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

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No Worries...
  • 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.

37 Item(s)

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  • K5520SS Omnipure Inline GAC Filter Cartridge

    K5520SS Omnipure Inline GAC Water Filter Cartridge

    $19.05
    MSRP: $27.59
    Save 31%
  • Pentek 255579-43 Inline Sediment Water Filter Replacement

    Pentek 255579-43 Inline Sediment Water Filter Replacement

    $12.99
    MSRP: $19.99
    Save 35%
  • K2528-KK Omnipure GAC Inline Water Filter

    K2528-KK Omnipure GAC Inline Water Filter

    $11.99
    MSRP: $17.99
    Save 33%
  • WIC-6A American Plumber Inline Icemaker Filter

    WIC-6A American Plumber Inline Icemaker Filter

    $13.99
    MSRP: $14.94
    Save 6%
  • WICA American Plumber Inline Filter with 1/4 inch Quick-Connect Fittings
  • WICSA American Plumber Inline Filter with 1/4 inch Quick-Connect Fittings
  • IC-100A Culligan Level 1 Disposable Inline Filter

    IC-100A Culligan Level 1 Disposable Inline Filter

    $12.99
    MSRP: $16.78
    Save 23%
  • RC-EZ-1 Culligan Level 1 Easy-Change Inline Filter Replacement Cartridge
  • GS-10RO-H-38 Desal Reverse Osmosis Carbon Post Filter

    GS-10RO-H-38 Desal Reverse Osmosis Carbon Post Filter

    $17.99
    MSRP: $20.69
    Save 13%
  • GXRTDR GE SmartWater Inline Filter Cartridge

    GXRTDR GE SmartWater Inline Filter Cartridge

    $18.99
    MSRP: $24.19
    Save 21%
  • GS-10-JG14 Pentek Inline Filter System

    GS-10-JG14 Pentek Inline Water Filtration System

    $12.99
    MSRP: $15.28
    Save 15%
  • GS-10ALS-JG14 Pentek Inline Filter System

    GS-10ALS-JG14 Pentek Inline Water Filter

    $13.39
    MSRP: $17.70
    Save 24%
  • R200 OmniFilter Inline Filter System

    R200 OmniFilter Inline Water Filtration System

    $14.99
    MSRP: $16.09
    Save 7%
  • WHKF-IMTO Whirlpool Inline Filter

    WHKF-IMTO Whirlpool Inline Filter

    $11.99
    MSRP: $14.94
    Save 20%
  • ELF-NV-HEAD-DK7-P6 Omnipure Inline Filter Head

    ELF-NV-HEAD-DK7-P6 Omnipure Inline Water Filter Head

    $11.05
    MSRP: $17.24
    Save 36%
  • K2333-JJ Omnipure Inline Filter

    K2333-JJ Omnipure Inline Filter

    $10.99
    MSRP: $13.79
    Save 20%
  • K2333-KK Omnipure Inline Filter

    K2333-KK Omnipure Inline Filter

    $12.99
    MSRP: $13.79
    Save 6%
  • K2505-JJ Omnipure Sediment Inline Filter

    K2505-JJ Omnipure Sediment Inline Filter

    $12.99
    MSRP: $16.09
    Save 19%
  • K2515-JJ Omnipure Lead Cyst Inline Filter

    K2515-JJ Omnipure Lead Cyst Inline Filter

    $19.99
    MSRP: $25.29
    Save 21%
  • K2520-JJ Omnipure Inline Filter

    K2520-JJ Omnipure Inline Filter

    $18.99
    MSRP: $24.14
    Save 21%
  • K2533JJ Omnipure Water Filter

    K2533JJ Omnipure Water Filter

    $11.99
    MSRP: $13.79
    Save 13%
  • K2533-KK Omnipure Inline Filter

    K2533-KK Omnipure Inline Filter

    $13.99
    MSRP: $14.94
    Save 6%
  • K2540-JJ Omnipure Inline Coconut Carbon Filter

    K2540-JJ Omnipure Inline Coconut Carbon Filter

    $11.99
    MSRP: $16.09
    Save 25%
  • K5505JJ Omnipure Sediment Filter Cartridge

    K5505JJ Omnipure Sediment Filter Cartridge

    $15.99
    MSRP: $21.84
    Save 27%
  • K5520P-JJ Omnipure Inline Phosphate Filter

    K5520P-JJ Omnipure Inline Phosphate Filter

    $19.99
    MSRP: $27.59
    Save 28%
  • K5586-JJ Omnipure Inline Phosphate Filter

    K5586-JJ Omnipure Inline Phosphate Filter

    $14.99
    MSRP: $19.54
    Save 23%
  • K5605-JJ Omnipure Sediment Inline Filter

    K5605-JJ Omnipure Sediment Inline Filter

    $13.99
    MSRP: $18.39
    Save 24%
  • K5633JJ Omnipure Inline GAC Filter Cartridge

    K5633JJ Omnipure Inline GAC Filter Cartridge

    $14.39
    MSRP: $18.85
    Save 24%
  • K5633KK Omnipure Inline GAC Filter Cartridge

    K5633KK Omnipure Inline Water Filter Cartridge

    $14.39
    MSRP: $18.85
    Save 24%
  • Q5386 Omnipure Inline Filter Replacement Cartridge

    Q5386 Omnipure Inline Filter Replacement Cartridge

    $14.99
    MSRP: $20.00
    Save 25%
  • Q5486 Omnipure Twist-Tap Inline Filter Replacement Cartridge
  • VH14-JG Omnipure Valved Head

    VH14-JG Omnipure Valved Head

    $19.99
    MSRP: $25.29
    Save 21%
  • K2586-JJ GAC Omnipure Phosphate Inline Water Filter

    K2586-JJ GAC Omnipure Phosphate Inline Water Filter

    $16.99
    MSRP: $21.84
    Save 22%
  • K2305-KK Omnipure Inline Sediment Filters

    K2305-KK Omnipure Inline Sediment Filters

    $11.99
    MSRP: $24.14
    Save 50%
  • K2385 Omnipure Phosphate Inline Filter

    K2385 Omnipure Phosphate Inline Filter

    $17.99
    MSRP: $24.14
    Save 25%
  • GXRTQR GE Smart Water In-Line Comparable Replacement Cartridge by Tier1
  • GXRTQR GE SmartWater Inline Filter Replacement Cartridge

    GXRTQR GE SmartWater Inline Filter Replacement Cartridge

    $19.99 MSRP: $34.99
    Save 43%

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