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 473 total

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  • HYDRONIX-SDC-25-3005

    HYDRONIX-SDC-25-3005

    $12.89
  • TFM-18-A Tier1 Reverse Osmosis Membrane

    TFM-18-A Tier1 Reverse Osmosis Membrane

    $35.99
    MSRP: $45.99
    Save 22%
  • TFM-36-A Tier1 Reverse Osmosis Membrane

    TFM-36-A Tier1 Reverse Osmosis Membrane

    $36.99
    MSRP: $49.99
    Save 26%
  • TFM-50-A Tier1 Reverse Osmosis Membrane
  • SWC-25-1020 Hydronix String Wound Sediment Water Filter

    SWC-25-1020 Hydronix String Wound Sediment Water Filter

    $6.99
    MSRP: $9.99
    Save 30%
  • Coconut Shell Granular Activated Carbon Inline Water Filter by Tier1
  • TIER1-KDF55-20BB

    TIER1-KDF55-20BB

    $89.99
    MSRP: $109.99
    Save 18%
  • P-12 Under Sink Water Replacement Filter Cartridge by Tier1
  • TIER1-P1-20BB

    TIER1-P1-20BB

    $21.99
  • Tier1 TROM-100 RO Membrane
  • HYDRONIX-SDC-25-4001

    HYDRONIX-SDC-25-4001

    $19.99
  • P10-30 Spun Wound Polypropylene Replacement Filter by Tier1 (10 micron)
  • Hydronix SDC-25-3001 Polypropylene Sediment Filter
  • HYDRONIX-SDC-25-3025

    HYDRONIX-SDC-25-3025

    $8.99
    MSRP: $10.91
    Save 18%
  • Hydronix SDC-25-3075 Polypropylene Sediment Filter
  • Hydronix SDC-25-4005 Polypropylene Sediment Filter

    Hydronix SDC-25-4005 Polypropylene Sediment Filter

    $11.99
    MSRP: $13.56
    Save 12%
  • Hydronix SDC-25-4010 Polypropylene Sediment Filter
  • HYDRONIX-SDC-25-4025

    HYDRONIX-SDC-25-4025

    $19.99
  • Hydronix SDC-25-4050 Polypropylene Sediment Filter
  • HYDRONIX-SDC-25-4075

    HYDRONIX-SDC-25-4075

    $16.99
  • SDC-25-3001 Hydronix Comparable Whole House Sediment Water Filter by Tier1
  • SDC-25-4001 Hydronix Comparable Whole House Sediment Water Filter by Tier1
  • SDC-25-4010 Hydronix Comparable Whole House Sediment Water Filter by Tier1
  • TIER1-P25-30

    TIER1-P25-30

    $11.49
  • SDC-25-4025 Hydronix Comparable Whole House Sediment Water Filter by Tier1
  • TIER1-P5-30

    TIER1-P5-30

    $6.95
  • P5-40 Spun Wound Polypropylene Replacement Filter by Tier1 (5 micron)
  • SDC-25-4050 Hydronix Comparable Whole House Sediment Water Filter by Tier1
  • SDC-25-3075 Hydronix Comparable Whole House Sediment Water Filter by Tier1
  • SDC-25-4075 Hydronix Comparable Whole House Sediment Water Filter by Tier1
  • 155014-43 Pentek Comparable Whole House Sediment Water Filter by Tier1
  • TIER1-AP110-934

    TIER1-AP110-934

    $7.99
  • FXUSC GE Comparable Whole House Sediment Water Filter 2-Pack by Tier1
  • TIER1-AP85-934

    TIER1-AP85-934

    $18.99
  • TIER1-C5-20

    TIER1-C5-20

  • CW-F-D Culligan Comparable Whole House Water Filter 2-Pack by Tier1
  • CW-50 Pentek Comparable Whole House Sediment Water Filter by Tier1
  • R50-BB Pentek Comparable Whole House Sediment Water Filter by Tier1
  • RFC-BBS-D Culligan Comparable Whole House Carbon Water Filter by Tier1
  • S1A-D Culligan Comparable Whole House Sediment Water Filter 2-Pack by Tier1
  • W20CLA American Plumber Comparable Whole House Water Filter by Tier1
  • TIER1-EPM10-20

    TIER1-EPM10-20

    $11.99
  • TIER1-EPM4-20BB

    TIER1-EPM4-20BB

    $36.99
    MSRP: $48.99
    Save 24%
  • RS1SS OmniFilter Comparable Whole House Water Filter by Tier1
  • RS6 OmniFilter Comparable Whole House Water Filter by Tier1
  • FXWTC GE Comparable Whole House Water Filter 2-Pack by Tier1
  • TIER1-P25-934

    TIER1-P25-934

    $3.99
  • RS2SS OmniFilter Comparable Whole House Water Filter by Tier1

Items 1 to 48 of 473 total

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