Discount Water Filters and Air Filters at Discount Filter Store.com

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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 310 total

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  • FC-600L PUR Flavor Options Flavor Options Replacement Cartridge
  • FC-600S PUR Flavor Options Flavor Options Replacement Cartridge
  • KPPA Klean Kanteen Sippy-Top Bottle Adapter
  • KBINER3 Klean Kanteen S-Biner #3 Stainless Steel S Shaped Carabiner
  • KPPF Klean Kanteen Flat Cap
  • KPPS Klean Kanteen Sport Cap
  • KBINER4 Klean Kanteen S-Biner #4 Stainless Steel S Shaped Carabiner
  • Funbottle-dfs-green Tier1 Water Bottle - Green

    EcoFriendly Water Bottle: Green FunBottle

    $4.29
    MSRP: $12.99
    Save 67%
  • KPPS Klean Kanteen Sport Cap 2.0
  • KSSF Klean Kanteen Stainless Steel Flat Cap
  • KSSL Klean Kanteen Stainless Steel Loop Cap
  • KPPL Klean Kanteen Loop Cap
  • 8014399 Katadyn Quick Fill Hydration Pack Adapter

    8014399 Katadyn Quick Fill Hydration Pack Adapter

    $7.95
    MSRP: $11.44
    Save 31%
  • KWPPC Klean Kanteen Cafe Cap

    KWPPC Klean Kanteen Cafe Cap

    $8.29
    MSRP: $11.99
    Save 31%
  • BBY-1TT-BLU Built NY Thirsty Bottle Tote - Blue
  • 57-1423 Nubo Bottle Filtered Water Bottle

    Nubo Filtered Water Bottle (18 oz., Model #57-1423)

    $9.59
    MSRP: $15.99
    Save 40%
  • Brita Water Purifier Bottle Replacement Filter (2-Pack)
  • PX05-4-78 Purtrex Replacement Filter Cartridge

    PX05-4-78 Purtrex Replacement Water Filter Cartridge

    $2.99
    MSRP: $5.74
    Save 48%
  • W2160901 Doulton Candle Mount O-ring

    W2160901 Doulton Ceramic Water Filter Candle O-Ring

    $3.99
    MSRP: $5.74
    Save 30%
  • PS1-10C Pentek Whole House Replacement Sediment Filter Cartridge
  • FPMB20-978 Watts Flo-Pro Replacement Filter Cartridge

    FPMB20-978 Watts Flo-Pro Replacement Water Filter

    $3.99
    MSRP: $5.16
    Save 23%
  • P10-5 Tier1 Polypropylene Sediment Filter

    P10-5 Tier1 Polypropylene Sediment Filter

    $3.99
    MSRP: $5.74
    Save 30%
  • AP1001 3M Aqua-Pure Comparable Whole House Sediment Water Filter by Tier1
  • AP-GRMB-01PP-10UB 3M Aqua-Pure Comparable Whole House Sediment Water Filter by Tier1
  • GX01-9-78 Hytrex Comparable Whole House Sediment Water Filter by Tier1
  • PX10-9-78 Purtrex Replacement Filter Cartridge

    PX10-9-78 Purtrex Replacement Water Filter

    $4.05
    MSRP: $8.04
    Save 50%
  • 74-985001 3M Aqua-Pure Male Connection

    74-985001 3M Aqua-Pure Quick-Connect Male Connection

    $4.09
    MSRP: $9.99
    Save 59%
  • KE25G1S Pentek Polyester Felt Bag Filter

    KE25G1S Pentek Polyester Felt Filter Bag

    $4.09
    MSRP: $7.00
    Save 42%
  • PX20-9-78 Purtrex Replacement Filter Cartridge

    PX20-9-78 Purtrex Water Filter Cartridge

    $4.09
    MSRP: $9.99
    Save 59%
  • PX30-9-78 Purtrex Replacement Filter Cartridge

    PX30-9-78 Purtrex Replacement Water Filter Cartridge

    $4.09
    MSRP: $9.99
    Save 59%
  • SDC-25-1020 Hydronix Whole House Replacement Sediment Filter Cartridge
  • KO5G3S Pentek Polypropylene Bag Filter

    KO5G3S Pentek Polypropylene Filter Bags

    $4.99
    MSRP: $7.00
    Save 29%
  • PX05-20 Purtrex Replacement Water Filter

    PX05-20 Purtrex Replacement Water Filter

    $4.99
    MSRP: $9.19
    Save 46%
  • PX20-20 Purtrex Replacement Filter Cartridge

    PX20-20 Purtrex Replacement Water Filter

    $4.99
    MSRP: $8.04
    Save 38%
  • PX75-20 Purtrex Replacement Filter Cartridge

    PX75-20 Purtrex Replacement Water Filter Cartridge

    $4.99
    MSRP: $8.04
    Save 38%
  • FPMB5-978 Watts Flo-Pro Replacement Filter Cartridge

    FPMB5-978 Watts Flo-Pro Water Filter Cartridge

    $4.99
    MSRP: $5.16
    Save 3%
  • BP-410-1 Pentek Polypropylene Bag Filter

    BP-410-1 Pentek Polypropylene Bag Filter

    $4.99
    MSRP: $7.00
    Save 29%
  • BP-410-25 Pentek Polypropylene Bag Filter

    BP-410-25 Pentek Polypropylene Bag Filter

    $4.99
    MSRP: $7.00
    Save 29%
  • BP-410-5 Pentek Polypropylene Bag Filter

    BP-410-5 Pentek Polypropylene Bag Filter

    $4.99
    MSRP: $7.00
    Save 29%
  • BP-420-10 Pentek Polypropylene Bag Filter

    BP-420-10 Pentek Polypropylene Bag Filter

    $4.99
    MSRP: $8.15
    Save 39%
  • BP-420-200 Pentek Polypropylene Bag Filter

    BP-420-200 Pentek Polypropylene Bag Filter

    $4.99
    MSRP: $7.00
    Save 29%
  • BP-420-25 Pentek Polypropylene Bag Filter

    BP-420-25 Pentek Polypropylene Bag Filter

    $4.99
    MSRP: $7.00
    Save 29%
  • BP-420-50 Pentek Polypropylene Bag Filter

    BP-420-50 Pentek Polypropylene Bag Filter

    $4.99
    MSRP: $8.15
    Save 39%
  • SDC-25-1010 Hydronix Sediment Water Filter Cartridge

    SDC-25-1010 Hydronix Sediment Water Filter Cartridge

    $4.99
    MSRP: $6.89
    Save 28%
  • SDC-25-0505 Hydronix Sediment Water Filter Cartridge

    SDC-25-0505 Hydronix Sediment Water Filter Cartridge

    $4.99
    MSRP: $6.89
    Save 28%
  • SDC-25-0510 Hydronix Sediment Water Filter Cartridge

    SDC-25-0510 Hydronix Sediment Water Filter Cartridge

    $4.99
    MSRP: $8.34
    Save 40%
  • P1-5 Tier1 Sediment Filter Cartridge

    P1-5 Tier1 Sediment Filter Cartridge

    $4.99
    MSRP: $8.34
    Save 40%
  • GX75-9-78 Hytrex Replacement Filter Cartridge

    GX75-9-78 Hytrex Water Filter Cartridge

    $5.05
    MSRP: $8.61
    Save 41%

Items 1 to 48 of 310 total

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