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 224 total

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  • 8014522 Katadyn Micro Ultralight Series 21-Ounce Personal Water Purifier Bottle - Blue
  • Body Glove Water Filter Bottle (20 oz. # WI-BG-Bottle-20)

    Body Glove Water Filter Bottle (20 oz. # WI-BG-Bottle-20)

    $36.99
    MSRP: $49.95
    Save 26%
  • 35618 Brita Faucet Filter System - Chrome - 1

    Brita Chrome Faucet Filter System (#35618)

    $30.05
    MSRP: $59.79
    Save 50%
  • ACC5-CM Sprite Cascade Filtered Shower Head (5-Setting)

    ACC5-CM Sprite Cascade Filtered Shower Head (5-Setting)

    $30.05
    MSRP: $55.19
    Save 46%
  • QC10-CBR-THREADED Pentek Undersink Quick-Change Filter System
  • CR-5000 PUR Flavor Options 56-Ounce Water Pitcher
  • 3M Aqua-Pure AP431 Inline Filter Replacement Cartridge

    AP431 3M Aqua-Pure Inline Filter Replacement Cartridge

    $30.99
    MSRP: $49.56
    Save 37%
  • 3M Aqua-Pure AP814 Whole House Water Filter
  • 42412 Brita Atlantis OB32 48-Ounce Water Pitcher

    42412 Brita Atlantis OB32 48-Ounce Water Pitcher

    $30.99
    MSRP: $44.84
    Save 31%
  • 1000R-D Culligan Level 3 Undersink RV and Marine Icemaker and Drinking Water Filter
  • DD-7098 Daewoo Inline Filter

    DD-7098 Daewoo Inline Filter

    $30.99
    MSRP: $40.99
    Save 24%
  • W9120562 Doulton Sterasyl Undersink Ceramic Candle Replacement Filter Cartridge
  • Whirlpool WHKF-DB2 Undersink Replacement Water Filter Cartridge
  • MATRIKX-1-20 KX Technologies MatrikX Whole House Filter Replacement Cartridge
  • Q5515-P Omnipure Replacement Filter Cartridge

    Q5515-P Omnipure Replacement Filter Cartridge

    $30.99
    MSRP: $43.99
    Save 30%
  • W9220402 Doulton Slim Line Replacement Ceramic Filter

    W9220402 Doulton Slim Line Replacement Ceramic Filter

    $30.99
    MSRP: $34.55
    Save 10%
  • BB-CM Sprite Bath Ball Filter (Chrome)

    BB-CM Sprite Bath Ball Filter (Chrome)

    $30.99
    MSRP: $39.99
    Save 23%
  • 3G-STANDARD-34-PR20 Pentek Whole House Standard 20 inch Filter Housing
  • 1-40100-W Seychelle Family Water Pitcher Regular Replacement Filter
  • 600R American Plumber Undersink Filter Replacement Cartridge

    600R American Plumber Undersink Water Filter Cartridge

    $31.99
    MSRP: $35.06
    Save 9%
  • 35250 Brita Space Saver Calendar-Minder OB21 48-Ounce Water Pitcher
  • RDA-150 Culligan Shower Exstension Arm

    RDA-150 Culligan Shower Exstension Arm

    $31.99
    MSRP: $38.51
    Save 17%
  • HB-20-5W Harmsco Calypso Blue Replacement Filter Cartridge

    HB-20-5W Harmsco Calypso Blue Replacement Filter Cartridge

    $31.99
    MSRP: $36.79
    Save 13%
  • BB-WH Sprite Filtered Bath Ball - White

    BB-WH Sprite Bath Ball Filter (White)

    $31.99
    MSRP: $34.34
    Save 7%
  • MATRIKX-CTO2-20 KX Technologies MatrikX Whole House Filter Replacement Cartridge
  • MATRIKX-CTO2-HD10 KX Technologies MatrikX Whole House Filter Replacement Cartridge
  • 800R OmniFilter Quick Change Replacement Filter Cartridge
  • ELF-1ML Omnipure Replacement Filter Cartridge

    ELF-1ML Omnipure Replacement Filter Cartridge

    $31.99
    MSRP: $40.24
    Save 21%
  • CQE-SP-00800 Crystal Quest Luxury Shower Power Filter
  • CFS117-S Cuno Whole House Filter Replacement Cartridge

    CFS117-S Cuno Whole House Filter Replacement Cartridge

    $32.05
    MSRP: $40.24
    Save 20%
  • 3M Aqua-Pure AP-250R Under Sink Water Filter

    AP-250R 3M Aqua-Pure Undersink Water Filter Cartridge

    $32.09
    MSRP: $47.99
    Save 33%
  • SH-Filter H2O International Shower Replacement Filter Cartridge
  • Bath-3000 Rainshowr Crystal Ball Bath Dechlorinator
  • 47-55704G2 Water Factory Systems Replacement Filter Cartridge
  • PF-500 OmniFilter 14-cup Water Pitcher

    PF-500 OmniFilter Water Filter Pitcher (14-Cup)

    $32.09
    MSRP: $49.99
    Save 36%
  • Q5615 Omnipure Replacement Filter Cartridge

    Q5615 Omnipure Replacement Filter Cartridge

    $32.09
    MSRP: $39.99
    Save 20%
  • LF-EC32-CP Hydronix Elegant Ceramic Faucet with 3-inch Shank
  • W9121202 Doulton AquaCera Supersterasyl Undersink Ceramic Candle Replacement Filter Cartridge
  • CBC-20 Pentek Replacement Filter Cartridge
  • QC10-CB1 Pentek Undersink Quick-Change Filter System

    QC10-CB1 Pentek Quick-Change Water Filtration System

    $32.95
    MSRP: $40.99
    Save 20%
  • 42557 Brita Riviera SMART OB35 64-Ounce Water Pitcher
  • 42201 Brita On-Tap FF-100 Faucet Filter System - White

    42201 Brita On-Tap FF-100 Faucet Filter System - White

    $32.99
    MSRP: $42.54
    Save 22%
  • 42402 Brita On-Tap FR-200 Faucet Filter Replacement Cartridge - White (2-Pack)
  • 4WH-HDGAC-F01 Filtrete Replacement Filter Cartridge

    4WH-HDGAC-F01 3M Filtrete Water Filter Cartridge

    $32.99
    MSRP: $41.39
    Save 20%
  • WP01-WH-12 Filtrete Fast Flow Water Filter Pitcher

Items 1 to 48 of 224 total

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