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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.

Items 1 to 48 of 53 total

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  • P5-20BB Tier1 Whole House Sediment Water Filter (2-Pack)
  • Hydronix SDC-25-1005 6-Pack Whole House Replacement Sediment Filter Cartridge
  • ECP5-20 Pentek Replacement Filter Cartridge (20-Pack)
  • ECP5-20 Pentek Replacement Filter Cartridge (6-Pack)
  • KX Matrikx CTO2-12 Reverse Osmosis Carbon Block Replacement Filter
  • Pentek EP-10 Replacement Water Filter Cartridge

    Pentek EP-10 Filter Cartridge Replacement

    $11.99 MSRP: $15.34
    Save 22%
  • Pentek EP-20 Replacement Water Filter Cartridge

    Pentek EP-20 Water Filter Cartridge Replacements

    $17.99 MSRP: $20.00
    Save 10%
  • EP-20BB Pentek Replacement Water Filter

    EP-20BB Pentek Replacement Filter Cartridge

    $47.99 MSRP: $62.83
    Save 24%
  • EP-BB Pentek Replacement Filter Cartridge

    EP-BB Pentek Replacement Filter Cartridge

    $27.99 MSRP: $32.32
    Save 13%
  • EP5-10 Tier1 Carbon Block Water Filter

    EP5-10 Tier1 Carbon Block Water Filter

    $8.49 MSRP: $11.49
    Save 26%
  • P5-20 Tier1 Sediment Water Filter

    P5-20 Tier1 Whole House Sediment Water Filter

    $4.99 MSRP: $9.19
    Save 46%
  • P5-20BB Tier1 Sediment Water Filter

    P5-20BB Tier1 Whole House Sediment Water Filter

    $12.97 MSRP: $25.76
    Save 50%
  • Pentek WP5BB97P Replacement Water Filter Cartridge
  • PX05-9-78 Purtrex Replacement Water Filter

    PX05-9-78 Purtrex Replacement Water Filter

    $5.79 MSRP: $8.04
    Save 28%
  • EP5-10BB Tier1 Carbon Block Water Filter

    EP5-10BB Tier1 Carbon Block Water Filter

    $22.99 MSRP: $26.34
    Save 13%
  • Pentek C1-20 Carbon Water Filter Replacement Cartridge

    Pentek C1-20 Water Filter Cartridge Replacements

    $16.99 MSRP: $20.00
    Save 15%
  • ECP5-BB Pentek Comparable Whole House Sediment Water Filter by Tier1
  • CP5-BBS-D Culligan Comparable Whole House Water Filter by Tier1
  • EP5-20BB Tier1 Carbon Block Water Filter

    EP5-20BB Tier1 Carbon Block Water Filter

    $37.99 MSRP: $62.09
    Save 39%
  • EP-5 Pentek Replacement Filter Cartridge
  • RWC-5 American Plumber Undersink Filter Replacement Cartridge
  • W5CIP American Plumber Undersink Filter Replacement Cartridge (2-Pack)
  • W5P American Plumber Whole House Sediment Filter Cartridge (2-Pack)
  • W5W American Plumber Whole House Sediment Filter Cartridge (2-Pack)
  • WPD-110 American Plumber Whole House Sediment Filter Cartridge (2-Pack)
  • C-2 Culligan RV Filter Replacement Cartridge (2-Pack)
  • CP5-BBS-D Culligan Level 4 Whole House Filter Replacement Cartridge
  • D-10-TWIN Culligan Level 1 Undersink Filter Replacement Cartridge (2-Pack)
  • D-15 Culligan Level 1 Undersink Filter Replacement Cartridge (2-Pack)
  • IC-EZ-1 Culligan Level 1 Easy-Change Inline Filter System
  • NCP-10 Culligan Whole House Filter Replacement Cartridge
  • P1012581 Culligan Undersink Replacement Filter Cartridge
  • P5-D Culligan Level 4 Whole House Filter Replacement Cartridge (2-Pack)
  • RC-EZ-1 Culligan Level 1 Easy-Change Inline Filter Replacement Cartridge
  • RVF-10 Culligan RV Pre-Tank Exterior Filter

    RVF-10 Culligan RV Pre-Tank Exterior Filter

    $34.99
    MSRP: $38.51
    Save 9%
  • RWC-5 Culligan Level 1 Undersink Filter Replacement Cartridge
  • US-EZ-1 Culligan Level 1 Easy-Change Undersink Filter System
  • HDG-SED-ACS Hydronix Replacement Filter Cartridge

    HDG-SED-ACS Hydronix Replacement Filter Cartridge

    $5.99
    MSRP: $8.04
    Save 25%
  • SDC-25-1005 Hydronix Whole House Replacement Sediment Filter Cartridge
  • PD-5-30 Pentek Whole House Replacement Sediment Filter Cartridge

    PD-5-30 Pentek Whole House Sediment Filter Cartridge

    $15.99
    MSRP: $16.55
    Save 3%
  • PD-5-40 Pentek Whole House Replacement Sediment Filter Cartridge

    PD-5-40 Pentek Whole House Sediment Filter Cartridge

    $18.99
    MSRP: $24.34
    Save 22%
  • WP-5 Pentek Replacement Filter Cartridge

    WP-5 Pentek Replacement Filter Cartridge

    $6.99
    MSRP: $8.84
    Save 21%
  • WP5BB20P Pentek Replacement Filter Cartridge

    WP5BB20P Pentek Replacement Filter Cartridge

    $34.99
    MSRP: $42.54
    Save 18%
  • CEP-10E Pentek Replacement Filter Cartridge

    CEP-10E Pentek Replacement Filter Cartridge

    $12.99
    MSRP: $16.34
    Save 21%
  • CFB-Plus10 Pentek Replacement Filter Cartridge

    CFB-Plus10 Pentek Replacement Water Filter Cartridge

    $9.99
    MSRP: $14.13
    Save 29%

Items 1 to 48 of 53 total

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