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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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  • CW-50 Pentek Comparable Whole House Sediment Water Filter by Tier1
  • R50-BB Pentek Comparable Whole House Sediment Water Filter by Tier1
  • AP-GRMB-10PP-10UB Whole House Water Filter Replacement Cartridge
  • AP-GRMB-20PP-10UB Whole House Water Filter Cartridge by 3M Aqua-Pure
  • Pentek S1-BB Replacement Water Filter Cartridge

    S1-BB Pentek Replacement Filter Cartridge

    As Low As $5.40 Per Filter

  • 3M Aqua-Pure AP-GRMB-50PP-10UB
  • W5W American Plumber Whole House Sediment Filter Cartridge (2-Pack)
  • 3M Aqua-Pure AP1001 Whole House Water Filter Cartridge
  • 3M Aqua-Pure AP1003 Water Filter Replacement Cartridge (2-Pack)
  • 3M Aqua-Pure AP110 Whole House Water Filter Cartridge
  • AP111 3M Aqua-Pure Whole House Filter Replacement Cartridge
  • 3M Aqua-Pure AP111-2 Whole House Water Filter
  • 3M Aqua-Pure AP124 Whole House Water Filter Cartridge
  • 3M Aqua-Pure AP410 Water Filter Cartridges

    AP410 3M Aqua-Pure Water Filter Cartridge Set (2-Pack)

    $64.99 Retail Price:  $71.29
  • 3M Aqua-Pure AP420 Water Filter Replacement Cartridge
  • 3M Aqua-Pure AP430SS Water Heater Scale Inhibitor

    AP430SS 3M Aqua-Pure Water Heater Scale Inhibitor System

    $70.99 Retail Price:  $90.84
  • 3M Aqua-Pure AP815 Whole House Water Filter
  • PS1-10C Pentek Whole House Replacement Sediment Filter Cartridge
  • PS20-10C Pentek Whole House Replacement Sediment Filter Cartridge
  • 3M Aqua-Pure AP11T Whole House Water Filter

    AP11T 3M Aqua-Pure Whole House Water Filtration System

    $79.99 Retail Price:  $94.29
  • AP-GRMB-01PP-10UB Whole House Replacement Cartridge by 3M Aqua-Pure

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