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!
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  • 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 355 total

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  • HF-150 Culligan Whole House Filter System

    HF-150 Culligan Whole House Filter System

    $21.99
    MSRP: $26.44
    Save 17%
  • 4WH-STDGR-F02 Filtrete Replacement Filter Cartridge (2-Pack)
  • PX30-9-78 Purtrex Replacement Filter Cartridge

    PX30-9-78 Purtrex Replacement Water Filter Cartridge

    $4.09
    MSRP: $9.99
    Save 59%
  • PX50-9-78 Purtrex Replacement Filter Cartridge

    PX50-9-78 Purtrex Replacement Water Filter

    $5.09
    MSRP: $10.99
    Save 54%
  • GX01-9-78 Hytrex Replacement Filter Cartridge

    GX01-9-78 Hytrex Replacement Water Filter Cartridge

    $5.49
    MSRP: $8.61
    Save 36%
  • GX10-9-78 Hytrex Replacement Filter Cartridge

    GX10-9-78 Hytrex Replacement Water Filter Cartridge

    $6.99
    MSRP: $8.61
    Save 19%
  • GX30-9-78 Hytrex Replacement Filter Cartridge

    GX30-9-78 Hytrex Water Filter Cartridge

    $5.99
    MSRP: $8.61
    Save 30%
  • W9223022 Doulton Replacement Ceramic Filter

    W9223022 Doulton Ultracarb Replacement Ceramic Filter

    $62.00
    MSRP: $82.65
    Save 25%
  • SCWH-5 WTR Culligan Water Filter Cartridge

    SCWH-5 WTR Culligan Water Filter Cartridge

    $9.99
    MSRP: $10.99
    Save 9%
  • 655130-43/DFX-CB-10 Pentek Diamond Polyspun Carbon Block Replacement
  • Pentek ECP20-10 Replacement Water Filter Cartridge

    ECP20-10 Pentek Replacement Filter Cartridge

    $7.99 MSRP: $9.42
    Save 15%
  • Pentek P25-20 Whole House Replacement Sediment Filter Cartridge
  • Pentek P25 Whole House Replacement Sediment Filter Cartridge
  • P5 Pentek Whole House Replacement Sediment Filter Cartridge

    P5 Pentek Whole House Replacement Sediment Filter Cartridge

    $6.99 MSRP: $10.34
    Save 32%
  • PCC212 Pentek Replacement Filter Cartridge

    PCC212 Pentek Replacement Filter Cartridge

    $20.99 MSRP: $22.41
    Save 6%
  • Pentek PD-10-934 Whole House Water Filter Replacement Cartridge

    PD-10-934 Pentek Whole House Filter Replacement Cartridge

    $6.99 MSRP: $8.15
    Save 14%
  • Pentek PD-25-934 Whole House Water Filter Replacement Cartridge

    PD-25-934 Pentek Whole House Filter Replacement Cartridge

    $6.99 MSRP: $8.15
    Save 14%
  • Pentek PS5-10C Whole House Replacement Sediment Water Filter Cartridge
  • Pentek R30 Replacement Water Filter Cartridge
  • R50 Pentek Whole House Filter Replacement Cartridge

    R50 Pentek Whole House Filter Replacement Cartridge

    $7.99 MSRP: $9.42
    Save 15%
  • AP-GRMB-05PP-10UB Aquapure Whole House Filter Replacement by Tier1
  • SDC-25-1005 Hydronix Whole House Filter Replacement by Tier1
  • HAC-10-LR-W Harmsco Whole House Wilter Replacement by Tier1

    HAC-10-LR-W Harmsco Whole House Wilter Replacement by Tier1

    $8.49 MSRP: $11.49
    Save 26%
  • AP1001 3M Aqua-Pure Comparable Whole House Sediment Water Filter by Tier1
  • AP-GRMB-01PP-10UB 3M Aqua-Pure Comparable Whole House Sediment Water Filter by Tier1
  • P1-D Culligan Comparable Whole House Sediment Water Filter by Tier1
  • SBC-25-1001 Hydronix Comparable Whole House Sediment Water Filter by Tier1
  • SDC-25-1001 Hydronix Comparable Whole House Sediment Water Filter by Tier1
  • GX01-9-78 Hytrex Comparable Whole House Sediment Water Filter by Tier1
  • GX05-9-78 Hytrex Comparable Whole House Sediment Water Filter by Tier1
  • RWC-5 American Plumber Undersink Filter Replacement Cartridge
  • 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)
  • W30W American Plumber Whole House Sediment Water 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)
  • WCC American Plumber Undersink Filter Replacement Cartridge

    WCC American Plumber Undersink Filter Replacement Cartridge

    $19.99
    MSRP: $26.44
    Save 24%
  • WPD-110 American Plumber Whole House Sediment Filter Cartridge (2-Pack)
  • WROM-230T American Plumber Reverse Osmosis Replacement Membrane
  • WROM-230TN American Plumber Reverse Osmosis Replacement Membrane
  • WROR American Plumber Reverse Osmosis Replacement Filter Kit
  • 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 355 total

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