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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  1. RS14-SS OmniFilter Whole House Water Filter

    RS14-SS OmniFilter Replacement Whole House Water Filter Cartridge

    Fits any brand of whole house water filter system that uses 9 3/4 x 2 1/2 water filter cartridges Learn More

    As Low As $6.00 Per Filter

  2. EPM-BB Pentek Comparable Whole House Water Filter by Tier1 (12-Pack)

    EPM-BB Pentek Comparable Whole House Water Filter by Tier1 (12-Pack)

    Fits most 10 x 4.5-inch filter housings Learn More

    $181.99

  3. EPM-BB Pentek Comparable Whole House Water Filter by Tier1 (4-Pack)

    EPM-BB Pentek Comparable Whole House Water Filter by Tier1 (4-Pack)

    Fits most 10 x 4.5-inch filter housings Learn More

    $67.99

  4. EPM-BB Pentek Comparable Whole House Water Filter by Tier1 (25-Pack)

    EPM-BB Pentek Comparable Whole House Water Filter by Tier1 (25-Pack)

    Fits most 10 x 4.5-inch filter housings Learn More

    (Retail Price: $397.00 ) $335.99

  5. PS5-10C Pentek Comparable Sediment Water Filter by Tier1

    PS5-10C Pentek Comparable Sediment Water Filter by Tier1

    Fits standard filter housings using 10 x 2.5-inch filters Learn More

    As Low As $3.24 Per Filter

  6. SDC-45-1010 Hydronix Comparable Sediment Water Filter by Tier1

    SDC-45-1010 Hydronix Comparable Sediment Water Filter by Tier1

    Fits standard filter housings using 10 x 4.5-inch filters Learn More

    As Low As $9.10 Per Filter

  7. SDC-25-2010 Hydronix Comparable Sediment Water Filter by Tier1

    SDC-25-2010 Hydronix Comparable Sediment Water Filter by Tier1

    Fits standard filter housings using 20 x 2.5-inch filters Learn More

    As Low As $5.84 Per Filter

  8. SDC-45-2010 Hydronix Comparable Sediment Water Filter by Tier1

    SDC-45-2010 Hydronix Comparable Sediment Water Filter by Tier1

    Fits standard filter housings using 20 x 4.5-inch filters Learn More

    As Low As $13.00 Per Filter

  9. PB1-HD20 KX Matrikx Comparable Whole House Carbon Water Filter by Tier1

    PB1-HD20 KX Matrikx Comparable Whole House Carbon Water Filter by Tier1

    Fits water filtration systems that accept 20 x 4.5 inch cartridges, including the #20 Big Blue and Big Boy housings by Pentek Learn More
  10. 22070 Hydrologic Comparable Whole House Carbon Filter by Tier1

    22070 Hydrologic Comparable Whole House Carbon Filter by Tier1

    Sized at 10 x 4.5 inches, this filter will fit into all #10 Big Blue filtration system housings Learn More

    As Low As $0.00 Per Filter

  11. 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

    As Low As $0.00 Per Filter

  12. EPM-BB Pentek Comparable Whole House Water Filter by Tier1

    EPM-BB Pentek Comparable Whole House Water Filter by Tier1

    Fits most 10 x 4.5-inch filter housings Learn More

    As Low As $0.00 Per Filter

  13. WHKF-WHSW Whirlpool Comparable Whole House Replacement Sediment Filter Cartridge by Tier1 (2-Pack)

    WHKF-WHSW Whirlpool Comparable Whole House Replacement Sediment Filter Cartridge by Tier1 (2-Pack)

    Fits most standard 10 x 2.5-inch housings Learn More

    As Low As $0.00 Per Filter

  14. RFC-20 Pentek Comparable Whole House Filter Replacement Cartridge by Tier1

    RFC-20 Pentek Comparable Whole House Filter Replacement Cartridge by Tier1

    Fits standard 20 x 2.5-inch housings Learn More

    As Low As $0.00 Per Filter

  15. RS2DS OmniFilter Comparable Whole House Replacement Water Filter Cartridge by Tier1 (2-Pack)

    RS2DS OmniFilter Comparable Whole House Replacement Water Filter Cartridge by Tier1 (2-Pack)

    Fits most standard 10 x 2.5-inch housings Learn More

    As Low As $0.00 Per Filter

  16. CB-25-2010 Hydronix Comparable Replacement Filter Cartridge by Tier1

    CB-25-2010 Hydronix Comparable Replacement Filter Cartridge by Tier1

    Fits standard 20 x 2.5-inch housings Learn More

    As Low As $0.00 Per Filter

  17. W5W American Plumber Comparable Whole House Sediment Filter Cartridge by Tier1 (2-Pack)

    W5W American Plumber Comparable Whole House Sediment Filter Cartridge by Tier1 (2-Pack)

    Fits most standard 10 x 2.5-inch housings Learn More

    As Low As $0.00 Per Filter

  18. Hydronix SDC-25-3010 Polypropylene Sediment Filter

    Hydronix SDC-25-3010 Polypropylene Sediment Filter

    Standard 30 inch by 2.5 inch size fits many standard size filter housings Learn More
    $8.99 MSRP:  $13.79
  19. Hydronix SDC-25-4010 Polypropylene Sediment Filter

    Hydronix SDC-25-4010 Polypropylene Sediment Filter

    Standard 40 inch by 2.5 inch size fits many standard size filter housings Learn More
    $12.99 MSRP:  $14.34
  20. Pentek KE10G2S Polyester Filter Bag

    Pentek KE10G2S Polyester Filter Bag

    Standard #2 size with 7 inch diameter by 32 inch length fits many common bag filter housings Learn More
    $9.99
  21. Pentek KO10G2S Polyester Filter Bag

    Pentek KO10G2S Polyester Filter Bag

    Standard #2 size with 7 inch diameter by 32 inch length fits many common bag filter housings Learn More
    $7.19 MSRP:  $10.99
  22. Pentek PD-10-30 Polypropylene Sediment Filter

    Pentek PD-10-30 Polypropylene Sediment Filter

    Standard 30 inch by 2.5 inch size and double open end design fits many common filter housings Learn More
    $19.99 MSRP:  $22.34
  23. CW-F-D Culligan Level 3 Whole House Filter Replacement Cartridge (2-Pack)

    CW-F-D Culligan Level 3 Whole House Filter Replacement Cartridge (2-Pack)

    Fits Culligan HF-150, HF-160, HF-360, HF-365, and any brand of whole house water filter system that uses standard 9 3/4 x 2 1/2 filter cartridges Learn More
    $13.99 MSRP:  $17.34
  24. W9240002 Doulton Specialty Replacement Filter Cartridge

    W9240002 Doulton Specialty Replacement Water Filter Cartridge

    Fits pressurized Doulton HIP2 Duo and HIP3 Triple housing systems Learn More
    $20.00 MSRP:  $24.99
  25. FXWF-1000 EcoWater Reverse Osmosis Filter Cartridge

Items 26 to 50 of 102 total

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