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

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 133 total

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  • 8017757 Katadyn MyBottle Ultralight Series 24-Ounce Personal Water Purifier Bottle - Green Deer
  • AF-20-3690-BB Aries Replacement Whole House Fluoride Removal Filter

    AF-20-3690-BB Aries Whole House Fluoride Removal Filter

    $126.05
    MSRP: $171.99
    Save 27%
  • WFFM350XBN DuPont Deluxe Faucet Mount Drinking Water Filter - Brushed Nickel
  • 200362 Axeon TF-1812-150 Residential Reverse Osmosis Membrane
  • 208083 Axeon HF5-2521 Commercial Reverse Osmosis Membrane

    208083 Axeon HF5-2521 Commercial Reverse Osmosis Membrane

    $119.99
    MSRP: $143.99
    Save 17%
  • 208084 Axeon HF5-2540 Commercial Reverse Osmosis Membrane

    208084 Axeon HF5-2540 Commercial Reverse Osmosis Membrane

    $199.99
    MSRP: $259.99
    Save 23%
  • 208125 Axeon HF5-2514 Commercial Reverse Osmosis Membrane

    208125 Axeon HF5-2514 Commercial Reverse Osmosis Membrane

    $109.99
    MSRP: $130.99
    Save 16%
  • Axeon TF-3012-500 Reverse Osmosis Membrane

    Axeon TF-3012-500 Reverse Osmosis Membrane

    $114.99
    MSRP: $150.99
    Save 24%
  • ICF-2512-ALK Hydronix Inline Coconut Carbon Filter Cartridge
  • DUPONT-WFQTC90001
  • DuPont WFRO60X Quick Twist Reverse Osmosis System
  • DuPont WFQTR130004 Quick Twist Refrigerator/Icemaker Filter System
  • DuPont WFFS150XCH Chrome Counter Top Faucet System
  • K5666-KK Omnipure Inline Fluoride Filter

    K5666-KK Omnipure Inline Fluoride Filter

    $38.99
    MSRP: $50.99
    Save 24%
  • K2528-KK Omnipure GAC Inline Water Filter

    K2528-KK Omnipure GAC Inline Water Filter

    $11.99
    MSRP: $17.99
    Save 33%
  • 150240 Pentek 10-inch Big Blue Housing

    150240 Pentek 10-inch Big Blue Housing

    $29.99
    MSRP: $42.00
    Save 29%
  • TW30HP-2526 Filmtec Reverse Osmosis Membrane
  • Everpure EV9000-91 Antique Brass Drinking Faucet Head

    Everpure EV9000-91 Antique Brass Drinking Faucet Head

    $127.49
    MSRP: $153.99
    Save 17%
  • Desal TFM-18-C Reverse Osmosis Membrane

    Desal TFM-18-C Reverse Osmosis Membrane

    $30.99
    MSRP: $38.99
    Save 21%
  • Pentek WS-10 Water Softening Water Filter

    Pentek WS-10 Water Softening Filter

    $19.99 MSRP: $24.83
    Save 19%
  • Brondell H2O+ Circle Reverse Osmosis Water Filtration System
  • 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
  • WHKF-DB1 Whirlpool Comparable Under Sink Water Filter by Tier1
  • WHKF-DB2 Whirlpool Comparable Under Sink Water Filter by Tier1
  • AF-10-3690 Aries Replacement Fluoride Filter Cartridge

    AF-10-3690 Aries Replacement Fluoride Filter Cartridge

    $28.99
    MSRP: $32.19
    Save 10%
  • CQE-CT-00142 Crystal Quest Countertop Reverse Osmosis Filter System
  • CQE-RC-04002 Crystal Quest PLUS Multi-Stage Replacement Filter Cartridge
  • CQE-RC-04008 Crystal Quest Arsenic Filter Cartridge

    CQE-RC-04008 Crystal Quest Arsenic Filter Cartridge

    $70.99
    MSRP: $83.94
    Save 15%
  • CQE-RC-04049 Crystal Quest Fluoride Multi Replacement Filter Cartridge
  • CQE-RC-04051 Crystal Quest Arsenic Multi Replacement Filter Cartridge
  • DD-7098 Daewoo Inline Filter

    DD-7098 Daewoo Inline Filter

    $28.99
    MSRP: $31.34
    Save 7%
  • TLC-150EB Desal Encapsulated Reverse Osmosis Membrane
  • W9121214 Doulton ATC Super Sterasyl Replacement Element
  • W9121715 Doulton Supersterasyl Undersink Ceramic Candle Replacement Filter Cartridge
  • W9121750 Doulton Supersterasyl Undersink Ceramic Candle Replacement Filter Cartridge
  • W9361122 Doulton Countertop Filter System

    W9361122 Doulton SS2 Countertop Filter System

    $199.97
    MSRP: $232.27
    Save 14%
  • EV9275-70 Everpure QL2-OW200L Filter System

    EV9275-70 Everpure QL2-OW200L Filter System

    $70.05
    MSRP: $124.19
    Save 44%
  • PCF1-10MB Pentek Whole House Filter Replacement Cartridge
  • TQ56-36FC PuROTwist PuROTwist Reverse Osmosis Membrane
  • W-1812-24 Watts Replacement Reverse Osmosis Membrane

    W-1812-24 Watts Reverse Osmosis Membrane Replacement

    $21.99
    MSRP: $40.24
    Save 45%

Items 1 to 48 of 133 total

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