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

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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18 Item(s)

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  • AP327 3M Aqua-Pure Water Filter Replacement Cartridge

    AP327 3M Aqua-Pure Undersink Filter Replacement Cartridge

    $37.49
    MSRP: $50.99
    Save 26%
  • AP117RO 3M Aqua-Pure Reverse Osmosis Filter

    3M Aqua-Pure AP117RO Reverse Osmosis Filter

    $25.39
    MSRP: $38.99
    Save 35%
  • 3M Aqua-Pure AP-250R Under Sink Water Filter
  • 3M Aqua-Pure AP317 Water Filter Replacement Cartridge

    AP317 3M Aqua-Pure Undersink Filter Replacement Cartridge

    $54.59
    MSRP: $78.99
    Save 31%
  • AP5527 3M Aqua-Pure Reverse Osmosis Pre and Post Filter Set
  • 3M Aqua-Pure AP717 Inline Water Filter

    AP717 3M Aqua-Pure Inline Filter System

    $25.99
    MSRP: $34.49
    Save 25%
  • AQUAPURE-APC77

    AQUAPURE-APC77

  • AQUAPURE-APC78

    AQUAPURE-APC78

  • AQUAPURE-AP-DW70

    AQUAPURE-AP-DW70

    $47.99
    MSRP: $56.34
    Save 15%
  • AQUAPURE-AP-DW85

    AQUAPURE-AP-DW85

    $56.59
  • AQUAPURE-APIL3R

    AQUAPURE-APIL3R

  • AQUAPURE-C-COMPLETE

    AQUAPURE-C-COMPLETE

    $69.09
    MSRP: $88.54
    Save 22%
  • AQUAPURE-C-CS-S

    AQUAPURE-C-CS-S

    $37.49
    MSRP: $42.54
    Save 12%
  • AQUAPURE-C-LC

    AQUAPURE-C-LC

    $50.99
    MSRP: $65.54
    Save 22%
  • AQUAPURE-EP15

    AQUAPURE-EP15

    $69.99
    MSRP: $82.79
    Save 15%
  • AQUAPURE-EP25

    AQUAPURE-EP25

    $91.99
    MSRP: $111.54
    Save 18%
  • AQUA-PURE-IL-IM-01

    AQUA-PURE-IL-IM-01

    $18.99
    MSRP: $24.14
    Save 21%
  • 7012333 Sub-Zero UC-15I Undercounter Icemaker Comparable Replacement Water Filter by Tier1

18 Item(s)

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