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. C2-02 Advanced Water Products 20-inch x 4.5-inch Replacement Carbon Whole House Filter

    C2-02 Advanced Water Products Replacement 20-inch x 4.5-inch Carbon Whole House Filter

    Fits most 20-inch x 4.5-inch filter housings, including the Trojan UV Max IHS12-D4 and IHS22-D4 Water Disinfection Systems Learn More
  2. C2-02 Viqua Carbon Whole House Filter

    C2-02 Viqua Carbon Whole House Filter

    Fits most 20 x 4.5-inch filter housings including the Viqua IHS12-D4 and IHS22-D4 water disinfection systems. Learn More
    $49.99 MSRP:  $89.00
  3. SDC-45-2010 Hydronix Water Filter Cartridge

    SDC-45-2010 Hydronix Sediment Water Filter Cartridge

    10 micron filter fits into water filtration systems that use 20-inch x 4.5-inch filter replacements Learn More

    As Low As $19.16 Per Filter

  4. SPC-45-2020 Hydronix Pleated Sediment Water Filter (20 in x 4.5 in, 20 Micron)

    SPC-45-2020 Hydronix Pleated Sediment Water Filter (20 in x 4.5 in, 20 Micron)

    Fits into systems that use the Liquatec SPF-45-2020, Pentek 255495-43 and Watts FM-BB-20-20 water filters Learn More

    As Low As $23.33 Per Filter

  5. SPC-45-2050 Hydronix Pleated Sediment Water Filter

    SPC-45-2050 Hydronix Pleated Sediment Water Filter (20 in x 4.5 in, 50 Micron)

    Fits into systems that use the Liquatec SPF-45-2050, Pentek 255496-43 and Watts FM-BB-50-20 water filters Learn More

    As Low As $21.67 Per Filter

  6. P5-20BB Tier1 Sediment Water Filter

    P5-20BB Tier1 Whole House Sediment Water Filter

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

    As Low As $14.33 Per Filter

  7. HB-20-20W Harmsco Comparable Whole House Sediment Water Filter by Tier1 (alternate)

    HB-20-20W Harmsco Comparable Whole House Sediment Water Filter by Tier1

    Fits into systems that use the Liquatec SPF-45-2020, Pentek 255495-43 and Watts FM-BB-20-20 water filters Learn More

    As Low As $0.00 Per Filter

  8. 22010 Hydrologic Comparable Whole House Water Filter by Tier1

    22010 Hydrologic Comparable Whole House Water Filter by Tier1

    Fits into systems that use the Liquatec SPF-45-2020, Pentek 255495-43 and Watts FM-BB-20-20 water filters Learn More

    As Low As $0.00 Per Filter

  9. SPC-45-2020 Hydronix Comparable Whole House Water Filter by Tier1 (alternate)

    SPC-45-2020 Hydronix Comparable Whole House Water Filter by Tier1

    Fits into systems that use the Liquatec SPF-45-2020, Pentek 255495-43 and Watts FM-BB-20-20 water filters Learn More

    As Low As $0.00 Per Filter

  10. SPC-25-2030 Hydronix Comparable Sediment Water Filter by Tier1

    SPC-25-2030 Hydronix Comparable Sediment Water Filter by Tier1

    30 micron filter, sized 20 x 2.5 inches Learn More
    $11.99 MSRP:  $23.99
  11. SPC-45-2001 Hydronix Comparable Pleated Sediment Water Filter by Tier1

    SPC-45-2001 Hydronix Comparable Pleated Sediment Water Filter by Tier1

    Fits water filtration systems that use the Liquatec SPF-45-2001, Pentek 255493-43 and Watts FM-BB-20-1 filters Learn More
    $24.99 MSRP:  $38.99
  12. SPC-45-2020 Hydronix Comparable Pleated Sediment Water Filter (20 in x 4.5 in, 20 Micron) by Tier1

    SPC-45-2020 Hydronix Comparable Pleated Sediment Water Filter (20 in x 4.5 in) by Tier1

    Fits into systems that use the Liquatec SPF-45-2020, Pentek 255495-43 and Watts FM-BB-20-20 water filters Learn More
    $18.99 MSRP:  $32.99
  13. SWC-45-2001 Hydronix Comparable String-Wound Sediment Water Filter by Tier1

    SWC-45-2001 Hydronix Comparable String-Wound Sediment Water Filter by Tier1

    20 inches by 4.5 inches, 1 micron. Fits into Big Blue water filtration housings systems that use Liquatec SWF-45-2001, Pentek: 355222-43 and Watts SF1-20-425 water filters Learn More
    $22.99 MSRP:  $35.99
  14. SWC-45-2005 Hydronix Comparable String-Wound Sediment Water Filter by Tier1

