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!

No Worries...
  • Your filters are guaranteed to be the right fit!
  • Our products are price match guaranteed!
  • Our customer service team is guaranteed to answer your call!
  • You’re guaranteed to find expert help!

Learn more about our No Worries Guarantee

Water Filtration Systems, Filters, & Parts

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.

Clear All
Compare

Items 1 to 25 of 268 total

Page:
  1. 1
  2. 2
  3. 3
  4. 4
  5. 5

Grid  List 

Set Descending Direction
  1. W9125010 Doulton CleanSoft Scale Pre-Filter Replacement Cartridge

    W9125010 Doulton CleanSoft Scale Pre-Filter Replacement Cartridge

    Fits Doulton Short Mount Countertop, Undersink and Inline Water Filtration Systems Learn More
    $30.00 MSRP:  $59.96
  2. W9222900 Doulton Ceramic Water Filter

    W9222900 Doulton Slim Line SuperCarb Undersink Ceramic Water Filter

    Fits Doulton Short Mount Countertop, Undersink and Inline Water Filtration Systems Learn More
    $34.00 MSRP:  $52.73
  3. W9222909 Doulton Imperial SuperCarb OBE Ceramic Water Filter

    W9222909 Doulton Imperial SuperCarb OBE Ceramic Water Filter

    Fits most standard 2.5-inch by 10-inch water filtration system housings Learn More
    $39.00 MSRP:  $59.71
  4. TFM-18-A Tier1 Reverse Osmosis Membrane

    TFM-18-A Tier1 Reverse Osmosis Membrane

    Fits select Culligan and various other brands of reverse osmosis systems Learn More
    $35.99 MSRP:  $45.99
  5. TFM-36-A Tier1 Reverse Osmosis Membrane

    TFM-36-A Tier1 Reverse Osmosis Membrane

    Fits select Culligan reverse osmosis systems Learn More
    $36.99 MSRP:  $49.99
  6. AF-10-2210 Aries Comparable Sediment Water Filter by Tier1

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

    Fits standard number 10, slim-line number 10, and other filter housings using 10 x 2.5-inch filters Learn More
    $36.99 MSRP:  $56.39
  7. Tier1 TROM-100 RO Membrane
  8. Tier1 TROM-24 RO Membrane
  9. TROM-50 Reverse Osmosis Membrane by Tier1 (50 GPD)

    TROM-50 Reverse Osmosis Membrane by Tier1 (50 GPD)

    Fits most residential RO systems with 50 gallons per day of flow rate Learn More
    $30.99 MSRP:  $50.99
  10. WFFM350XBN DuPont Deluxe Faucet Mount Drinking Water Filter - Brushed Nickel
  11. WFFMC303X DuPont Faucet Mount Replacement Cartridges - Ultra Protection Filter (3-pack)
  12. EPM-20BB Pentek Comparable Whole House Water Filter by Tier1

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

    Fits most standard 20 x 4.5-inch housings Learn More
    $36.99 MSRP:  $48.99
  13. WFDW120009W DuPont Universal Drinking Water Filter System

    WFDW120009W DuPont Universal Drinking Water Filter System

    Fits DuPont WFDW 2000 series, 4000 series, 7000 series Learn More
  14. WFDWC70001 DuPont Universal Drinking Water Carbon Block Cartridge

    WFDWC70001 DuPont Universal Drinking Water Carbon Block Cartridge

    Fits WFDW120009W DuPont Universal Drinking Water Filter System and other brands of 10-inch standard-size filter systems Learn More
    $33.99 MSRP:  $45.85
  15. WFPF13003B DuPont Universal Whole House Filtration System

    WFPF13003B DuPont Universal Whole House Filtration System

    For use with DuPont WFPFC whole house filter cartridges Learn More
  16. WFPF38001C DuPont Universal Valve-In-Head Whole House Water Filtration System

    WFPF38001C DuPont Universal Valve-In-Head Whole House Water Filtration System

    For use with DuPont WFPFC whole house filter cartridges Learn More
  17. Triton Water Filters Replacement Color Changing Di Cartridge Hydrologic 22016

    Triton Water Filters Replacement Color Changing Di Cartridge Hydrologic 22016

    Fits standard 10 inches x 2.5 inches housings Learn More
    $36.89 MSRP:  $48.99
  18. ICF-2512-ALK Hydronix Inline Coconut Carbon Filter Cartridge

    ICF-2512-ALK Hydronix Inline Coconut Carbon Filter Cartridge

    Fits most 1/4-inch standard water lines Learn More
    $38.99 MSRP:  $50.99
  19. QS-463 Viqua Quartz Sleeve for S463RL UV Lamp

    QS-463 Viqua Quartz Sleeve for S463RL UV Lamp

    For use with Viqua ultraviolet disinfection systems using the S463RL UV lamp Learn More
    $35.00 MSRP:  $45.00
  20. QS-810 Viqua Quartz Sleeve for S810RL UV Lamp
  21. 602732 Viqua Quartz Sleeve for 602805 UV Lamp

    602732 Viqua Quartz Sleeve for 602805 UV Lamp

    For use with Viqua ultraviolet disinfection systems using the 602805 UV lamp Learn More
    $39.00 MSRP:  $49.99
  22. 603053 Viqua Bottom Sleeve Bolt

    603053 Viqua Bottom Sleeve Bolt

    Fits Viqua PRO series, H/PLUS, K/PLUS systems. Fits discontinued Trojan UV Max G/PLUS, J/PLUS systems. Learn More
    $30.99 MSRP:  $33.34
  23. OB1-S-S06 OmniFilter Undersink Water Filter System

    OB1-S-S06 OmniFilter Undersink Water Filter System

    Fits 3/4-inch water line Learn More
    $33.05
  24. AF-10-2011 Aries Specialty Cartridge 10-inch x 2.5-inch 1 LBS KDF/GAC

    AF-10-2011 Aries Specialty Cartridge 10-inch x 2.5-inch 1 LBS KDF/GAC

    Fits standard 10 x 2.5-inch filter housings Learn More
    $31.99
  25. K5666-KK Omnipure Inline Fluoride Filter

    K5666-KK Omnipure Inline Fluoride Filter

    Fits standard 3/8-inch water lines Learn More
    $39.59 MSRP:  $53.99

Items 1 to 25 of 268 total

Page:
  1. 1
  2. 2
  3. 3
  4. 4
  5. 5

Grid  List 

Set Descending Direction
Scroll To Top