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. Pentek P1-20 Whole House Water Filter Replacement Cartridge

    Pentek P1-20 Sediment Whole House Filter Replacement Cartridge

    Fits any standard housing that uses 20-inch x 2 1/2-inch replacement filter cartridges Learn More

    As Low As $9.75 Per Filter

  2. SWC-45-1001 Comparable Hydronix String-Wound Sediment Water Filter by Tier1

    SWC-45-1001 Comparable Hydronix String-Wound Sediment Water Filter by Tier1

    10 inches by 4.5 inches, 1 micron. Fits most 10-inch Big Blue filter housings and replaces Liquatec SWF-45-1001, Pentek 355213-43 and Watts SF1-10-425 water filters. Learn More
    $12.99 MSRP:  $24.99
  3. SPC-25-2001 Hydronix Comparable Pleated Sediment Water Filter by Tier1

    SPC-25-2001 Hydronix Comparable Pleated Sediment Water Filter by Tier1

    20 inches by 2.5 inches, 1 micron. Built to replace Liquatec SPF-25-2001, Pentek 255485-43 and Watts FM-1-20 water filters Learn More
    $12.99 MSRP:  $25.99
  4. SWC-45-1001 Comparable Hydronix String-Wound Sediment Water Filter by Tier1

    SWC-45-1001 Comparable Hydronix String-Wound Sediment Water Filter by Tier1

    10 inches by 4.5 inches, 1 micron. Fits most 10-inch Big Blue filter housings and replaces Liquatec SWF-45-1001, Pentek 355213-43 and Watts SF1-10-425 water filters. Learn More

    As Low As $0.00 Per Filter

  5. SWC-45-1005 Hydronix Comparable String-Wound Sediment Water Filter by Tier1

    SWC-45-1005 Hydronix Comparable String-Wound Sediment Water Filter by Tier1

    10 inches by 4.5 inches, 1 micron. Fits most 10-inch Big Blue filter housings and replaces Liquatec SWF-45-1001, Pentek 355213-43 and Watts SF1-10-425 water filters. Learn More

    As Low As $0.00 Per Filter

  6. SWC-45-1010 Hydronix Comparable String-Wound Sediment Water Filter by Tier1

    SWC-45-1010 Hydronix Comparable String-Wound Sediment Water Filter by Tier1

    10 inches by 4.5 inches, 1 micron. Fits most 10-inch Big Blue filter housings and replaces Liquatec SWF-45-1001, Pentek 355213-43 and Watts SF1-10-425 water filters. Learn More

    As Low As $0.00 Per Filter

  7. WP10BB97P Pentek Comparable String-Wound Sediment Water Filter by Tier1

    WP10BB97P Pentek Comparable String-Wound Sediment Water Filter by Tier1

    10 inches by 4.5 inches, 1 micron. Fits most 10-inch Big Blue filter housings and replaces Liquatec SWF-45-1001, Pentek 355213-43 and Watts SF1-10-425 water filters. Learn More

    As Low As $0.00 Per Filter

  8. WP5BB97P Pentek Comparable String-Wound Sediment Water Filter by Tier1

    WP5BB97P Pentek Comparable String-Wound Sediment Water Filter by Tier1

    10 inches by 4.5 inches, 1 micron. Fits most 10-inch Big Blue filter housings and replaces Liquatec SWF-45-1001, Pentek 355213-43 and Watts SF1-10-425 water filters. Learn More

    As Low As $0.00 Per Filter

  9. WPX10BB97P Pentek Comparable String-Wound Sediment Water Filter by Tier1

    WPX10BB97P Pentek Comparable String-Wound Sediment Water Filter by Tier1

    10 inches by 4.5 inches, 1 micron. Fits most 10-inch Big Blue filter housings and replaces Liquatec SWF-45-1001, Pentek 355213-43 and Watts SF1-10-425 water filters. Learn More

    As Low As $0.00 Per Filter

  10. WPX5BB97P Pentek Comparable String-Wound Sediment Water Filter by Tier1

    WPX5BB97P Pentek Comparable String-Wound Sediment Water Filter by Tier1

    10 inches by 4.5 inches, 1 micron. Fits most 10-inch Big Blue filter housings and replaces Liquatec SWF-45-1001, Pentek 355213-43 and Watts SF1-10-425 water filters. Learn More

