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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  • EPM-BB Pentek Comparable Carbon Whole House Water Filter

    EPM-BB Pentek Comparable Whole House Water Filter by Tier1

    $17.99 MSRP: $30.99
    Save 42%
  • Tier1 P20-20BB Whole House Replacement Sediment Filter Cartridge
  • Brita Intenza Plus Comparable Coffee Water Filter Replacement by Tier1
  • EPM-BB Pentek Comparable Whole House Water Filter by Tier1

    EPM-BB Pentek Comparable Whole House Water Filter by Tier1

    $17.99 MSRP: $30.99
    Save 42%
  • 22110 Hydrologic SmallBoy Replacement Carbon Filter - Green
  • WHKF-DWHB Whirlpool Comparable Whole House Sediment Water Filter by Tier1
  • TIER1-DGD1-20BB Whole House Sediment Water Filter
  • R30-20BB Pentek Comparable Whole House Sediment Water Filter by Tier1
  • 602636 Viqua Replacement Power Cord

    602636 Viqua Replacement Power Cord

    $18.99
    MSRP: $21.34
    Save 11%
  • 603000 Viqua Safety Cap

    603000 Viqua Safety Cap

    $18.99
    MSRP: $21.34
    Save 11%
  • AF-10-1053 Aries Specialty Cartridge Hydrogen Sulfide Removal
  • PH-2011R Tier1 Pen Type pH Meter

    PH-2011R Tier1 Pen Type pH Meter

    $18.99
    MSRP: $26.99
    Save 30%
  • CW-MF Pentek Comparable Whole House Sediment Water Filter by Tier1 (4-Pack)
  • SDC-45-2010 Hydronix Comparable Sediment Water Filter by Tier1
  • HB-20-50W Harmsco Comparable Whole House Sediment Water Filter by Tier1
  • Everpure EV9618-02 Comparable Food Service Replacement Filter by Tier1
  • EV9618-02 Everpure Comparable Food Service Replacement Filter by Tier1
  • EV9618-01 Everpure Comparable Food Service Replacement Filter by Tier1
  • EV9618-06 Everpure Comparable Food Service Replacement Filter by Tier1
  • E5420-P-1M-SB Omnipure Comparable Food Service Replacement Filter by Tier1
  • AP317 Aquapure Comparable Food Service Replacement Filter by Tier1
  • SDC-45-2050 Hydronix Comparable Sediment Water Filter by Tier1
  • Hydronix SDC-45-2005 Whole House Sediment Filter Cartridge
  • Hydronix SPC-45-1020 Pleated Sediment Water Filter
  • Pentek CHLORPLUS-10 Whole House Water Filter Replacement Cartridge
  • Pentek WS-10 Water Softening Water Filter

    Pentek WS-10 Water Softening Filter

    $19.99 MSRP: $24.83
    Save 19%
  • Hydronix SDC-25-3075 Polypropylene Sediment Filter

    Hydronix SDC-25-3075 Polypropylene Sediment Filter

    $10.99
    MSRP: $11.37
    Save 3%
  • Pentek BN-420-100 Nylon Filter Bag

    Pentek BN-420-100 Nylon Filter Bag

    $11.39
    MSRP: $18.99
    Save 40%
  • Pentek BN-420-400 Nylon Filter Bag

    Pentek BN-420-400 Nylon Filter Bag

    $11.39
    MSRP: $19.99
    Save 43%
  • ws03x10012 GE SmartWater Reverse Osmosis Filter O-Ring

    ws03x10012 GE SmartWater Reverse Osmosis Filter O-Ring

    $11.99
    MSRP: $13.79
    Save 13%
  • Hydronix SDC-25-3001 Polypropylene Sediment Filter
  • Hydronix SDC-25-4005 Polypropylene Sediment Filter

    Hydronix SDC-25-4005 Polypropylene Sediment Filter

    $11.99
    MSRP: $13.56
    Save 12%
  • Pentek BN-410-200 Nylon Filter Bag

    Pentek BN-410-200 Nylon Filter Bag

    $11.99
    MSRP: $14.34
    Save 16%
  • Hydronix SDC-25-4010 Polypropylene Sediment Filter

    Hydronix SDC-25-4010 Polypropylene Sediment Filter

    $12.99
    MSRP: $14.34
    Save 9%
  • Hydronix SDC-25-4025 Polypropylene Sediment Filter

    Hydronix SDC-25-4025 Polypropylene Sediment Filter

    $12.99
    MSRP: $14.34
    Save 9%
  • Hydronix SDC-25-4050 Polypropylene Sediment Filter

    Hydronix SDC-25-4050 Polypropylene Sediment Filter

    $12.99
    MSRP: $14.34
    Save 9%
  • Hydronix SDC-25-4075 Polypropylene Sediment Filter

    Hydronix SDC-25-4075 Polypropylene Sediment Filter

    $12.99
    MSRP: $14.34
    Save 9%
  • Pentek 158114 10-inch Standard Filter Housing

    Pentek 158114 10-inch Standard Filter Housing

    $12.99
    MSRP: $15.34
    Save 15%
  • Pentek CFB-PB10 Lead & Cyst Carbon Filter

    Pentek CFB-PB10 Lead & Cyst Carbon Filter

    $13.99
    MSRP: $17.12
    Save 18%
  • Pentek PS5-30C Polypropylene Sediment Filter
  • Pentek PD-1-30 Polypropylene Sediment Filter
  • Pentek KO1HE3 Polypropylene High Efficiency Filter Bag

    Pentek KO1HE3 Polypropylene High Efficiency Filter Bag

    $16.99
    MSRP: $19.34
    Save 12%
  • Nubo 57-3038 Ocean Blue Neoprene Bottle Cover

    Nubo 57-3038 Ocean Blue Neoprene Bottle Cover

    $17.99
    MSRP: $20.34
    Save 12%
  • Harmsco PO-25-G1PS-EA Polypropylene Filter Bag

    Harmsco PO-25-G1PS-EA Polypropylene Filter Bag

    $18.99
    MSRP: $21.34
    Save 11%
  • ZR-001 ZeroWater Replacement Filter Cartridge

    ZR-001 ZeroWater Replacement Filter Cartridge

    $19.99
    MSRP: $20.69
    Save 3%

Items 145 to 192 of 542 total

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