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.

Items 1 to 48 of 61 total

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  • AMERICAN-PLUMBER-W50PE

    AMERICAN-PLUMBER-W50PE

    $16.99
    MSRP: $18.39
    Save 8%
  • AMERICAN-PLUMBER-W50PEHD

    AMERICAN-PLUMBER-W50PEHD

    $23.99
  • AMERICAN-PLUMBER-W50W

    AMERICAN-PLUMBER-W50W

    $13.99
  • AQUAPURE-AP124

    AQUAPURE-AP124

    $12.99
    MSRP: $17.24
    Save 25%
  • AQUA-PURE-AP124-3

    AQUA-PURE-AP124-3

    $29.99
    MSRP: $35.64
    Save 16%
  • AQUAPURE-AP814

    AQUAPURE-AP814

    $30.99
    MSRP: $33.34
    Save 7%
  • AQUAPURE-AP814-2

    AQUAPURE-AP814-2

    $55.99
    MSRP: $65.54
    Save 15%
  • CULLIGAN-PR-1

    CULLIGAN-PR-1

    $6.99
    MSRP: $12.52
    Save 44%
  • CULLIGAN-PR-3U

    CULLIGAN-PR-3U

    $22.99
    MSRP: $25.29
    Save 9%
  • CULLIGAN-R50-BBSA-D

    CULLIGAN-R50-BBSA-D

    $18.99
  • 3WH-HDPL-F01 Filtrete Replacement Filter Cartridge

    3WH-HDPL-F01 3M Filtrete Water Filter Cartridge

    $14.99
    MSRP: $17.24
    Save 13%
  • 3WH-HD-S01 Filtrete Whole House Sump System

    3WH-HD-S01 3M Filtrete Whole House Sump Filter System

    $54.99
    MSRP: $66.69
    Save 18%
  • 3WH-STDPL-F02 Filtrete Replacement Filter Cartridge (2-Pack)
  • 3WH-STD-S01 Filtrete Whole House Sump System

    3WH-STD-S01 3M Filtrete Whole House Sump Filter System

    $26.99
    MSRP: $33.34
    Save 19%
  • FRC1D

    FRC1D

    $6.99
    MSRP: $12.41
    Save 44%
  • HARMSCO-HB-20-50W

    HARMSCO-HB-20-50W

    $36.99
  • HYDRONIX-SDC-45-2050

    HYDRONIX-SDC-45-2050

    $20.99
  • KO50G2S Pentek Polypropylene Bag Filter

    KO50G2S Pentek Polypropylene Bag Filter

    $6.19
    MSRP: $9.42
    Save 34%
  • KO50G4S Pentek Polypropylene Filter Bag

    KO50G4S Pentek Polypropylene Filter Bag

    $4.99
    MSRP: $5.85
    Save 15%
  • PD-50-20 Pentek Whole House Replacement Sediment Filter Cartridge
  • PD-50-934 Pentek Whole House Filter Replacement Cartridge
  • WPX50BB97P Pentek Replacement Filter Cartridge

    WPX50BB97P Pentek Replacement Filter Cartridge

    $19.99
    MSRP: $24.14
    Save 17%
  • PURTREX-PX50-9-78

    PURTREX-PX50-9-78

    $4.99
    MSRP: $6.89
    Save 28%
  • HYTREX-GX50-20

    HYTREX-GX50-20

    $7.99
    MSRP: $11.49
    Save 30%
  • OMNIFILTER-F1-S6-05

    OMNIFILTER-F1-S6-05

    $15.99
    MSRP: $19.31
    Save 17%
  • BN-420-50 Pentek Nylon Bag Filter

    BN-420-50 Pentek Nylon Bag Filter

    $14.99
    MSRP: $15.63
    Save 4%
  • BP-420-50 Pentek Polypropylene Bag Filter

    BP-420-50 Pentek Polypropylene Bag Filter

    $4.99
    MSRP: $8.15
    Save 39%
  • CW-50 Pentek Whole House Filter Replacement Cartridge

    CW-50 Pentek Whole House Filter Replacement Cartridge

    $6.99
    MSRP: $10.34
    Save 32%
  • ECP50-10 Pentek Replacement Filter Cartridge

    ECP50-10 Pentek Replacement Filter Cartridge

    $7.99
    MSRP: $8.15
    Save 2%
  • ECP50-20 Pentek Replacement Filter Cartridge

    ECP50-20 Pentek Replacement Filter Cartridge

    $14.99
    MSRP: $17.70
    Save 15%
  • HYDRONIX-SWC-45-2050

    HYDRONIX-SWC-45-2050

    $25.99
  • OMNIFILTER-F1

    OMNIFILTER-F1

    $8.05
    MSRP: $20.69
    Save 61%
  • HYDRONIX-SDC-25-2050

    HYDRONIX-SDC-25-2050

    $8.99
  • HYDRONIX-SPC-25-1050

    HYDRONIX-SPC-25-1050

    $6.99
  • P50-20 Tier1 Polypropylene Sediment Water Filter Cartridge
  • AQUA-PURE-AP124-2C

    AQUA-PURE-AP124-2C

    $26.99
    MSRP: $33.34
    Save 19%
  • HYDRONIX-SDC-25-4050

    HYDRONIX-SDC-25-4050

    $12.99
  • HYTREX-GX50-30

    HYTREX-GX50-30

    $12.99
    MSRP: $14.36
    Save 10%
  • HYTREX-GX50-9-78

    HYTREX-GX50-9-78

    $5.99
    MSRP: $7.12
    Save 16%
  • Pentek BPHE-410-50 Polypropylene High Efficiency Filter Bag
  • Pentek PO50G3S Polypropylene Filter Bag

    Pentek PO50G3S Polypropylene Filter Bag

    $5.99
    MSRP: $6.89
    Save 13%
  • PURTREX-PX50-20

    PURTREX-PX50-20

    $5.99
    MSRP: $7.92
    Save 24%
  • PURTREX-PX50-30

    PURTREX-PX50-30

    $9.99
    MSRP: $11.49
    Save 13%
  • AQUAPURE-AP-GRMB-50PP-10UB

    AQUAPURE-AP-GRMB-50PP-10UB

    $5.99
    MSRP: $9.19
    Save 35%
  • SDC-45-2050 Hydronix Comparable Sediment Water Filter by Tier1
  • CW-50 Pentek Comparable Whole House Sediment Water Filter by Tier1
  • R50-BB Pentek Comparable Whole House Sediment Water Filter by Tier1
  • W50PEHD American Plumber Comparable Whole House Water Filter by Tier1

Items 1 to 48 of 61 total

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