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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  • WFFMC303X DuPont Faucet Mount Replacement Cartridges - Ultra Protection Filter (3-pack)
  • R200 Samsung Inline Water Filter Replacement by Tier1

    R200 OmniFilter Inline Water Filter Replacement by Tier1

    $6.99 MSRP: $10.34
    Save 32%
  • AP717 3m Aqua-Pure Comparable Inline Water Filter by Tier1

    AP717 3M Aqua-Pure Comparable Inline Water Filter by Tier1

    $6.99 MSRP: $10.34
    Save 32%
  • CL10ROT33-B Omnipure Comparable Inline Water Filter by Tier1
  • WHKF-IMTO Whirlpool Comparable Inline Water Filter by Tier1

    WHKF-IMTO Whirlpool Comparable Inline Water Filter by Tier1

    $6.99 MSRP: $10.34
    Save 32%
  • ICF-10Q Hydronix Comparable Inline Water Filter by Tier1

    ICF-10Q Hydronix Comparable Inline Water Filter by Tier1

    $6.99 MSRP: $10.34
    Save 32%
  • K2333-JJ Omnipure Comparable Inline Water Filter by Tier1

    K2333-JJ Omnipure Comparable Inline Water Filter by Tier1

    $6.99 MSRP: $10.34
    Save 32%
  • K2540-JJ Omnipure Comparable Inline Water Filter by Tier1
  • DD-7098 Daewoo Comparable Inline Water Filter by Tier1

    DD-7098 Daewoo Comparable Inline Water Filter by Tier1

    $6.99 MSRP: $10.34
    Save 32%
  • K2533BB Omnipure Comparable Inline Water Filter by Tier1

    K2533BB Omnipure Comparable Inline Water Filter by Tier1

    $6.99 MSRP: $10.34
    Save 32%
  • K5567JJ Omnipure Comparable Inline Water Filter by Tier1

    K5567JJ Omnipure Comparable Inline Water Filter by Tier1

    $6.99 MSRP: $10.34
    Save 32%
  • CL10ROT33-C-Omnipure Comparable Inline Water Filter by Tier1
  • GS-10ALS-JG14 Pentek Comparable Inline Water Filter by Tier1
  • CL10ROT40-B Omnipure Comparable Inline Water Filter by Tier1
  • AICRO-JGK Watts Comparable Inline Water Filter by Tier1

    AICRO-JGK Watts Comparable Inline Water Filter by Tier1

    $6.99 MSRP: $10.34
    Save 32%
  • K2528-JJ Omnipure Comparable Inline Water Filter by Tier1
  • K2567-BB Omnipure Comparable Inline Water Filter by Tier1

    K2567-BB Omnipure Comparable Inline Water Filter by Tier1

    $6.99 MSRP: $10.34
    Save 32%
  • CL10ROT40-C Omnipure Comparable Inline Water Filter by Tier1
  • K5586-JJ Omnipure Comparable Inline Water Filter by Tier1

    K5586-JJ Omnipure Comparable Inline Water Filter by Tier1

    $6.99 MSRP: $10.34
    Save 32%
  • GS-10-JG14 Pentek Comparable Inline Water Filter by Tier1

    GS-10-JG14 Pentek Comparable Inline Water Filter by Tier1

    $6.99 MSRP: $10.34
    Save 32%
  • K5528-BB Omnipure Comparable Inline Water Filter by Tier1

    K5528-BB Omnipure Comparable Inline Water Filter by Tier1

    $6.99 MSRP: $10.34
    Save 32%
  • CL10ROT28-A Omnipure Comparable Inline Water Filter by Tier1
  • K2533TJ Omnipure Comparable Inline Water Filter by Tier1

    K2533TJ Omnipure Comparable Inline Water Filter by Tier1

    $6.99 MSRP: $10.34
    Save 32%
  • WS-21 Water Sentinel Comparable Inline Water Filter by Tier1
  • K2540-TJ Omnipure Comparable Inline Water Filter by Tier1
  • K5553-BB Omnipure Comparable Inline Water Filter by Tier1

    K5553-BB Omnipure Comparable Inline Water Filter by Tier1

    $6.99 MSRP: $10.34
    Save 32%
  • K5686-BB Omnipure Comparable Inline Water Filter by Tier1
  • K2328-JJ Omnipure Comparable Inline Water Filter by Tier1

    K2328-JJ Omnipure Comparable Inline Water Filter by Tier1

    $6.99 MSRP: $10.34
    Save 32%
  • F5-WHITE Instapure Complete Faucet Filter System - White

    F5-WHITE Instapure Complete Faucet Filter System - White

    $18.19
    MSRP: $28.99
    Save 37%
  • WQCCC11 Watts Kwik-Change Pre-Carbon Water Filter Cartridge

    WQCCC11 Watts Kwik-Change Pre-Carbon Water Filter Cartridge

    $17.99
    MSRP: $25.29
    Save 29%
  • WQCHFC11 Watts Kwik-Change Hollow Fiber (UF) Water Filter Cartridge
  • WQCSC11 Watts Kwik-Change Sediment Filter Cartridge

    WQCSC11 Watts Kwik-Change Sediment Filter Cartridge

    $11.99
    MSRP: $16.09
    Save 25%
  • K2386-JJ Omnipure Inline Phosphate Water Filter

    K2386-JJ Omnipure Inline Phosphate Water Filter

    $10.05
    MSRP: $17.24
    Save 42%
  • WSK-1 Water Sentinel Replacement Water Filters (2-Pack)
  • TFM-36-EB Desal Reverse Osmosis Membrane

    TFM-36-EB Desal Reverse Osmosis Membrane

    $56.09
    MSRP: $94.99
    Save 41%
  • TFM-18-EB Desal Reverse Osmosis Membrane

    TFM-18-EB Desal Reverse Osmosis Membrane

    $63.29
    MSRP: $81.99
    Save 23%
  • TQ56-15FC PuROTwist Reverse Osmosis Membrane

    TQ56-15FC PuROTwist Reverse Osmosis Membrane

    $68.69
    MSRP: $89.99
    Save 24%
  • WHCF-R-PLUS Whirlpool Inline UltraEase Plus Water Filter
  • E5520-K Omnipure Water Filter

    E5520-K Omnipure Water Filter

    $19.79
    MSRP: $25.99
    Save 24%
  • E5722-P Omnipure Carbon Block Water Filter

    E5722-P Omnipure Carbon Block Water Filter

    $33.99
    MSRP: $49.99
    Save 32%
  • US-UF3 Culligan Ultrafiltration Drinking Water System
  • FM-25R Culligan Replacement Faucet Filter

    FM-25R Culligan Replacement Faucet Filter

    $13.89
    MSRP: $21.99
    Save 37%
  • US-UF3R Culligan Ultrafiltration Replacement Water Filter Cartridge Set
  • H2O+ Brondell Cypress Countertop Water Filtration System (#H630)
  • CQE-CT-00132 Crystal Quest Countertop Fluoride Water Filter: Double Fluoride PLUS

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