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!

No Worries...
  • Your filters are guaranteed to be the right fit!
  • Our products are price match guaranteed!
  • Our customer service team is guaranteed to answer your call!
  • 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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Items 1 to 48 of 161 total

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  • WRC25HD20 American Plumber Whole House 20-inch Heavy Duty Filter Cartridge
  • 3M Aqua-Pure AP110-2 Whole House Water Filter Cartridge
  • 3M Aqua-Pure AP110-2C Whole House Water Filter Cartridge
  • 3M Aqua-Pure AP110-3 Whole House Water Filter

    AP110-3 3M Aqua-Pure Replacement Water Filter Cartridge

    $29.99
    MSRP: $34.49
    Save 13%
  • 3M Aqua-Pure AP430SS Water Heater Scale Inhibitor

    AP430SS 3M Aqua-Pure Water Heater Scale Inhibitor System

    $70.99
    MSRP: $90.84
    Save 22%
  • 3M Aqua-Pure AP810 Whole House Water Filter Cartridge

    3M Aqua-Pure AP810 Whole House Filter Replacement Cartridge

    $33.99
    MSRP: $46.64
    Save 27%
  • 3M Aqua-Pure AP810-2 Whole House Water Filter Cartridge
  • 3M Aqua-Pure AP811 Whole House Water Filter Cartridge

    AP811 3M Aqua-Pure Whole House Filter Replacement Cartridge

    $36.99
    MSRP: $43.69
    Save 15%
  • 3M Aqua-Pure AP811-2 Whole House Water Filter
  • 3M Aqua-Pure AP814 Whole House Water Filter
  • 3M Aqua-Pure AP814-2 Whole House Water Filter
  • 3M Aqua-Pure AP817 Whole House Water Filter Cartridge
  • 3M Aqua-Pure AP817-2 Whole House Water Filter Cartridge
  • EP15 3M Aqua-Pure Whole House Water Filter

    EP15 3M Aqua-Pure Whole House Water Filter Cartridge

    $69.99
    MSRP: $82.79
    Save 15%
  • EP25 3M Aqua-Pure Whole House Water Filter

    EP25 3M Aqua-Pure Whole House Water Filter Cartridge

    $91.99
    MSRP: $111.54
    Save 18%
  • GAC-20 Pentek Replacement Filter Cartridge

    GAC-20 Pentek Replacement Filter Cartridge

    $18.49
    MSRP: $29.99
    Save 38%
  • GAC-BB Pentek Replacement Filter Cartridge

    GAC-BB Pentek Replacement Filter Cartridge

    $26.99
    MSRP: $36.99
    Save 27%
  • WP-5BB97P Pentek Replacement Filter Cartridge

    WP-5BB97P Pentek Replacement Filter Cartridge

    $18.99
    MSRP: $24.99
    Save 24%
  • WP1BB97P Pentek Replacement Filter Cartridge
  • WPX100BB97P Pentek Replacement Filter Cartridge

    WPX100BB97P Pentek Replacement Filter Cartridge

    $18.99
    MSRP: $24.14
    Save 21%
  • WPX50BB97P Pentek Replacement Filter Cartridge

    WPX50BB97P Pentek Replacement Filter Cartridge

    $19.99
    MSRP: $24.14
    Save 17%
  • 3M Aqua-Pure AP11T Whole House Water Filter

    AP11T 3M Aqua-Pure Whole House Water Filtration System

    $79.99
    MSRP: $94.29
    Save 15%
  • CBC-BB Pentek Comparable Water Filter Cartridge by Tier1

    CBC-BB Pentek Comparable Water Filter Cartridge by Tier1

    $42.99
    MSRP: $60.59
    Save 29%
  • CBC-20 Pentek Comparable Water Filter Cartridge by Tier1

    CBC-20 Pentek Comparable Water Filter Cartridge by Tier1

    $25.99
    MSRP: $32.77
    Save 21%
  • FLOPLUS 20BB Comparable Water Filter Cartridge by Tier1

    CBC-20BB Pentek Replacement Filter Cartridge by Tier1

    $57.99
    MSRP: $136.99
    Save 58%
  • 3M Aqua-Pure AP124-2C Water Filter

    AP124-2C 3M Aqua-Pure Water Filter

    $26.99
    MSRP: $38.99
    Save 31%
  • AP-GRMB-01PP-20UB Whole House Replacement Water Filter by 3M Aqua-Pure
  • Pentek PS5-10C Whole House Replacement Sediment Water Filter Cartridge
  • CTO2-HD20 Hydronix Whole House Filter Replacement by Tier1

    CTO2-HD20 Hydronix Whole House Filter Replacement by Tier1

    $47.99 MSRP: $69.77
    Save 31%
  • MAXETW-FF20 Matrikx Whole House Filter Replacement by Tier1

    MAXETW-FF20 Matrikx Whole House Filter Replacement by Tier1

    $47.99 MSRP: $69.77
    Save 31%
  • C2-02 Viqua Comparable Carbon Whole House Filter by Tier1

    C2-02 Viqua Comparable Carbon Whole House Filter by Tier1

    $47.99 MSRP: $69.77
    Save 31%
  • WRC25HD American Plumber Whole House Heavy Duty Filter Cartridge
  • 3M Aqua-Pure AP810 Comparable Whole House Filter Replacement Cartridge by Tier1
  • W20CLA American Plumber Whole House Sediment Filter Cartridge (2-Pack)
  • W25P American Plumber Whole House Sediment Filter Cartridge (2-Pack)
  • W30PE American Plumber Whole House Sediment Filter Cartridge (2-Pack)
  • W50PE American Plumber Whole House Sediment Filter Cartridge (2-Pack)
  • W50W American Plumber Whole House Sediment Filter Cartridge (2-Pack)
  • 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)
  • 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

    3M Aqua-Pure AP110 Whole House Filter Replacement Cartridge

    $11.99
    MSRP: $18.14
    Save 34%

Items 1 to 48 of 161 total

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