • PENTEK-MG-10MCB

    PENTEK-MG-10MCB

    $72.99
    MSRP: $84.05
    Save 13%
  • PENTEK-P-250

    PENTEK-P-250

    $23.99
    MSRP: $28.99
    Save 17%
  • PENTEK-P-250A

    PENTEK-P-250A

    $23.99
    MSRP: $31.27
    Save 23%
  • QC10-CB1 Pentek Undersink Quick-Change Filter System

    QC10-CB1 Pentek Quick-Change Water Filtration System

    $32.95
    MSRP: $40.99
    Save 20%
  • PENTEK-QC10-CBR-JG14

    PENTEK-QC10-CBR-JG14

    $33.99
    MSRP: $35.41
    Save 4%
  • PENTEK-QC10-CBR-THREADED

    PENTEK-QC10-CBR-THREADED

    $30.89
    MSRP: $37.82
    Save 18%
  • PENTEK-QC10-CBRR

    PENTEK-QC10-CBRR

    $22.99
    MSRP: $36.79
    Save 38%
  • PENTEK-QC10-EP

    PENTEK-QC10-EP

    $27.05
    MSRP: $34.26
    Save 21%
  • PENTEK-QC10-EPR

    PENTEK-QC10-EPR

    $23.99
    MSRP: $27.70
    Save 13%
  • 01-250-125-050 KX Technologies Replacement Filter Cartridge
  • PENTEK-CBC-20

    PENTEK-CBC-20

    $25.99
    MSRP: $28.39
    Save 8%
  • PENTEK-CBC20-BB

    PENTEK-CBC20-BB

    $70.99
    MSRP: $109.99
    Save 35%
  • PENTEK-CBC-5

    PENTEK-CBC-5

    $9.99
    MSRP: $16.55
    Save 40%
  • PENTEK-CBC-BB

    PENTEK-CBC-BB

    $42.99
    MSRP: $44.26
    Save 3%
  • PENTEK-CBU-10

    PENTEK-CBU-10

    $19.99
    MSRP: $21.95
    Save 9%
  • PENTEK-CCBC-10

    PENTEK-CCBC-10

    $18.99
    MSRP: $19.31
    Save 2%
  • PENTEK-CEP-10E

    PENTEK-CEP-10E

    $12.99
  • PENTEK-CFB-PLUS10

    PENTEK-CFB-PLUS10

    $9.99
    MSRP: $14.13
    Save 29%
  • PENTEK-CFB-PLUS20

    PENTEK-CFB-PLUS20

    $16.99
    MSRP: $21.26
    Save 20%
  • PENTEK-CFB-PLUS20BB

    PENTEK-CFB-PLUS20BB

    $42.99
    MSRP: $52.89
    Save 19%
  • PENTEK-EP-30

    PENTEK-EP-30

    $37.99
    MSRP: $46.10
    Save 18%
  • CB-25-2001 Hydronix Carbon Water Filter Replacement

    CB-25-2001 Hydronix Carbon Water Filter Replacement

    $16.05
    MSRP: $20.34
    Save 21%
  • CBC-10BB-WF Tier1 Water Filter Cartridge
  • CBC-20 Tier1 Water Filter Cartridge

    CBC-20 Tier1 Water Filter Cartridge

    $20.05
    MSRP: $28.74
    Save 30%
  • CBC-20BB-WF Tier1 Water Filter Cartridge

    CBC-20BB-WF Tier1 Water Filter Cartridge

    $67.99
    MSRP: $83.94
    Save 19%
  • KDF55-10 Tier1 Water Filter

    KDF55-10 Tier1 Water Filter

    $23.99
    MSRP: $27.34
    Save 12%
  • KDF55-10BB Tier1 Water Filter
  • KDF85-10BB Tier1 Water Filter

    KDF85-10BB Tier1 Water Filter

    $81.99
    MSRP: $86.24
    Save 5%
  • KDF85-20 Tier1 Water Filter

    KDF85-20 Tier1 Water Filter

    $102.99
    MSRP: $121.89
    Save 16%
  • PENTEK-EP-5

    PENTEK-EP-5

    $6.99
  • Pentek CFB-PB10 Lead & Cyst Carbon Filter

    Pentek CFB-PB10 Lead & Cyst Carbon Filter

    $13.99
    MSRP: $17.12
    Save 18%
  • Pentek SCBC-10 Silvered Carbon Block

    Pentek SCBC-10 Silvered Carbon Block

    $22.99
    MSRP: $24.71
    Save 7%
  • Pentek QC10-CB1R Carbon Block Quick Change Filter
  • EPM-20 Pentek Comparable Whole House Water Filter by Tier1
  • EPM-20BB Pentek Comparable Whole House Water Filter by Tier1
  • Pentek 255579-43 Inline Sediment Water Filter Replacement
  • CB1-10 Pentek Carbon Block Water Filter Replacement

    CB1-10 Pentek Carbon Block Water Filter Replacement

    $14.99
    MSRP: $19.99
    Save 25%
  • Pentek EP-10 Replacement Water Filter Cartridge

Items 1 to 48 of 62 total

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