Discount Water Filters and Air Filters at Discount Filter Store.com

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, & Parts

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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Items 1 to 48 of 61 total

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  • C1-20 Pentek Comparable Whole House Water Filter by Tier1 (2-Pack)
  • C1-20 Pentek Comparable Whole House Water Filter by Tier1 (4-Pack)
  • Hydronix SDC-45-2005 Whole House Sediment Filter Cartridge
  • DGD-5005-20 Pentek Whole House Water Filter

    DGD-5005-20 Pentek Whole House Filter Replacement Cartridge

    $23.99 MSRP: $25.76
    Save 7%
  • ECP5-20BB Pentek Whole House Filter Cartridge
  • EP-20BB Pentek Replacement Water Filter
  • EP-BB Pentek Replacement Filter Cartridge

    EP-BB Pentek Replacement Filter Cartridge

    $27.99 MSRP: $32.32
    Save 13%
  • DGD-5005-20 Pentek Whole House Filter Replacement Cartridge by Tier1
  • RFFE20-BB Pentek Iron Reducing Water Filter Cartridge (20 in x 4.5 in)
  • Pentek WP5BB97P Replacement Water Filter Cartridge
  • EP5-10BB Tier1 Carbon Block Water Filter

    EP5-10BB Tier1 Carbon Block Water Filter

    $22.99 MSRP: $26.34
    Save 13%
  • ECP5-BB Pentek Comparable Whole House Sediment Water Filter by Tier1 (12-Pack)
  • ECP5-20BB Pentek Comparable Whole House Sediment Water Filter by Tier1 (25-Pack)
  • ECP5-20BB Pentek Comparable Whole House Sediment Water Filter by Tier1
  • EP-20BB Pentek Comparable Carbon Block Water Filter by Tier1

    EP-20BB Pentek Comparable Carbon Block Water Filter by Tier1

    $47.99 MSRP: $69.77
    Save 31%
  • ECP1-20BB Pentek Comparable Whole House Sediment Water Filter by Tier1
  • ECP5-20BB Pentek Comparable Whole House Sediment Water Filter by Tier1
  • CQE-RC-04034 Crystal Quest Comparable Whole House Sediment Water Filter by Tier1
  • HB-20-5W Harmsco Comparable Whole House Sediment Water Filter by Tier1
  • SPC-45-2005 Hydronix Comparable Whole House Sediment Water Filter by Tier1
  • SPC-45-2010 Hydronix Comparable Whole House Sediment Water Filter by Tier1
  • TO1DS OMNIFILTER Comparable Whole House Carbon Water Filter by Tier1 (2-Pack)
  • SWC-45-2005 Hydronix Comparable String-Wound Sediment Water Filter by Tier1
  • EP-BB Pentek Comparable Carbon Block Water Filter by Tier1

    EP-BB Pentek Comparable Carbon Block Water Filter by Tier1

    $22.99 MSRP: $26.34
    Save 13%
  • SWC-45-2005 Hydronix Comparable String-Wound Sediment Water Filter by Tier1
  • WP5BB20P Pentek Comparable String-Wound Sediment Water Filter by Tier1
  • MAXETW-FF20 Watts Comparable C-MAX Whole House Water Filter Cartridge by Tier1
  • CB-45-2010 Hydronix Comparable Replacement Filter Cartridge by Tier1
  • DBC-10EX2 Pentek Comparable Water Filter Cartridge Replacement by Tier1
  • Pentek CFB-Plus10BB Fiberdyne Carbon Filter

    Pentek CFB-Plus10BB Fiberdyne Carbon Filter

    $25.39
    MSRP: $32.99
    Save 23%
  • RWC-5 American Plumber Undersink Filter Replacement Cartridge
  • W5CIP American Plumber Undersink Filter Replacement Cartridge (2-Pack)
  • GS-215-CB5-B Pentek Inline Filter Replacement Cartridge
  • QC10-EPR Pentek Undersink Quick-Change Replacement Filter Cartridge
  • UDS-10EX1 Pentek Whole House Filter Replacement Cartridge
  • CFB-PLUS20BB Pentek Replacement Water Filter Cartridge

    CFB-PLUS20BB Pentek Replacement Water Filter Cartridge

    $45.39
    MSRP: $67.99
    Save 33%
  • EP-30 Pentek Replacement Filter Cartridge

    EP-30 Pentek Replacement Water Filter Cartridge

    $38.49
    MSRP: $67.99
    Save 43%
  • KDF55-10 Tier1 Water Filter

    KDF55-10 Tier1 Water Filter

    $23.99
    MSRP: $27.34
    Save 12%
  • KDF55-10BB Tier1 Water Filter
  • TIER1_P5_30_20_PACK
  • ECP5-BB Pentek Comparable Whole House Sediment Water Filter by Tier1 (50-Pack)
  • ECP5-20 Pentek Comparable Whole House Sediment Water Filter by Tier1 (50-Pack)

Items 1 to 48 of 61 total

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