Discount Water Filters and Air Filters at Discount Filter Store.com

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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 72 total

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  • AF-20-3690-BB Aries Replacement Whole House Fluoride Removal Filter

    AF-20-3690-BB Aries Whole House Fluoride Removal Filter

    $126.05
    MSRP: $171.99
    Save 27%
  • HYDRONIX-SDC-25-3025

    HYDRONIX-SDC-25-3025

    $8.99
    MSRP: $10.91
    Save 18%
  • HYDRONIX-SDC-25-4025

    HYDRONIX-SDC-25-4025

    $19.99
  • TIER1-P25-30

    TIER1-P25-30

    $11.49
  • SDC-25-4025 Hydronix Comparable Whole House Sediment Water Filter by Tier1
  • RFC-BBS-D Culligan Comparable Whole House Carbon Water Filter by Tier1
  • TIER1-P25-934

    TIER1-P25-934

    $3.99
  • AF-10-2010 Aries GAC/KDF Water Filter Cartridge

    AF-10-2010 Aries GAC/KDF Water Filter Cartridge

    $16.99
    MSRP: $22.99
    Save 26%
  • AF-10-1053 Aries Specialty Cartridge Hydrogen Sulfide Removal
  • AF-10-2011 Aries Specialty Cartridge 10-inch x 2.5-inch 1 LBS KDF/GAC
  • RFC-93 Pentek Radial Flow Carbon Water Filter Cartridge

    RFC-93 Pentek Radial Flow Carbon Water Filter Cartridge

    $23.99
    MSRP: $27.99
    Save 14%
  • Aries AF-10-2115 KDF/Granular Activated Carbon

    Aries AF-10-2115 KDF/Granular Activated Carbon

    $39.99
    MSRP: $49.00
    Save 18%
  • DGD-7525-20 Pentek Whole House Water Filter
  • DGD-7525 Pentek Whole House Sediment Filter
  • Pentek WP25BB97P Whole House Water Filter Replacement Cartridge
  • Pentek WPX25BB97P Whole House Water Filter Replacement Cartridge
  • Tier1 P20-20BB Whole House Replacement Sediment Filter Cartridge
  • FXHTC GE Comparable Whole House Radial Flow Carbon Water Filter by Tier1
  • AP-GRMB-20PP-10UB Aqua-Pure Comparable Whole House Sediment Water Filter by Tier1
  • GX20-9-78 Hytrex Comparable Whole House Sediment Water Filter by Tier1
  • P25 Pentek Comparable Whole House Sediment Filter by Tier1
  • PS20-10C Pentek Comparable Whole House Sediment Water Filter by Tier1
  • PX20-9-78 Purtrex Comparable Whole House Sediment Water Filter by Tier1
  • AP817 3M Aqua-Pure Comparable Whole House Carbon Water Filter by Tier 1
  • RFC-BBS-D Culligan Comparable Whole House Carbon Water Filter by Tier1
  • RFC-BB Pentek Comparable Whole House Carbon Water Filter by Tier1
  • RFC-93 Whole House Filter Replacement Cartridge by Tier1
  • RFC-20 Whole House Filter Replacement Cartridge by Tier1
  • RFC-20BB Whole House Filter Replacement Cartridge by Tier1

    RFC-20BB Whole House Filter Replacement Cartridge by Tier1

    $48.99
    MSRP: $56.99
    Save 14%
  • RFC-20 Pentek Comparable Whole House Filter Replacement Cartridge by Tier1
  • HARMSCO-PO-25-G1PS-EA

    HARMSCO-PO-25-G1PS-EA

    $18.99
  • Pentek BPHE-410-25 Polypropylene High Efficiency Filter Bag
  • Pentek PO25G4S Polypropylene Filter Bag

    Pentek PO25G4S Polypropylene Filter Bag

    $6.19
    MSRP: $14.99
    Save 59%
  • W25P American Plumber Whole House Sediment Filter Cartridge (2-Pack)
  • AP111 3M Aqua-Pure Whole House Filter Replacement Cartridge
  • 3M Aqua-Pure AP111-2 Whole House Water Filter
  • AF-10-3690 Aries Replacement Fluoride Filter Cartridge

    AF-10-3690 Aries Replacement Fluoride Filter Cartridge

    $28.99
    MSRP: $32.19
    Save 10%
  • CQE-RC-04049 Crystal Quest Fluoride Multi Replacement Filter Cartridge
  • PO-25-G2PS-EA Harmsco Bag Filter

    PO-25-G2PS-EA Harmsco Filter Bag

    $22.99
    MSRP: $25.34
    Save 9%
  • PENTEK-KE25G1S

    PENTEK-KE25G1S

    $4.09
    MSRP: $7.00
    Save 42%
  • PENTEK-KO25G2S

    PENTEK-KO25G2S

    $6.05
    MSRP: $9.42
    Save 36%
  • PENTEK-KO25HE2

    PENTEK-KO25HE2

    $16.99
  • 85470 Inline Water Filters Washing Machine Inline Water Filter
  • BP-410-25 Pentek Polypropylene Bag Filter

    BP-410-25 Pentek Polypropylene Bag Filter

    $4.99
    MSRP: $7.00
    Save 29%
  • PENTEK-BP-420-25

    PENTEK-BP-420-25

    $4.99
    MSRP: $7.00
    Save 29%

Items 1 to 48 of 72 total

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