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

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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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Items 1 to 48 of 595 total

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  • CL6ROT33-A Omnipure GAC Inline Water Filter

    CL6ROT33-A Omnipure GAC Inline Water Filter

    $10.39
    MSRP: $14.99
    Save 31%
  • Culligan Pre-Reverse Osmosis Carbon Block Comparable Filter by Tier1
  • 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%
  • DuPont WFPTC100X Water Pitcher Replacement Cartridge High Protection
  • Hydronix SPC-25-1005 Pleated Water Filter
  • SWC-25-2005 Hydronix Comparable String Wound Sediment Water Filter (5 micron) by Tier1
  • SPC-25-1020 Hydronix Comparable Pleated Sediment Water Filter by Tier1
  • SB-3 Squeezable Filtered Sport Bottle (27 oz.)

    SB-3 WaterWay Squeezable Filtered Sport Bottle (27 oz.)

    $11.39
    MSRP: $28.99
    Save 61%
  • AWP117 Viqua Carbon Block Filter for S2Q-DWS UV System

    AWP117 Viqua Carbon Block Filter for S2Q-DWS UV System

    $11.39
    MSRP: $16.99
    Save 33%
  • P25-30 Comparable Polypropylene Sediment Filter by Tier1
  • Hydronix SDC-25-4005 Polypropylene Sediment Filter

    Hydronix SDC-25-4005 Polypropylene Sediment Filter

    $11.99
    MSRP: $13.56
    Save 12%
  • EPM-20 Pentek Comparable Whole House Water Filter by Tier1

    EPM-20 Pentek Comparable Whole House Water Filter by Tier1

    $11.99
    MSRP: $20.99
    Save 43%
  • FXWTC GE Comparable Whole House Water Filter 2-Pack by Tier1
  • AP-GRMB-05PP-20UB Whole House Replacement Filter by 3M Aqua-Pure
  • AP-GRMB-10PP-20UB Whole House Replacement Cartridge by 3M Aqua-Pure
  • AP-GRMB-20PP-20UB Whole House Water Filter Replacement Cartridge
  • AP-GRMB-50PP-20UB Whole House Water Filter Replacement Cartridge
  • K2528-KK Omnipure GAC Inline Water Filter

    K2528-KK Omnipure GAC Inline Water Filter

    $11.99
    MSRP: $17.99
    Save 33%
  • Pentek ECP1-10 Replacement Water Filter Cartridge

    ECP1-10 Pentek Replacement Filter Cartridge

    $11.99 MSRP: $17.99
    Save 33%
  • Pentek EP-10 Replacement Water Filter Cartridge

    Pentek EP-10 Filter Cartridge Replacement

    $11.99 MSRP: $15.34
    Save 22%
  • Pentek P1-20 Whole House Water Filter Replacement Cartridge
  • DGD-5005 Pentek Whole House Filter Replacement Cartridge by Tier1
  • TO1SS OmniFilter Whole House Water Filter
  • ECP5-BB Pentek Comparable Whole House Sediment Water Filter by Tier1
  • ECP5-BB Pentek Comparable Whole House Water Filter by Tier1

    ECP5-BB Pentek Comparable Whole House Water Filter by Tier1

    $11.99 MSRP: $19.99
    Save 40%
  • W20CLHD American Plumber Whole House Sediment Filter by Tier1
  • ECP20-BB Pentek Comparable Whole House Sediment Water Filter by Tier1
  • D-10 Twin Culligan Comparable Whole House Carbon Water Filter by Tier1
  • D-15 Culligan Whole Comparable House Carbon Water Filter by Tier1
  • WH-STDCW-F02 Filtrete Comparable Whole House Carbon Filter by Tier1
  • TO1DS OMNIFILTER Comparable Whole House Carbon Water Filter by Tier1 (2-Pack)
  • C1 Pentek Comparable Whole House Carbon Water Filter by Tier1
  • WHKF-DB1 Whirlpool Comparable Under Sink Water Filter by Tier1
  • WHKF-DB2 Whirlpool Comparable Under Sink Water Filter by Tier1
  • SPC-25-2030 Hydronix Comparable Sediment Water Filter by Tier1
  • SPC-25-2030 Hydronix Comparable Sediment Water Filter by Tier1
  • SPC-25-2050 Hydronix Comparable Sediment Water Filter by Tier1
  • R30-20 Pentek Comparable Sediment Water Filter by Tier1

    R30-20 Pentek Comparable Sediment Water Filter by Tier1

    $11.99 MSRP: $23.99
    Save 50%
  • Culligan D30 Comparable Carbon Block Whole House Water Filter by Tier1
  • CBR2-10 Pentek Comparable Carbon Block Whole House Water Filter by Tier1
  • Floplus 10 Pentek Comparable Carbon Block Whole House Water Filter by Tier1
  • D-30 Culligan Comparable Carbon Block Whole House Water Filter by Tier1
  • CBR2-10R Pentek Comparable Carbon Block Whole House Water Filter by Tier1
  • FXULC GE SmartWater Comparable Undersink Filter Replacement Cartridge by Tier1
  • CHLORPLUS-10 Pentek Comparable Whole House Water Filter by Tier1

Items 1 to 48 of 595 total

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