    SWC-45-2005 Hydronix Comparable String-Wound Sediment Water Filter by Tier1

    20 inches by 4.5 inches, 5 micron. Fits into most 20-inch Big Blue water filtration housings and replaces Liquatec SWF-45-2005, Pentek 355223-43 and Watts SF5-20-425 water filters Learn More
    $27.99 MSRP:  $40.99
  15. SPC-25-2030 Hydronix Comparable Sediment Water Filter by Tier1

    SPC-25-2030 Hydronix Comparable Sediment Water Filter by Tier1

    30 micron filter, sized 20 x 2.5 inches Learn More

    As Low As $0.00 Per Filter

  16. SPC-25-2050 Hydronix Comparable Sediment Water Filter by Tier1

    SPC-25-2050 Hydronix Comparable Sediment Water Filter by Tier1

    30 micron filter, sized 20 x 2.5 inches Learn More

    As Low As $0.00 Per Filter

  17. R30-20 Pentek Comparable Sediment Water Filter by Tier1

    R30-20 Pentek Comparable Sediment Water Filter by Tier1

    30 micron filter, sized 20 x 2.5 inches Learn More

    As Low As $0.00 Per Filter

  18. SPC-45-2001 Hydronix Comparable Pleated Sediment Water Filter by Tier1

    SPC-45-2001 Hydronix Comparable Pleated Sediment Water Filter by Tier1

    Fits water filtration systems that use the Liquatec SPF-45-2001, Pentek 255493-43 and Watts FM-BB-20-1 filters Learn More

    As Low As $0.00 Per Filter

  19. FM-BB-20-1A Flow Max Comparable Pleated Sediment Water Filter by Tier1

    FM-BB-20-1A Flow Max Comparable Pleated Sediment Water Filter by Tier1

    Fits water filtration systems that use the Liquatec SPF-45-2001, Pentek 255493-43 and Watts FM-BB-20-1 filters Learn More

    As Low As $0.00 Per Filter

  20. HB-20-1W Harmsco Comparable Pleated Sediment Water Filter by Tier1

    HB-20-1W Harmsco Comparable Pleated Sediment Water Filter by Tier1

    Fits water filtration systems that use the Liquatec SPF-45-2001, Pentek 255493-43 and Watts FM-BB-20-1 filters Learn More

    As Low As $0.00 Per Filter

  21. SWC-45-2001 Hydronix Comparable String-Wound Sediment Water Filter by Tier1

    SWC-45-2001 Hydronix Comparable String-Wound Sediment Water Filter by Tier1

    20 inches by 4.5 inches, 1 micron. Fits into Big Blue water filtration housings systems that use Liquatec SWF-45-2001, Pentek: 355222-43 and Watts SF1-20-425 water filters Learn More

    As Low As $0.00 Per Filter

  22. WP1BB20P Pentek Comparable String-Wound Sediment Water Filter by Tier1

    WP1BB20P Pentek Comparable String-Wound Sediment Water Filter by Tier1

    20 inches by 4.5 inches, 1 micron. Fits into Big Blue water filtration housings systems that use Liquatec SWF-45-2001, Pentek: 355222-43 and Watts SF1-20-425 water filters Learn More

    As Low As $0.00 Per Filter

  23. SWC-45-2005 Hydronix Comparable String-Wound Sediment Water Filter by Tier1

    SWC-45-2005 Hydronix Comparable String-Wound Sediment Water Filter by Tier1

    20 inches by 4.5 inches, 5 micron. Fits into most 20-inch Big Blue water filtration housings and replaces Liquatec SWF-45-2005, Pentek 355223-43 and Watts SF5-20-425 water filters Learn More

    As Low As $0.00 Per Filter

  24. WP5BB20P Pentek Comparable String-Wound Sediment Water Filter by Tier1

    WP5BB20P Pentek Comparable String-Wound Sediment Water Filter by Tier1

    20 inches by 4.5 inches, 5 micron. Fits into most 20-inch Big Blue water filtration housings and replaces Liquatec SWF-45-2005, Pentek 355223-43 and Watts SF5-20-425 water filters Learn More

    As Low As $0.00 Per Filter

  25. Pentek 166141 Big White 20-inch Filter Housing

    Pentek 166141 Big White 20-inch Filter Housing

    Receives any standard 20 inch by 4.5 inch filter cartridge Learn More
    $39.95 MSRP:  $58.64

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