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!
  • Our customer service team is guaranteed to answer your call!
  • 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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Items 1 to 48 of 65 total

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  • VIQUA-PRO30
  • Hydronix SDC-45-2001 Whole House Sediment Filter Cartridge
  • SDC-45-2010 Hydronix Water Filter Cartridge

    SDC-45-2010 Hydronix Sediment Water Filter Cartridge

    $21.99 MSRP: $31.73
    Save 31%
  • SDC-45-2020 Hydronix Sediment Water Filter

    SDC-45-2020 Hydronix Sediment Water Filter Cartridge

    $20.99 MSRP: $22.99
    Save 9%
  • SPC-45-2020 Hydronix Pleated Sediment Filter
  • DGD-2501-20 Pentek Whole House Sediment Filter
  • DGD-5005-20 Pentek Whole House Water Filter

    DGD-5005-20 Pentek Whole House Filter Replacement Cartridge

    $23.99 MSRP: $25.76
    Save 7%
  • DGD-7525-20 Pentek Whole House Water Filter
  • Pentek ECP1-20BB Replacement Water Filter Cartridge

    ECP1-20BB Pentek Replacement Filter Cartridge

    $26.99 MSRP: $28.39
    Save 5%
  • Pentek ECP20-20BB Replacement Water Filter Cartridge

    Pentek ECP20-20BB Pleated Sediment Water Filter Cartridge

    $24.99 MSRP: $28.39
    Save 12%
  • ECP5-20BB Pentek Whole House Filter Cartridge
  • Pentek ECP50-20BB Replacement Water Filter Cartridge
  • Pentek ECP50-BB Whole House Water Filter Replacement Cartridge
  • Pentek WP25BB97P Whole House Water Filter Replacement Cartridge
  • Pentek WP5BB97P Replacement Water Filter Cartridge
  • Pentek WPX25BB97P Whole House Water Filter Replacement Cartridge
  • 650730-006 Viqua LightWise Upgrade Kit for Pro 30 Systems

    650730-006 Viqua LightWise Upgrade Kit for Pro 30 Systems

    $655.99
    MSRP: $1,029.99
    Save 36%
  • 650653 Trojan UV Max UV System
  • W20CLHD20 American Plumber Whole House 20-inch Heavy Duty Filter Cartridge
  • W30PEHD American Plumber Whole House Heavy Duty Filter Cartridge
  • W50PEHD American Plumber Whole House Heavy Duty Filter Cartridge
  • 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 AP817-2 Whole House Water Filter Cartridge
  • CFS22 Cuno Whole House Filter Housing

    CFS22 Cuno Whole House Filter Housing

    $128.99
    MSRP: $148.34
    Save 13%
  • HB-20-1W Harmsco Calypso Blue Replacement Filter Cartridge
  • HB-20-20W Harmsco Calypso Blue Replacement Filter Cartridge
  • HB-20-50W Harmsco Calypso Blue Replacement Filter Cartridge

    HB-20-50W Harmsco Calypso Blue Replacement Filter Cartridge

    $38.99
    MSRP: $49.99
    Save 22%
  • HB-20-5W Harmsco Calypso Blue Replacement Filter Cartridge

    HB-20-5W Harmsco Calypso Blue Replacement Filter Cartridge

    $31.99
    MSRP: $36.79
    Save 13%
  • HC40-5 Harmsco Replacement Filter Cartridge

    HC40-5 Harmsco Replacement Filter Cartridge

    $92.99
    MSRP: $95.34
    Save 2%
  • SDC-45-2050 Hydronix Whole House Replacement Sediment Filter Cartridge
  • SPC-45-2005 Hydronix Whole House Replacement Sediment Filter Cartridge
  • WP1BB20P Pentek Whole House Filter Replacement Cartridge

    WP1BB20P Pentek Whole House Filter Replacement Cartridge

    $36.99
    MSRP: $39.55
    Save 6%
  • WP25BB20P Pentek Whole House Filter Replacement Cartridge

    WP25BB20P Pentek Whole House Filter Replacement Cartridge

    $35.99
    MSRP: $37.82
    Save 5%
  • WP5BB20P Pentek Replacement Filter Cartridge

    WP5BB20P Pentek Replacement Filter Cartridge

    $34.99
    MSRP: $42.54
    Save 18%
  • 650651 Trojan UV Max UV Water Purification System
  • 650652 Trojan UV Max UV System
  • 650686 Trojan UV Max UV Water Purification System
  • SC-740 Sterilight UV Disinfection System – 40 GPM
  • 3/4-30-F Rusco Polyester Screened Spin-Down Water Filtration System
  • 3/4-30SS-F Rusco Stainless Steel Screen Spin-Down Water Filtration System
  • 3/4-500-F Rusco Polyester Screened Spin-Down Water Filtration System
  • 3/4-500ST-F Rusco Polyester Screen Sediment Trapper System

    3/4-500ST-F Rusco Polyester Screen Sediment Trapper System

    $81.99
    MSRP: $96.59
    Save 15%
  • 3/4-60ST-F Rusco Polyester Screen Sediment Trapper System

    3/4-60ST-F Rusco Polyester Screen Sediment Trapper System

    $79.09
    MSRP: $93.25
    Save 15%

Items 1 to 48 of 65 total

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