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 112 total

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  • HYDROLOGIC-22110

    HYDROLOGIC-22110

    $18.99
  • TIER1-KDF55-20BB

    TIER1-KDF55-20BB

    $89.99
    MSRP: $109.99
    Save 18%
  • TIER1-KDF85-10

    TIER1-KDF85-10

    $36.99
  • P10-30 Spun Wound Polypropylene Replacement Filter by Tier1 (10 micron)
  • Hydronix SDC-25-4010 Polypropylene Sediment Filter
  • SDC-25-4010 Hydronix Comparable Whole House Sediment Water Filter by Tier1
  • Culligan Pre-Reverse Osmosis Carbon Block Comparable Filter by Tier1
  • CW-F-D Culligan Comparable Whole House Water Filter 2-Pack by Tier1
  • TIER1-EPM10-20

    TIER1-EPM10-20

    $11.99
  • TIER1-EPM4-20BB

    TIER1-EPM4-20BB

    $36.99
    MSRP: $48.99
    Save 24%
  • AP-GRMB-10PP-20UB Whole House Replacement Cartridge by 3M Aqua-Pure
  • WFPF13003B DuPont Universal Whole House Filtration System
  • APRC1-P AquaPatrol Ice Machine Replacement Water Filter

    APRC1-P AquaPatrol Ice Machine Replacement Water Filter

    $58.05
    MSRP: $94.99
    Save 39%
  • C2-02 Viqua Carbon Whole House Filter

    C2-02 Viqua Carbon Whole House Filter

    $49.99
    MSRP: $89.00
    Save 44%
  • EPM-BB Pentek Comparable Whole House Water Filter by Tier1 (6-Pack)
  • Pentair HEPP10-40DB Pureflex High Efficiency

    Pentair HEPP10-40DB Pureflex High Efficiency

    $93.99
    MSRP: $113.99
    Save 18%
  • Pentair HEPP10-30DB Pureflex High Efficiency Cartridge

    Pentair HEPP10-30DB Pureflex High Efficiency Cartridge

    $107.99
    MSRP: $130.99
    Save 18%
  • Pentair NEPP12-40DB Pureflex Pleated Polypropylene Cartridge
  • SDC-45-2010 Hydronix Water Filter Cartridge
  • EPM-20 Pentek Whole House Water Filter

    Pentek EPM-20 Whole House Water Filter Replacement Cartridge

    $12.39 MSRP: $16.55
    Save 25%
  • EPM-20BB Pentek Whole House Filter Cartridge

    EPM-20BB Pentek Whole House Filter Replacement Cartridge

    $47.99 MSRP: $59.99
    Save 20%
  • Pentek EPM-BB Replacement Water Filter Cartridge
  • Pentek NCP-20 Whole House Water Filter Replacement Cartridge

    Pentek NCP-20 Whole House Water Filter Replacement Cartridge

    $15.89 MSRP: $20.57
    Save 23%
  • NCP-20BB Pentek Whole House Filter Replacement

    NCP-20BB Pentek Whole House Filter Replacement Cartridge

    $29.89 MSRP: $36.67
    Save 18%
  • NCP-BB Pentek Whole House Water Filter

    NCP-BB Pentek Whole House Filter Replacement Cartridge

    $18.09 MSRP: $23.10
    Save 22%
  • EPM-10 Pentek Comparable Undersink Filter Replacement Cartridge by Tier1
  • EPM-BB Pentek Comparable Carbon Whole House Water Filter
  • Pentek WS-10 Water Softening Water Filter

    Pentek WS-10 Water Softening Filter

    $19.99 MSRP: $24.83
    Save 19%
  • RS14-SS OmniFilter Whole House Water Filter
  • EPM-BB Pentek Comparable Whole House Water Filter by Tier1 (12-Pack)
  • EPM-BB Pentek Comparable Whole House Water Filter by Tier1 (4-Pack)
  • EPM-BB Pentek Comparable Whole House Water Filter by Tier1 (25-Pack)
  • PS5-10C Pentek Comparable Sediment Water Filter by Tier1
  • SDC-45-1010 Hydronix Comparable Sediment Water Filter by Tier1
  • Pentek PD-10-20 Comparable Sediment Water Filter by Tier1
  • SDC-45-2010 Hydronix Comparable Sediment Water Filter by Tier1
  • PB1-HD20 KX Matrikx Comparable Whole House Carbon Water Filter by Tier1
  • 22070 Hydrologic Comparable Whole House Carbon Filter by Tier1
  • EPM-20BB Pentek Comparable Whole House Water Filter by Tier1

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

    $39.99 MSRP: $48.99
    Save 18%
  • W5W American Plumber Comparable Whole House Sediment Filter Cartridge by Tier1 (2-Pack)
  • Pentek KE10G2S Polyester Filter Bag
  • Pentek KO10G2S Polyester Filter Bag

    Pentek KO10G2S Polyester Filter Bag

    $7.19
    MSRP: $10.99
    Save 35%

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