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!

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  • Your filters are guaranteed to be the right fit!
  • Our products are price match guaranteed!
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  • You’re guaranteed to find expert help!

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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 140 total

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  • P-12 Under Sink Water Replacement Filter Cartridge by Tier1
  • 35430 Brita Grand Pitcher Orange

    35430 Brita Grand Pitcher Orange

    $41.99
    MSRP: $45.99
    Save 9%
  • Pentair NEPP2-40DB Pureflex Pleated Polypropylene Cartridge

    Pentair NEPP2-40DB Pureflex Pleated Polypropylene Cartridge

    $41.99
    MSRP: $52.99
    Save 21%
  • CB6 OmniFilter Comparable Whole House Carbon Water Filter by Tier1
  • KX-MATRIKX-1-HD10 KX Matrikx Comparable Whole House Carbon Water Filter By Tier1
  • FLOPLUS-10BB Pentek Comparable Whole House Carbon Water Filter by Tier1
  • TFM-50-A Tier1 Reverse Osmosis Membrane

    TFM-50-A Tier1 Reverse Osmosis Membrane

    $45.99
    MSRP: $55.19
    Save 17%
  • 1-40100-2-RES Seychelle Dual Filter and Reservoir

    1-40100-2-RES Seychelle Dual Filter and Reservoir

    $45.99
    MSRP: $49.95
    Save 8%
  • TFM-50 Comparable Reverse Osmosis Membrane by Tier1

    TFM-50 Comparable Reverse Osmosis Membrane by Tier1

    $45.99 MSRP: $55.19
    Save 17%
  • TW30-1812-50 Watts Comparable Reverse Osmosis Membrane by Tier1
  • TW30-1812-50 Filmtec Comparable Reverse Osmosis Membrane by Tier1
  • TF-1812-50 Axeon Comparable Reverse Osmosis Membrane by Tier1
  • WS01-WH Filtrete Water Station Filtered Water Bottle Filling Station
  • EPM-20BB Pentek Whole House Filter Cartridge

    EPM-20BB Pentek Whole House Filter Replacement Cartridge

    $47.99 MSRP: $59.99
    Save 20%
  • EP5-20BB Tier1 Carbon Block Water Filter

    EP5-20BB Tier1 Carbon Block Water Filter

    $47.99 MSRP: $69.77
    Save 31%
  • MAXETW-FF20 Watts Comparable C-MAX Whole House Water Filter Cartridge by Tier1
  • CB-45-2010 Hydronix Comparable Replacement Filter Cartridge by Tier1
  • 602733 Viqua Quartz Sleeve for 602806 UV Lamp

    602733 Viqua Quartz Sleeve for 602806 UV Lamp

    $49.00
    MSRP: $64.00
    Save 23%
  • FQK2J GE Undersink Water Filter Set
  • C2-02 Viqua Carbon Whole House Filter

    C2-02 Viqua Carbon Whole House Filter

    $49.99
    MSRP: $89.00
    Save 44%
  • Pentair NEPP12-40DB Pureflex Pleated Polypropylene Cartridge
  • 10-212 Pentek UV Lamp

    10-212 Pentek UV Lamp

    $49.69
    MSRP: $64.99
    Save 24%
  • 67300 Aquamira Home Emergency Drinking Water Kit
  • APHOSF-RC 3M Aqua-Pure High-Output Shower Filter Cartridge
  • 3M Aqua-Pure APIL3R Inline Water Filter
  • FXHTC GE SmartWater Whole House Filter Replacement Cartridge
  • VIH-34-PR10 Pentek Whole House Valve-in-Head 10 inch Filter Housing
  • RS-502-DS Rainshowr Shower Filter System with Whedon Designer Shower Head - Chrome
  • 47-55711G2 Water Factory Systems Whole House Replacement Filter Cartridge
  • MATRIKX-5-HD10 KX Technologies MatrikX Whole House Filter Replacement Cartridge
  • Brita Ultramax Water Filter Pitcher
  • 3M Aqua-Pure AP110-3C Whole House Water Filter

    AP110-3C 3M Aqua-Pure Water Filter Cartridge

    $40.99
    MSRP: $49.44
    Save 17%
  • W9122190 Doulton SuperCarb SI Replacement Element

    W9122190 Doulton SuperCarb SI Ceramic Water Filter

    $41.00
    MSRP: $60.21
    Save 32%
  • W9123019 Doulton UltraCarb SI Replacement Element

    W9123019 Doulton UltraCarb SI Ceramic Filter Candle

    $41.00
    MSRP: $66.48
    Save 38%
  • RS-502-MS Rainshowr Shower Filter System with Massage - White
  • HFPP-112-PR10 Pentek Big Blue Whole House 10 inch Filter Housing
  • E5715-P Omnipure Replacement Filter Cartridge

    E5715-P Omnipure Replacement Filter Cartridge

    $41.19
    MSRP: $55.99
    Save 26%
  • 3M Aqua-Pure APLPSF-PC Low Profile Shower Filter - Chrome
  • 42632 Brita Chrome SMART OB39 64-Ounce Water Pitcher
  • 3US-AS01 Filtrete Undersink Filter System

    3US-AS01 Filtrete Undersink Filter System

    $41.99
    MSRP: $50.59
    Save 17%
  • GXULQR GE Undersink Water Filter Replacement Cartridge
  • HFPP-34-PR-10 Pentek Big Blue Whole House 10 inch Filter Housing
  • QMP602 QMP Countertop Water Filter System

    QMP602 QMP Countertop Filter System

    $41.99
    MSRP: $45.99
    Save 9%
  • AE7-CM Sprite Shower Pure 7 Filtered Shower Head (Chrome)

    Sprite AE7-CM Shower Pure 7 Filtered Shower Head (Chrome)

    $41.99
    MSRP: $54.00
    Save 22%
  • EV9272-18 Everpure QL2 Single Filter Head with Bracket and 3/8 inch NPT threads

Items 1 to 48 of 140 total

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