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!

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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 87 total

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  • W20CLHD American Plumber Whole House Heavy Duty Filter Cartridge
  • 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
  • CP5-BBS-D Culligan Level 4 Whole House Filter Replacement 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
  • WP10BB97P Pentek Whole House Filter Replacement 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%
  • 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%
  • 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%
  • S12Q-PA Sterilight UV Water Sterilizer System
  • 650659 Trojan UVMAX Pro 30 UV Disinfection System
  • 650687 Trojan UVMAX F4 Plus UV Disinfection System
  • FS-1-30SS Rusco Spin-Down Steel Replacement Water Filter

    FS-1-30SS Rusco Spin-Down Steel Replacement Water Filter

    $16.99
    MSRP: $26.44
    Save 36%
  • FS-1-30STSS Rusco Sediment Trapper Steel Replacement Filter

    FS-1-30STSS Rusco Sediment Trapper Steel Replacement Filter

    $17.99
    MSRP: $33.34
    Save 46%
  • FS-1-40 Rusco Spin-Down Polyester Replacement Water Filter

    FS-1-40 Rusco Spin-Down Polyester Replacement Water Filter

    $11.99
    MSRP: $19.54
    Save 39%
  • FS-1-500ST Rusco Replacement Polyester Sediment Trapper Filter
  • FS-1-60STSS Rusco Replacement Steel Sediment Trapper Filter

    FS-1-60STSS Rusco Replacement Steel Sediment Trapper Filter

    $17.99
    MSRP: $33.34
    Save 46%
  • FS-3/4-100 Rusco Replacement Spin-Down Polyester Water Filter
  • FS-3/4-100STHT Rusco Replacement Hot Water Sediment Trapper Filter
  • FS-3/4-100STSS Rusco Replacement Steel Sediment Trapper Filter
  • FS-3/4-250 Rusco Spin-Down Polyester Replacement Water Filter
  • FS-3/4-30SS Rusco Spin-Down Steel Replacement Water Filter

    FS-3/4-30SS Rusco Spin-Down Steel Replacement Water Filter

    $17.99
    MSRP: $27.59
    Save 35%

Items 1 to 48 of 87 total

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