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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30 Item(s)

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  • 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%
  • 36005 Hydrologic SmallBoy De-Chlorinator and Sediment Filter System With Upgraded KDF
  • 31050 Hydrologic TallBoy Sediment Filter & Dechlorinator

    31050 Hydrologic TallBoy Sediment Filter & Dechlorinator

    $153.99
    MSRP: $183.95
    Save 16%
  • HYDROLOGIC-22160

    HYDROLOGIC-22160

    $12.99
    MSRP: $17.99
    Save 28%
  • Triton Water Filters Replacement Color Changing Di Cartridge Hydrologic 22016
  • HYDROLOGIC-22155

    HYDROLOGIC-22155

    $64.39
    MSRP: $79.99
    Save 20%
  • 22120 Hydrologic Stealth RO 100GPD Membrane

    22120 Hydrologic Stealth RO 100GPD Membrane

    $59.99
    MSRP: $64.99
    Save 8%
  • 22070 Hydrologic Comparable Whole House Carbon Filter by Tier1
  • 22010 Hydrologic Comparable Whole House Water Filter by Tier1
  • RO1000 Hydrologic Evolution Tankless Reverse Osmosis Filter System
  • HYDROLOGIC-22125

    HYDROLOGIC-22125

    $13.99
    MSRP: $15.51
    Save 10%
  • 22045 Hydrologic Evolution Reverse Osmosis Membrane

    22045 Hydrologic Evolution Reverse Osmosis Membrane

    $153.99
    MSRP: $179.39
    Save 14%
  • 22043 KDF Hydrologic Carbon Pre-Filter For Evolution-RO1000

    22043 KDF Hydrologic Carbon Pre-Filter For Evolution-RO1000

    $45.99
    MSRP: $55.19
    Save 17%
  • 19026 Hydrologic Water Filtration System Pressure Gauge

    19026 Hydrologic Water Filtration System Pressure Gauge

    $33.79
    MSRP: $53.99
    Save 37%
  • 26040 Hydrologic Reverse Osmosis Membrane Flush Kit

    26040 Hydrologic Reverse Osmosis Membrane Flush Kit

    $15.99
    MSRP: $19.00
    Save 16%
  • 27020 Hydrologic Reverse Osmosis System Float Valve
  • 35010 Hydrologic UV Water Sterilizer For Reverse Osmosis Systems
  • 22080 Hydrologic Reverse Osmosis Carbon Pre-Filter
  • 25057 Hydrologic Reverse Osmosis Water Filter Tubing

    25057 Hydrologic Reverse Osmosis Water Filter Tubing

    $22.99
    MSRP: $23.99
    Save 4%
  • 31052 Hydrologic Triton DI200 GPD Water Filtration System
  • 31040 Hydrologic Stealth-RO200 Reverse Osmosis Water Filtration System
  • 31035 Hydrologic Stealth-RO100 Reverse Osmosis Filtration System

    31035 Hydrologic Stealth-150 Reverse Osmosis Filtration System

    $164.99
    MSRP: $225.00
    Save 27%
  • 22006 Hydrologic BigBoy Replacement Carbon Filter - Green
  • HYDROLOGIC-22010

    HYDROLOGIC-22010

    $44.99
    MSRP: $57.49
    Save 22%
  • HYDROLOGIC-22017

    HYDROLOGIC-22017

    $54.99
    MSRP: $71.29
    Save 23%
  • 22070 Hydrologic BigBoy Replacement Carbon Filter

    22070 Hydrologic BigBoy Replacement Carbon Filter

    $88.99
    MSRP: $123.04
    Save 28%
  • 31051 Hydrologic Triton DI100 Aquarium Reverse Osmosis System

    31051 Hydrologic Triton DI100 Aquarium Reverse Osmosis System

    $215.99
    MSRP: $261.00
    Save 17%
  • 22006 Hydrologic Comparable Whole House Water Filter by Tier1

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