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When we protect your filter purchase with our No Worries Guarantee, we mean it!

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!

Learn more about our No Worries Guarantee

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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  • P195BN Cuno Water Filter Cartridge

    P195BN 3M Cuno Water Filter Cartridge

    MSRP: $237.99
    Save 26%
  • DuPont WFRO60X Quick Twist Reverse Osmosis System
  • 8017764 Katadyn Microfilter System
  • K-202 Kohler Undersink Replacement Filter Cartridge

    K-202 Kohler Undersink Water Filter Cartridge

    MSRP: $173.40
    Save 25%
  • LSB4RC Lifesaver 4000UF Water Bottle Replacement Cartridge
  • 3M Aqua-Pure AP510 Water Filter System

    AP510 3M Aqua-Pure Water Filtration System

    MSRP: $146.04
    Save 3%
  • W9331028 Doulton SuperCarb Countertop Filter System

    W9331028 Doulton HCP SuperCarb Countertop Filter System

    MSRP: $174.79
    Save 16%
  • LSB6RC Lifesaver 6000UF Water Bottle Replacement Cartridge
  • US-1500 Pentek Undersink Filter System with Monitor

    US-1500 Pentek Undersink Filter System with Monitor

    MSRP: $195.37
    Save 15%
  • FM-1500-DWS Water Factory Systems Drinking Water Filtration System
  • 100186 Amway eSpring Replacement Filter Cartridge
  • W9330958 Doulton SuperCarb Undersink Ceramic Candle Filter System
  • EV4339-12 Everpure Claris L Replacement Hot Water Filter Cartridge

    EV4339-12 Everpure Claris L Hot Water Filter Cartridge

    MSRP: $205.84
    Save 5%
  • LSB4 Lifesaver 4000UF Water Bottle

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