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

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  • 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.

Items 97 to 144 of 474 total

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  • Pentek ECP20-BB Replacement Water Filter Cartridge

    ECP20-BB Pentek Replacement Filter Cartridge

    As Low As $12.00 Per Filter

  • ECP5-20BB Pentek Whole House Filter Cartridge
  • ECP5-BB Pentek Whole House Water Filter

    ECP5-BB Pentek Whole House Filter Replacement Cartridge

    As Low As $10.20 Per Filter

  • Pentek ECP50-20BB Replacement Water Filter Cartridge

    ECP50-20BB Pentek Replacement Filter Cartridge

    As Low As $22.67 Per Filter

  • Pentek ECP50-BB Whole House Water Filter Replacement Cartridge
  • Pentek EP-10 Replacement Water Filter Cartridge

    EP-10 Pentek Replacement Filter Cartridge

    As Low As $7.80 Per Filter

  • Pentek EP-20 Replacement Water Filter Cartridge

    EP-20 Pentek Replacement Filter Cartridge

    As Low As $15.50 Per Filter

  • EP-20BB Pentek Replacement Water Filter

    EP-20BB Pentek Replacement Filter Cartridge

    As Low As $40.50 Per Filter

  • EP-BB Pentek Replacement Filter Cartridge

    EP-BB Pentek Replacement Filter Cartridge

    As Low As $22.00 Per Filter

  • EPM-20 Pentek Whole House Water Filter

    EPM-20 Pentek Whole House Filter Replacement Cartridge

    As Low As $12.00 Per Filter

  • EPM-20BB Pentek Whole House Filter Cartridge
  • Pentek EPM-BB Replacement Water Filter Cartridge

    EPM-BB Pentek Replacement Filter Cartridge

    As Low As $23.00 Per Filter

  • GAC20-BB Pentek Whole House Water Filter
  • Pentek NCP-20 Whole House Water Filter Replacement Cartridge

    NCP-20 Pentek Whole House Filter Replacement Cartridge

    As Low As $13.00 Per Filter

  • NCP-20BB Pentek Whole House Filter Replacement
  • NCP-BB Pentek Whole House Water Filter

    NCP-BB Pentek Whole House Filter Replacement Cartridge

    As Low As $32.00 Per Filter

  • Pentek P1-20 Whole House Water Filter Replacement Cartridge

    P1-20 Pentek Whole House Filter Replacement Cartridge

    As Low As $9.75 Per Filter

  • EP10-10 Tier1 Carbon Block Water Filter

    EP10-10 Tier1 Carbon Block Water Filter

    As Low As $5.20 Per Filter

  • EP5-10 Tier1 Carbon Block Water Filter

    EP5-10 Tier1 Carbon Block Water Filter

    As Low As $3.82 Per Filter

  • EPM-BB Pentek Comparable Carbon Whole House Water Filter
  • P1 Pentek 10 x 2.5-inch Whole House Sediment Water Filter Replacement
  • DGD-2501 Pentek Comparable Whole House Filter by Tier1
  • P5-10 Tier1 Sediment Water Filter

    P5-10 Tier1 Sediment Water Filter

    As Low As $3.00 Per Filter

  • P5-10BB Tier1 Sediment Water Filter

    P5-10BB Tier1 Sediment Water Filter

    As Low As $7.75 Per Filter

  • P5-20 Tier1 Sediment Water Filter

    P5-20 Tier1 Whole House Sediment Water Filter

    As Low As $4.48 Per Filter

  • P5-20BB Tier1 Sediment Water Filter

    P5-20BB Tier1 Whole House Sediment Water Filter

    As Low As $11.70 Per Filter

  • R30BB Pentek Comparable Whole House Water Filter by Tier1
  • Pentek P1 Polyproplyene Water Filter (10 x 2 1/2)

    P1 Pentek Whole House Filter Replacement Cartridge

    As Low As $5.60 Per Filter

  • Pentek S1 Pleated Whole House Sediment Filter
  • Pentek WP25BB97P Whole House Water Filter Replacement Cartridge
  • Pentek WP5BB97P Replacement Water Filter Cartridge

    WP5BB97P Pentek Replacement Filter Cartridge

    As Low As $17.50 Per Filter

  • Pentek WPX25BB97P Whole House Water Filter Replacement Cartridge
  • Pentek WS-10 Water Softening Water Filter

    WS-10 Pentek Water Softening Filter

    As Low As $19.66 Per Filter

  • PX05-9-78 Purtrex Replacement Water Filter

    PX05-9-78 Purtrex Replacement Water Filter

    As Low As $4.56 Per Filter

  • The Pentek C1 comparable Whole House Carbon Water Filter by Tier1
  • EP5-10BB Tier1 Carbon Block Water Filter

    EP5-10BB Tier1 Carbon Block Water Filter

    As Low As $15.60 Per Filter

  • EP5-20 Tier1 Carbon Block Water Filter

    EP5-20 Tier1 Carbon Block Water Filter

    As Low As $11.04 Per Filter

  • P20 Pentek 10 x 2.5-inch Comparable Whole House Sediment Water Filter
  • SDC-45-1020 Hydronix Comparable Sediment Water Filter by Tier1
  • P20-20 Tier1 Sediment Water Filter

    P20-20 Tier1 Sediment Water Filter

    As Low As $5.24 Per Filter

  • Tier1 P20-20BB Whole House Replacement Sediment Filter Cartridge
  • P5-478 Pentek Sediment Water Filter
  • Pentek C1-20 Carbon Water Filter Replacement Cartridge

    C1-20 Pentek Replacement Filter Cartridge

    As Low As $10.80 Per Filter

  • CBC-10 Pentek Replacement Water Filter
  • Pentek S1-BB Replacement Water Filter Cartridge

    S1-BB Pentek Replacement Filter Cartridge

    As Low As $5.40 Per Filter

Items 97 to 144 of 474 total

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