    As Low As $0.00 Per Filter

  11. SPC-25-2001 Hydronix Comparable Pleated Sediment Water Filter by Tier1

    SPC-25-2001 Hydronix Comparable Pleated Sediment Water Filter by Tier1

    20 inches by 2.5 inches, 1 micron. Built to replace Liquatec SPF-25-2001, Pentek 255485-43 and Watts FM-1-20 water filters Learn More

    As Low As $0.00 Per Filter

  12. DGD-2501 Pentek Whole House Water Filter

    Pentek DGD-2501 Whole House Water Filter Replacement Cartridge

    Fits Pentek Big Blue and other heavy-duty filter housings Learn More

    As Low As $9.60 Per Filter

  13. CB1-10 Pentek Carbon Block Water Filter Replacement

    CB1-10 Pentek Carbon Block Water Filter Replacement

    Fits most standard 10-inch x 2.5-inch housings Learn More
    $15.39 MSRP:  $23.99
  14. Pentek ECP1-BB Replacement Water Filter Cartridge

    Pentek ECP1-BB Water Filter Cartridge Replacement

    Fits most Big Blue housings that accept 10-inch x 4.5-inch water filter cartridges Learn More

    As Low As $12.83 Per Filter

  15. TIER1-DGD1-20BB Whole House Sediment Water Filter

    DGD-2501-20 Pentek Comparable Whole House Sediment Water Filter by Tier1

    Fits most standard 20 x 5-inch housings Learn More
    $18.99 MSRP:  $24.99
  16. Pentek CHLORPLUS-10 Whole House Water Filter Replacement Cartridge

    Pentek ChlorPlus-10 Whole House Carbon Block Water Filter Replacement Cartridge

    Fits any standard housing that uses 9 3/4-inch x 2 1/2-inch replacement filter cartridges Learn More

    As Low As $18.00 Per Filter

  17. Pentek PD-1-30 Polypropylene Sediment Filter

    Pentek PD-1-30 Polypropylene Sediment Filter

    Standard 30 inch by 2.5 inch size and double open end design fits many common filter housings Learn More
    $14.99
  18. Pentek KO1HE3 Polypropylene High Efficiency Filter Bag

    Pentek KO1HE3 Polypropylene High Efficiency Filter Bag

    Standard #3 size with 4.125 inch diameter and 8 inch length. Fits many standard filter bag housings Learn More
    $16.99 MSRP:  $19.34
  19. BPHE-420-1 Pentek Polypropylene High Efficiency Bag Filter

    BPHE-420-1 Pentek Polypropylene High Efficiency Bag Filter

    Fits Pentek PBH-420 filtration system housings Learn More
    $11.99 MSRP:  $16.55
  20. C8 Pentek Whole House Replacement Filter Cartridge

    C8 Pentek Whole House Replacement Filter Cartridge

    Fits most housings that accept 10-inch x 2.5-inch water filter cartridges Learn More
    $12.99
  21. SDC-45-1001 Hydronix Whole House Replacement Sediment Filter Cartridge

    SDC-45-1001 Hydronix Whole House Replacement Sediment Filter Cartridge

    Fits most Big Blue housings that accept 10-inch x 4.5-inch water filter cartridges Learn More
    $13.99 MSRP:  $17.34
  22. P1-30 Pentek Whole House Replacement Sediment Filter Cartridge

    P1-30 Pentek Whole House Sediment Water Filter

    Fits most water filtration system housings that accept standard 30-inch x 2.5-inch filter cartridges Learn More
    $13.99 MSRP:  $14.13
  23. ECP1-20 Pentek Replacement Filter Cartridge

    ECP1-20 Pentek Replacement Filter Cartridge

    Fits most housings that accept 20-inch x 2.5-inch water filter cartridges Learn More
    $15.99 MSRP:  $17.70
  24. WP1BB97P Pentek Replacement Filter Cartridge

    WP1BB97P Pentek Replacement Filter Cartridge

    Fits most Big Blue housings that accept 10-inch x 4.5-inch water filter cartridges Learn More
    $17.99
  25. SWC-45-1001 Hydronix String-Wound Sediment Water Filter

    SWC-45-1001 Hydronix String-Wound Sediment Water Filter

    10 inches by 4.5 inches, 1 micron. Fits most 10-inch Big Blue filter housings and replaces Liquatec SWF-45-1001, Pentek 355213-43 and Watts SF1-10-425 water filters. Learn More
    $17.99 MSRP:  $18.39

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