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 2546 total

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  • 55897C Halsey-Taylor Water Sentry VII Drinking Fountain Filter
  • AQUAMIRA-67401

    AQUAMIRA-67401

    $13.09
    MSRP: $17.19
    Save 24%
  • AQUAPURE-AP117RO

    AQUAPURE-AP117RO

  • W9125010 Doulton Specialty Replacement Filter Cartridge
  • W9222900 Doulton Ceramic Water Filter
  • W9222909 Doulton Imperial SuperCarb OBE Replacement Element
  • FILTRETE-WS01-WH

    FILTRETE-WS01-WH

    $46.99
    MSRP: $52.89
    Save 11%
  • HALSEY-TAYLOR-55898C

    HALSEY-TAYLOR-55898C

    $91.69
    MSRP: $96.24
    Save 5%
  • HYDROLOGIC-22105

    HYDROLOGIC-22105

    $8.99
    MSRP: $12.06
    Save 25%
  • HYDROLOGIC-22110

    HYDROLOGIC-22110

    $18.99
  • HYDROLOGIC-22140

    HYDROLOGIC-22140

    $9.99
    MSRP: $13.79
    Save 28%
  • HYDROLOGIC-36005

    HYDROLOGIC-36005

    $101.99
    MSRP: $119.59
    Save 15%
  • SDC-25-3005 Hydronix Whole House Replacement Sediment Filter Cartridge
  • HYDROS-HBSF-GRN

    HYDROS-HBSF-GRN

    $27.99
    MSRP: $34.49
    Save 19%
  • HYDROS-HBSF-ORNG

    HYDROS-HBSF-ORNG

    $27.99
    MSRP: $34.49
    Save 19%
  • 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
  • WATER-SENTINEL-WS-21

    WATER-SENTINEL-WS-21

    $12.99
    MSRP: $64.39
    Save 80%
  • HYDROS-HBSF-PNK

    HYDROS-HBSF-PNK

    $27.99
    MSRP: $34.49
    Save 19%
  • INSINKERATOR-F-201R

    INSINKERATOR-F-201R

    $67.99
    MSRP: $70.00
    Save 3%
  • INSINKERATOR-F-601R

    INSINKERATOR-F-601R

    $130.99
    MSRP: $134.42
    Save 3%
  • 8017757 Katadyn MyBottle Ultralight Series 24-Ounce Personal Water Purifier Bottle - Green Deer
  • KAT-PUMP-VARIO

    KAT-PUMP-VARIO

    $94.95
    MSRP: $111.49
    Save 15%
  • OMNIPURE-K5520SS

    OMNIPURE-K5520SS

    $21.09
    MSRP: $27.59
    Save 24%
  • Everpure H-54 Water Filter Replacement Cartridge (EV9730-06)
  • SPC-25-1030 Hydronix Pleated Sediment Water Filter

    SPC-25-1030 Hydronix Pleated Sediment Water Filter

    $9.99
    MSRP: $13.21
    Save 24%
  • WATERWAY-SB-3

    WATERWAY-SB-3

    $11.39
  • WATERWAY-SB-2R-2

    WATERWAY-SB-2R-2

    $8.99
  • HYDROLOGIC-31050

    HYDROLOGIC-31050

    $153.99
    MSRP: $183.95
    Save 16%
  • Aqua-Pure 3M Easy Full Flow Drinking Water Filtration System CYST-FF
  • Crystal Quest 2-7/8 in x 9-3/4 in Nitrate Filter Cartridge
  • Harmsco BC4-1-T-EP Electropolish Band Clamp Filter Housing
  • 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%
  • CL6ROT33-A Omnipure GAC Inline Water Filter

    CL6ROT33-A Omnipure GAC Inline Water Filter

    $10.39
    MSRP: $14.99
    Save 31%
  • PS1-20C Pentek Sediment Water Filter

    PS1-20C Pentek Sediment Water Filter

    $7.99
    MSRP: $13.55
    Save 41%
  • TIER1-IN-WF0150

    TIER1-IN-WF0150

    $7.99
    MSRP: $14.99
    Save 47%
  • Coconut Shell Granular Activated Carbon Inline Water Filter by Tier1
  • TIER1-KDF55-20BB

    TIER1-KDF55-20BB

    $89.99
    MSRP: $109.99
    Save 18%
  • AF-10-2210 Aries Comparable Sediment Water Filter by Tier1

    AF-10-2210 Aries Comparable Sediment Water Filter by Tier1

    $36.99
    MSRP: $56.39
    Save 34%
  • TIER1-P-12

    TIER1-US-WF0140

    $41.99
  • P1-20BB Pentek Comparable Whole House Sediment Water Filter by Tier1
  • SDC-45-2050 Hydronix Comparable Sediment Water Filter by Tier1
  • TIER1-SC1215105

    TIER1-SC1215105

    $7.99
  • TIER1-TROM-100

    TIER1-TROM-100

    $38.99
  • TIER1-TROM-24

    TIER1-TROM-24

    $32.99
  • TIER1-TROM-50

    TIER1-TROM-50

    $30.99
  • TIER1-TROM-75

    TIER1-TROM-75

    $26.99

Items 1 to 48 of 2546 total

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