Discount Water Filters and Air Filters at Discount Filter Store.com

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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.

41 Item(s)

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  • ROR2000-S-05 OmniFilter Reverse Osmosis Pre Filter Replacement
  • RFC-93 Pentek Radial Flow Carbon Water Filter Cartridge

    RFC-93 Pentek Radial Flow Carbon Water Filter Cartridge

    $23.99
    MSRP: $27.99
    Save 14%
  • CW-MF Pentek Comparable Whole House Sediment Water Filter by Tier1 (4-Pack)
  • CW-MF Pentek Comparable Whole House Sediment Waters Filter by Tier1 (6-Pack)
  • D-250A Culligan Comparable Under Sink Water Filter Set by Tier1
  • P-250 Pentek Comparable Under Sink Water Filter Set by Tier1
  • P-250A Pentek Comparable Under Sink Filter Set by Tier1

    P-250A Pentek Comparable Under Sink Filter Set by Tier1

    $24.99 MSRP: $41.99
    Save 40%
  • WHKF-DB1 Whirlpool Comparable Under Sink Water Filter by Tier1
  • WHKF-DB2 Whirlpool Comparable Under Sink Water Filter by Tier1
  • Pentek SCBC-10 Silvered Carbon Block

    Pentek SCBC-10 Silvered Carbon Block

    $22.99
    MSRP: $24.71
    Save 7%
  • W5CIP American Plumber Undersink Filter Replacement Cartridge (2-Pack)
  • 3M Aqua-Pure AP1001 Whole House Water Filter Cartridge
  • 3M Aqua-Pure AP117 Whole House Water Filter Cartridge

    3M Aqua-Pure AP117 Whole House Filter Replacement Cartridge

    $28.99
    MSRP: $54.13
    Save 46%
  • AP117RO 3M Aqua-Pure Reverse Osmosis Filter

    3M Aqua-Pure AP117RO Reverse Osmosis Filter

    $25.69
    MSRP: $38.99
    Save 34%
  • AF-10-3690 Aries Replacement Fluoride Filter Cartridge

    AF-10-3690 Aries Replacement Fluoride Filter Cartridge

    $28.99
    MSRP: $32.19
    Save 10%
  • D-15 Culligan Level 1 Undersink Filter Replacement Cartridge (2-Pack)
  • D-30 Culligan Level 2 Undersink Filter Replacement Cartridge
  • HF-150 Culligan Whole House Filter System

    HF-150 Culligan Whole House Filter System

    $21.99
    MSRP: $26.44
    Save 17%
  • RV-600A Culligan Level 1 Inline RV Pre-Tank Exterior Filter
  • DEV9108-17 Everpure CostGuard CG5-10S Undersink Filter Replacement Cartridge
  • EV9100-08 Everpure IN-10 Inline Filter with 3/8 inch NPT threads

    EV9100-08 Everpure IN-10 Inline Water Filter

    $22.49
    MSRP: $30.99
    Save 27%
  • FXUTC GE SmartWater Undersink Filter Replacement Cartridge

    FXUTC GE SmartWater Undersink Filter Replacement Cartridge

    $24.59
    MSRP: $35.99
    Save 32%
  • PCC218 Pentek Replacement Filter Cartridge

    PCC218 Pentek Replacement Filter Cartridge

    $23.99
    MSRP: $26.44
    Save 9%
  • PCF1-10MB Pentek Whole House Filter Replacement Cartridge

    PCF1-10MB Pentek Whole House Filter Replacement Cartridge

    $24.99
    MSRP: $30.69
    Save 19%
  • TSGAC-10 Pentek Undersink Filter Replacement Cartridge

    TSGAC-10 Pentek Undersink Filter Replacement Cartridge

    $20.99
    MSRP: $24.60
    Save 15%
  • WHKF-DB1 Whirlpool Undersink Replacement Filter Cartridge
  • MATRIKX-1-10 KX Technologies MatrikX Undersink Filter Replacement Cartridge
  • MATRIKX-5-10 KX Technologies MatrikX Undersink Filter Replacement Cartridge
  • MATRIKX-Pb1-10 KX Technologies MatrikX Undersink Filter Replacement Cartridge
  • E5515-P Omnipure Replacement Filter Cartridge

    E5515-P Omnipure Replacement Filter Cartridge

    $27.79
    MSRP: $34.99
    Save 21%
  • E5520 Omnipure Replacement Filter Cartridge

    E5520 Omnipure Replacement Filter Cartridge

    $21.99
    MSRP: $26.44
    Save 17%
  • K5515-BB Omnipure Lead Cyst Inline Filter

    K5515-BB Omnipure Lead Cyst Inline Filter

    $25.69
    MSRP: $35.99
    Save 29%
  • K5562-BB-NRW37 Omnipure Deionization Inline Filter

    K5562-BB-NRW37 Omnipure Deionization Inline Filter

    $22.99
    MSRP: $25.29
    Save 9%
  • K5567JJ Omnipure Inline Filter Replacement Cartridge

    K5567JJ Omnipure Replacement Inline Water Filter Cartridge

    $20.05
    MSRP: $26.44
    Save 24%
  • CBR2-10R Pentek Undersink Filter Replacement Cartridge

    CBR2-10R Pentek Undersink Filter Replacement Cartridge

    $20.29
    MSRP: $27.99
    Save 28%
  • CCBC-10 Pentek Undersink Filter Replacement Cartridge

    CCBC-10 Pentek Undersink Filter Replacement Cartridge

    $20.29
    MSRP: $27.99
    Save 28%
  • CRE-1 Pentek Undersink Filter Replacement Cartridge

    CRE-1 Pentek Undersink Filter Replacement Cartridge

    $25.69
    MSRP: $34.99
    Save 27%
  • K5515-JJ Omnipure Inline Water Filter

    K5515-JJ Omnipure Inline Water Filter

    $23.99
    MSRP: $29.89
    Save 20%
  • CQE-RC-04000 Crystal Quest Carbon Block Water Filter Cartridge
  • K5520-BB Omnipure Carbon Block Inline Filter

    K5520-BB Omnipure Carbon Block Inline Filter

    $24.59
    MSRP: $30.99
    Save 21%
  • KDF55-10 Tier1 Water Filter

    KDF55-10 Tier1 Water Filter

    $23.99
    MSRP: $27.34
    Save 12%

41 Item(s)

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