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  • Your filters are guaranteed to be the right fit!
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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.

Items 1 to 48 of 130 total

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  • P5-20 Pentek Whole House Filter Replacement Cartridge (12-Pack)
  • 602974 Viqua Quartz Sleeve for 602854 UV Lamp

    602974 Viqua Quartz Sleeve for 602854 UV Lamp

    $50.99 Retail Price:  $68.00
  • P5-10BB Tier1 Sediment Water Filter (4-pack)
  • FRSS-1.5 Sterilight 1.5 GPM 1/2-inch Flow Restrictor
  • FRSS-1.5 Viqua 1.5 GPM 1/2-inch Flow Restrictor

    FRSS-1.5 Viqua 1.5 GPM 1/2-inch Flow Restrictor

    $52.99 Retail Price:  $90.00
  • Pentair GF20-40BPPPDB Industrial Triflex Microfiberglass Cartridge
  • DuPont WFROM1000X Quick Twist Reverse Osmosis Membrane
  • C2-02 Advanced Water Products 20-inch x 4.5-inch Replacement Carbon Whole House Filter
  • C2-02 Viqua Carbon Whole House Filter

    C2-02 Viqua Carbon Whole House Filter

    $54.99 Retail Price:  $89.00
  • 602975 Viqua Quartz Sleeve for 602855 UV Lamp

    602975 Viqua Quartz Sleeve for 602855 UV Lamp

    $57.99 Retail Price:  $77.00
  • Pentair GF20-30BPPPDB Industrial Triflex Microfiberglass Cartridge
  • APRC1-P AquaPatrol Ice Machine Replacement Water Filter

    APRC1-P AquaPatrol Ice Machine Replacement Water Filter

    $58.05 Retail Price:  $94.99
  • WSQC-2 WaterSentinel Reverse Osmosis Carbon GAC Filter Cartridge
  • Pentek 150236 Big Blue Heavy Duty Filter Housing

    Pentek 150236 Big Blue Heavy Duty Filter Housing

    $58.99 Retail Price:  $73.99
  • SDC-45-1005 Hydronix Whole House Sediment Filter Cartridge (6-Pack)
  • 8017757 Katadyn MyBottle Ultralight Series 24-Ounce Personal Water Purifier Bottle - Green Deer
  • QS-012 Viqua Quartz Sleeve for S740RL-4C UV Lamp

    QS-012 Viqua Quartz Sleeve for S740RL-4C UV Lamp

    $59.99 Retail Price:  $77.00
  • 22120 Hydrologic Stealth RO 100GPD Membrane

    22120 Hydrologic Stealth RO 100GPD Membrane

    $59.99 Retail Price:  $64.99
  • Hydronix HF45-10BLBK15 Filter Housing (Blue)

    Hydronix HF45-10BLBK15 Filter Housing (Blue)

    $59.99 Retail Price:  $75.99
  • 602974 Trojan UV Max Quartz Sleeve
  • Pentek 166142 Big White 20-inch x 4.5-inch Filter Housing
  • W9123053 Doulton UltraCarb Undersink Ceramic Candle Replacement Filter Cartridge
  • ZR-006 ZeroWater Replacement Filter Cartridge (4-Pack)

    ZR-006 ZeroWater Replacement Filter Cartridge (4-Pack)

    $55.99 Retail Price:  $79.99
  • 36002017 PURA UV Lamp

    36002017 PURA UV Lamp

    $57.99 Retail Price:  $59.79
  • HF10-MS Cuno Whole House Filter Replacement Cartridge

    HF10-MS Cuno Whole House Filter Replacement Cartridge

    Regular Price: $65.99

    Special Price: $50.05

  • HF20 Cuno Whole House Filter Replacement Cartridge

    HF20 Cuno Whole House Filter Replacement Cartridge

    Regular Price: $64.99

    Special Price: $50.05

  • W9223021 Doulton Ceramic Water Filter

    W9223021 Doulton Ultracarb Ceramic Water Filter

    $50.05 Retail Price:  $70.14
  • W9122190 Doulton SuperCarb SI Replacement Element

    W9122190 Doulton SuperCarb SI Ceramic Water Filter

    $50.36 Retail Price:  $60.21
  • C-LC 3M Aqua-Pure Undersink Water Filter

    C-LC 3M Aqua-Pure Undersink Water Filter Cartridge

    $50.99 Retail Price:  $65.54
  • CB3 OmniFilter Undersink Filter Replacement Cartridge
  • 1-40101-W Seychelle Family Water Pitcher
  • HM8-CM Sprite PureMist Filtered Shower Handle - Chrome
  • CQE-SP-00804 Crystal Quest Luxury Handheld Shower Filter System
  • FM-5 Culligan Level 3 On-Tap Faucet Filter System
  • W9125030 Doulton Specialty Replacement Filter Cartridge
  • 153070 Pentek Filter Housing Sump

    153070 Pentek Filter Housing Sump

    $51.99 Retail Price:  $57.95
  • 3G-STANDARD-20-CLEAR-PR20 Pentek Whole House 20 inch Filter Housing
  • RC-5 Rainshow’r Replacement Water Filter

    RC-5 Rainshow’r Replacement Water Filter

    $51.99 Retail Price:  $65.99
  • 4373575 Whirlpool Undersink Filter Kit

    4373575 Whirlpool Undersink Filter Kit

    Regular Price: $59.99

    Special Price: $52.05

  • CFS8720 Cuno Whole House Filter Replacement Cartridge

    CFS8720 Cuno Whole House Filter Replacement Cartridge

    $52.05 Retail Price:  $61.97
  • CFS9112 Cuno Whole House Filter Replacement Cartridge

    CFS9112 Cuno Whole House Filter Replacement Cartridge

    Regular Price: $62.99

    Special Price: $52.05

  • 3M Aqua-Pure AP317 Water Filter Replacement Cartridge
  • 3M Aqua-Pure AP810-2 Whole House Water Filter Cartridge
  • C-CYST-FF 3M Aqua-Pure Undersink Water Filter

    C-CYST-FF 3M Aqua-Pure Undersink Water Filter Cartridge

    $52.99 Retail Price:  $56.34
  • EV9612-71 Everpure 4K Plus Replacement Filter Cartridge

    EV9612-71 Everpure 4K Plus Replacement Filter Cartridge

    $52.99 Retail Price:  $59.79

Items 1 to 48 of 130 total

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