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 193 to 240 of 2182 total

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  • AF-10-2011 Aries Specialty Cartridge 10-inch x 2.5-inch 1 LBS KDF/GAC
  • ROR2000-S-05 OmniFilter Reverse Osmosis Pre Filter Replacement
  • 150564 Pentek Whole House Water Filter System (Clear/ Blue)
  • 255541-43 Pentek Inline Water Filter Replacement
  • WSQC-2 WaterSentinel Reverse Osmosis Carbon GAC Filter Cartridge
  • 150072 Pentek 3/4-inch #10 Standard Blue/Clear Filter Housing
  • 158098 Pentek Slim Line Water Filter Housing System

    158098 Pentek Slim Line Water Filter Housing System

    $15.99
    MSRP: $19.99
    Save 20%
  • 158203 Pentek Slim Line Black/Blue w/PR Water Filter System
  • 22120 Hydrologic Stealth RO 100GPD Membrane

    22120 Hydrologic Stealth RO 100GPD Membrane

    $59.99
    MSRP: $64.99
    Save 8%
  • 35735 Brita Pacifica Pitcher Filter System
  • FiftyFifty V18001SS0 Water Bottle (18 oz)

    FiftyFifty V18001SS0 Water Bottle (18 oz)

    $17.99
    MSRP: $25.99
    Save 31%
  • FiftyFifty V24001SS0 Insulated Wide Mouth Water Bottle (24 oz.)
  • UV100A1059 Honeywell UV Surface Treatment System

    UV100A1059 Honeywell UV Surface Treatment System

    $176.99
    MSRP: $241.99
    Save 27%
  • Brita 23.7-oz Hard-Sided Water Bottle – Light Pink (#35811)
  • K5666-KK Omnipure Inline Fluoride Filter

    K5666-KK Omnipure Inline Fluoride Filter

    $38.99
    MSRP: $50.99
    Save 24%
  • Pentek 158599 Clear 3G Slim Line Filter Housing

    Pentek 158599 Clear 3G Slim Line Filter Housing

    $22.99
    MSRP: $28.99
    Save 21%
  • Pentek 158637 Clear 3G Slim Line Filter Housing with Pressure Relief
  • RFC-93 Pentek Radial Flow Carbon Water Filter Cartridge

    RFC-93 Pentek Radial Flow Carbon Water Filter Cartridge

    $23.99
    MSRP: $27.99
    Save 14%
  • Pentek 150236 Big Blue Heavy Duty Filter Housing

    Pentek 150236 Big Blue Heavy Duty Filter Housing

    $58.99
    MSRP: $73.99
    Save 20%
  • Pentek 158214 Clear Traditional Slim Line Filter Housing

    Pentek 158214 Clear Traditional Slim Line Filter Housing

    $27.99
    MSRP: $37.99
    Save 26%
  • 200520 Axeon 2540 PVC Membrane Housing

    200520 Axeon 2540 PVC Membrane Housing

    $98.99
    MSRP: $122.99
    Save 20%
  • 200521 Axeon 4014 PVC Membrane Housing

    200521 Axeon 4014 PVC Membrane Housing

    $139.99
    MSRP: $173.99
    Save 20%
  • WB-HB-20-20W Harmsco Pleated Commercial Water Filter Cartridge
  •  WB-HB-20-50W Harmsco Pleated Commercial Water Filter Cartridge
  • K2528-KK Omnipure GAC Inline Water Filter

    K2528-KK Omnipure GAC Inline Water Filter

    $11.99
    MSRP: $17.99
    Save 33%
  • BF7-S-06 OmniFilter Undersink Filter System

    BF7-S-06 OmniFilter Undersink Filter System

    $81.99
    MSRP: $85.99
    Save 5%
  • 150240 Pentek 10-inch Big Blue Housing

    150240 Pentek 10-inch Big Blue Housing

    $29.99
    MSRP: $42.00
    Save 29%
  • W50PEHD American Plumber Comparable 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
  • Pentair NEPP12-20DB Pureflex Pleated Polypropylene Cartridge
  • Pentair NEPP2-40DB Pureflex Pleated Polypropylene Cartridge

    Pentair NEPP2-40DB Pureflex Pleated Polypropylene Cartridge

    $41.99
    MSRP: $52.99
    Save 21%
  • Pentair NEPP2-20DB Pureflex Pleated Polypropylene Cartridge

    Pentair NEPP2-20DB Pureflex Pleated Polypropylene Cartridge

    $62.99
    MSRP: $77.99
    Save 19%
  • Garnet-812 Watts Water Treatment Media #8-12

    Garnet-812 Watts Water Treatment Media #8-12

    $31.99
    MSRP: $40.99
    Save 22%
  • TW30HP-2526 Filmtec Reverse Osmosis Membrane
  • P195BN Cuno Water Filter Cartridge

    P195BN 3M Cuno Water Filter Cartridge

    $176.99
    MSRP: $237.99
    Save 26%
  • Pentair GF20-40BPPPDB Industrial Triflex Microfiberglass Cartridge
  • Pentair GF20-30BPPPDB Industrial Triflex Microfiberglass Cartridge
  • AWP117 Viqua Carbon Block Filter for S2Q-DWS UV System

    AWP117 Viqua Carbon Block Filter for S2Q-DWS UV System

    $10.99
    MSRP: $15.99
    Save 31%
  • CB6 Multipure Aquaversa Comparable Water Filter: HDG-CB6-14 HydroGuard

    CB6 Comparable Water Filter: HDG-CB6-14 HydroGuard

    $29.99
    MSRP: $43.99
    Save 32%
  • Hydronix HF45-10BLBK15 Filter Housing (Blue)

    Hydronix HF45-10BLBK15 Filter Housing (Blue)

    $59.99
    MSRP: $75.99
    Save 21%
  • Aries AF-10-2054 Coconut Granular Activated Carbon

    Aries AF-10-2054 Coconut Granular Activated Carbon

    $75.99
    MSRP: $91.99
    Save 17%
  • Aries AF-10-2115 KDF/Granular Activated Carbon

    Aries AF-10-2115 KDF/Granular Activated Carbon

    $39.99
    MSRP: $49.00
    Save 18%
  • Everpure EV9000-91 Antique Brass Drinking Faucet Head

    Everpure EV9000-91 Antique Brass Drinking Faucet Head

    $127.49
    MSRP: $153.99
    Save 17%
  • Viqua VT4-DWS11 Ultraviolet Filtration System

    Viqua VT4-DWS11 Ultraviolet Filtration System

    $448.49
    MSRP: $529.99
    Save 15%
  • 5073 Keurig Comparable Replacement Water Filter Cartridge Refills by Tier1 (6-Pack)
  • DCC-RWF Cuisinart Comparable Replacement Coffee Water Filter by Tier1 (6-Pack)

Items 193 to 240 of 2182 total

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