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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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  • ECP1-10 Pentek Replacement Filter Cartridge (30-Pack)
  • ECP5-20 Pentek Replacement Filter Cartridge (20-Pack)
  • DGD-2501 Pentek Whole House Filter Replacement Cartridge (20-Pack)
  • DGD-5005 Pentek Whole House Filter Replacement Cartridge (20-Pack)
  • ECP20-20 Pentek Replacement Filter Cartridge (20-Pack)
  • DGD-7525 Pentek Whole House Replacement Sediment Filter (20-Pack)
  • ECP5-BB Pentek Whole House Filter Replacement Cartridge (20-Pack)
  • 3M Aqua-Pure AP902 Whole House Water Filter

    AP902 3M Aqua-Pure Whole House Water Filtration System

    $204.99
    MSRP: $238.04
    Save 14%
  • ST-2 Pentek Filter Housing - Stainless Steel

    ST-2 Pentek Filter Housing - Stainless Steel

    $226.99
    MSRP: $286.57
    Save 21%
  • TW30-4021 Filmtec Commercial Reverse Osmosis Membrane

    TW30-4021 Filmtec Commercial Reverse Osmosis Membrane

    $249.99
    MSRP: $289.79
    Save 14%
  • BW30-4040 Filmtec Brackish Water Industrial Reverse Osmosis Membrane
  • 3M Aqua-Pure AP2150  Water Filter
  • TW30-4040 Filmtec Commercial Reverse Osmosis Membrane

    TW30-4040 Filmtec Commercial Reverse Osmosis Membrane

    $275.99
    MSRP: $312.79
    Save 12%
  • XLE-4040 Filmtec Extra Low Energy Commercial Reverse Osmosis Membrane

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