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 141 total

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

Grid  List 

Set Ascending Direction
  1. VIH-34-PR10 Pentek Whole House Valve-in-Head 10 inch Filter Housing
  2. 47-55711G2 Water Factory Systems Whole House Replacement Filter Cartridge

    47-55711G2 Water Factory Systems Whole House Replacement Filter Cartridge

    Fits 3M Cuno Water Factory FaucetMATE FM-2 Lead Plus and FM-350 DWS systems Learn More
  3. MATRIKX-5-HD10 KX Technologies MatrikX Whole House Filter Replacement Cartridge

    MATRIKX-5-HD10 KX Technologies MatrikX Whole House Filter Replacement Cartridge

    Fits any standard housing that uses 9 3/4-inch x 4 1/2-inch replacement filter cartridges Learn More
  4. W9123019 Doulton UltraCarb SI Ceramic Filter Candle

    W9123019 Doulton UltraCarb SI Ceramic Filter Candle

    Fits all Doulton Short Mount Countertop, Undersink and Inline Water Filtration Systems Learn More
    $41.00 MSRP:  $66.48
  5. HFPP-112-PR10 Pentek Big Blue Whole House 10 inch Filter Housing
  6. HFPP-34-PR-10 Pentek Big Blue Whole House 10 inch Filter Housing
  7. PCF1-20MB Pentek Whole House Filter Replacement Cartridge

    PCF1-20MB Pentek Whole House Filter Replacement Cartridge

    Fits any standard housing that uses 20-inch x 2 1/2-inch replacement filter cartridges Learn More
    $42.99 MSRP:  $49.67
  8. CBC-BB Pentek Comparable Water Filter Cartridge by Tier1

    CBC-BB Pentek Comparable Water Filter Cartridge by Tier1

    Fits filtration system housings that accepts 10 x 4.5 inch cartridges Learn More
    $42.99 MSRP:  $60.59
  9. Crystal Quest 2-7/8 in x 20 in Calcite & Coconut Shell GAC Filter Cartridge
  10. MATRIKX-5-20 KX Technologies MatrikX Whole House Filter Replacement Cartridge

    MATRIKX-5-20 KX Technologies MatrikX Whole House Filter Replacement Cartridge

    Fits any standard housing that uses 20-inch x 2 1/2-inch replacement filter cartridges Learn More
  11. DBC-10EX2 Pentek Replacement Filter Cartridge

    DBC-10EX2 Pentek Water Filter Cartridge Replacement

    Fits most Big Blue housings that accept 10-inch x 4.5-inch water filter cartridges Learn More
    $43.99 MSRP:  $57.95
  12. 22010 Hydrologic BigBoy Replacement Sediment Filter

    22010 Hydrologic BigBoy Sediment Filter

    $44.99 MSRP:  $57.49
  13. FLOPLUS-10BB Pentek Replacement Filter Cartridge

    FLOPLUS-10BB Pentek Replacement Filter Cartridge

    Fits most Big Blue housings that accept 10-inch x 4.5-inch water filter cartridges Learn More
    $44.99 MSRP:  $48.52
  14. WS-20BB Pentek Whole House Filter Replacement Cartridge

    WS-20BB Pentek Whole House Filter Replacement Cartridge

    Fits any standard housing that uses 20-inch x 4 1/2-inch filter cartridges Learn More
    $45.99 MSRP:  $52.08
  15. 150166 Pentek Whole House Filter System

    150166 Pentek Whole House Filter System

    Fits standard 3/4-inch water lines Learn More
    $46.99 MSRP:  $56.34
  16. MATRIKX-1-HD10 KX Technologies MatrikX Whole House Filter Replacement Cartridge

    MATRIKX-1-HD10 KX Technologies MatrikX Whole House Filter Replacement Cartridge

    Fits any standard housing that uses 9 3/4-inch x 4 1/2-inch replacement filter cartridges Learn More
    $47.99 MSRP:  $58.99
  17. CTO2-HD20 Hydronix Whole House Filter Replacement by Tier1
  18. MAXETW-FF20 Matrikx Whole House Filter Replacement by Tier1
  19. CQE-RC-04036 Crystal Quest Carbon Block Water Filter Cartridge Comparable by Tier1

    CQE-RC-04036 Crystal Quest Carbon Block Water Filter Cartridge Comparable by Tier1

    Fits filtration system housings that accepts 20 x 4.5 inch cartridges Learn More

    As Low As $0.00 Per Filter

  20. MATRIKX-CTO2-HD20 KX Technologies MatrikX Comparable Whole House Filter Replacement Cartridge by Tier1

    MATRIKX-CTO2-HD20 KX Technologies MatrikX Comparable Whole House Filter Replacement Cartridge by Tier1

    Fits filtration system housings that accepts 20 x 4.5 inch cartridges Learn More

    As Low As $0.00 Per Filter

  21. C2-02 Viqua Comparable Carbon Whole House Filter by Tier1

    C2-02 Viqua Comparable Carbon Whole House Filter by Tier1

    Fits filtration system housings that accepts 20 x 4.5 inch cartridges Learn More

    As Low As $0.00 Per Filter

  22. 3M Aqua-Pure AP817 Whole House Water Filter Cartridge

    AP817 3M Aqua-Pure Whole House Filter Replacement Cartridge

    Fits any brand of whole house water filter system that uses standard 9 3/4 x 4 1/2 filter cartridges Learn More
    $48.99
  23. CB-45-2010 Hydronix Replacement Filter Cartridge

    CB-45-2010 Hydronix Replacement Filter Cartridge

    Fits most Big Blue housings that accept 20-inch x 4.5-inch water filter cartridges Learn More
    $48.99 MSRP:  $58.99
  24. U25 OmniFilter Whole House Water Filter System
  25. HD-950 Culligan Whole House Filter System

Items 1 to 25 of 141 total

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

Grid  List 

Set Ascending Direction
Scroll To Top