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 135 total

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  • EPM-20BB Pentek Comparable Whole House Water Filter by Tier1
  • WFPF13003B DuPont Universal Whole House Filtration System
  • WFHD13001B DuPont Universal Heavy Duty Whole House Filtration System
  • WFHDC3001 DuPont Universal Heavy Duty Pleated Poly Whole House Cartridge
  • WFHDC8001 DuPont Universal Heavy Duty Carbon Wrap 2-Phase Cartridge
  • WFPF38001C DuPont Universal Valve-In-Head Whole House Water Filtration System
  • WFPFC8002 DuPont Universal Whole House Carbon Wrap Two-Phase Cartridge (2-pack)
  • WFPFC3002 DuPont Universal Whole House Pleated Poly Filter Cartridge (2-Pack)
  • FRSS-3.5 Sterilight 3.5 GPM 1/2-inch Flow Restrictor
  • K2586-KK Omnipure Inline Water Filter

    K2586-KK Omnipure Inline Water Filter

    $14.29
    MSRP: $20.99
    Save 32%
  • WB-20-W Harmsco Pleated Commercial Water Filter Cartridge

    WB-20-W Harmsco Pleated Commercial Water Filter Cartridge

    $10.99
    MSRP: $14.99
    Save 27%
  • FRSS-3.5 Viqua 3.5 GPM 1/2-inch Flow Restrictor

    FRSS-3.5 Viqua 3.5 GPM 1/2-inch Flow Restrictor

    $69.99
    MSRP: $90.00
    Save 22%
  • Pentek 158599 Clear 3G Slim Line Filter Housing

    Pentek 158599 Clear 3G Slim Line Filter Housing

    $22.99
    MSRP: $28.99
    Save 21%
  • Pentek 158637 Clear 3G Slim Line Filter Housing with Pressure Relief
  • Pentek 158214 Clear Traditional Slim Line Filter Housing

    Pentek 158214 Clear Traditional Slim Line Filter Housing

    $27.99
    MSRP: $37.99
    Save 26%
  • C1-20 Pentek Comparable Whole House Water Filter by Tier1 (4-Pack)
  • Viqua VT4-DWS11 Ultraviolet Filtration System

    Viqua VT4-DWS11 Ultraviolet Filtration System

    $335.00
    MSRP: $529.99
    Save 37%
  • EP-20BB Pentek Replacement Water Filter
  • EPM-20BB Pentek Whole House Filter Cartridge

    EPM-20BB Pentek Whole House Filter Replacement Cartridge

    $47.99 MSRP: $59.99
    Save 20%
  • GAC20-BB Pentek Whole House Water Filter

    GAC20-BB Pentek Whole House Filter Replacement Cartridge

    $44.99 MSRP: $66.31
    Save 32%
  • Pentek NCP-20 Whole House Water Filter Replacement Cartridge

    Pentek NCP-20 Whole House Water Filter Replacement Cartridge

    $14.99 MSRP: $20.57
    Save 27%
  • C1-20 Pentek Comparable Whole House Carbon Water Filter by Tier1
  • The Pentek C1 comparable Whole House Carbon Water Filter by Tier1

    Pentek C1 Comparable Carbon Block Water Filter by Tier1

    $10.99 MSRP: $19.99
    Save 45%
  • TO1SS OmniFilter Whole House Water Filter
  • TO6-SS2-S06 OmniFilter Whole House Water Filter
  • Pentek C1-20 Carbon Water Filter Replacement Cartridge

    Pentek C1-20 Water Filter Cartridge Replacements

    $16.99 MSRP: $20.00
    Save 15%
  • AP117 3M Aqua-Pure Comparable Whole House Sediment Water Filter by Tier1
  • APS117 3M Aqua-Pure Comparable Whole House Carbon Water Filter by Tier1
  • D-20 Culligan Comparable Whole House Carbon Water Filter by Tier1
  • CFS117 Cuno Comparable Whole House Sediment Water Filter by Tier1
  • HDG-P117 Hydronix Comparable Whole House Sediment Water Filter by Tier1
  • WHKF-GAC AP117 Whirlpool Comparable Whole House Sediment Water Filter by Tier1
  • EPM-20BB Pentek Comparable Whole House Water Filter by Tier1

    EPM-20BB Pentek Comparable Whole House Water Filter by Tier1

    $36.99 MSRP: $48.99
    Save 24%
  • Pentek CFB-Plus10BB Fiberdyne Carbon Filter

    Pentek CFB-Plus10BB Fiberdyne Carbon Filter

    $25.39
    MSRP: $32.99
    Save 23%
  • W5CIP American Plumber Undersink Filter Replacement Cartridge (2-Pack)
  • WRC25HD American Plumber Whole House Heavy Duty Filter Cartridge
  • WRC25HD20 American Plumber Whole House 20-inch Heavy Duty Filter Cartridge
  • 3M Aqua-Pure AP117 Whole House Water Filter Cartridge

    3M Aqua-Pure AP117 Whole House Filter Replacement Cartridge

    $28.99
    MSRP: $54.13
    Save 46%
  • 3M Aqua-Pure APS117 Whole House Water Filter Replacement Cartridge
  • 42622 Brita On-Tap FF-100 Faucet Filter System - Chrome
  • 42617 Brita On-Tap FR-200 Faucet Filter Replacement Cartridge - Chrome
  • 42618 Brita On-Tap FR-200 Faucet Filter Replacement Cartridge - Chrome (2-Pack)
  • 42401 Brita On-Tap FR-200 Faucet Filter Replacement Cartridge - White
  • 42402 Brita On-Tap FR-200 Faucet Filter Replacement Cartridge - White (2-Pack)
  • HSH-C135 Culligan Handheld Filtered Shower Head with Massage
  • WHR-140 Culligan Level 2 Shower Filter Replacement Cartridge
  • WSH-C125 Culligan Filtered Shower Head with Massage Feature

    WSH-C125 Culligan Filtered Shower Head with Massage Feature

    $34.99
    MSRP: $39.66
    Save 12%
  • CFS01S Cuno Whole House Filter Housing

    CFS01S Cuno Whole House Water Filter Housing

    $132.05
    MSRP: $152.94
    Save 14%

Items 1 to 48 of 135 total

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