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.

Items 26 to 50 of 98 total

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  1. EP-20BB Pentek Replacement Water Filter

    EP-20BB Pentek Replacement Filter Cartridge

    Fits most Big Blue housings that accept 20-inch x 4.5-inch water filter cartridges Learn More

    As Low As $63.08 Per Filter

  2. EPM-20BB Pentek Whole House Filter Cartridge

    EPM-20BB Pentek Whole House Filter Replacement Cartridge

    Fits Pentek 20-inch Big Blue and other heavy-duty filter housings Learn More

    As Low As $43.66 Per Filter

  3. GAC20-BB Pentek Whole House Water Filter

    GAC20-BB Pentek Whole House Filter Replacement Cartridge

    Fits any heavy duty housing that uses 20-inch x 4 1/2-inch replacement filter cartridges Learn More

    As Low As $0.00 Per Filter

  4. NCP-20BB Pentek Whole House Filter Replacement

    NCP-20BB Pentek Whole House Filter Replacement Cartridge

    Fits Pentek Big Blue and most standard 20-inch heavy duty housings that use 20-inch x 4 1/2-inch replacement filter cartridges Learn More

    As Low As $33.33 Per Filter

  5. 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

  6. Tier1 P20-20BB Whole House Replacement Sediment Filter Cartridge

    P20-20BB Tier1 Whole House Replacement Sediment Filter Cartridge

    Fits most standard housings that accept 20-inch x 4.5-inch water filter cartridges Learn More

    As Low As $15.00 Per Filter

  7. ECP5-20BB Pentek Comparable Whole House Sediment Water Filter by Tier1

    ECP5-20BB Pentek Comparable Whole House Sediment Water Filter by Tier1

    Fits most 20 x 5-inch filter housings Learn More

    As Low As $14.94 Per Filter

  8. EP5-20BB Tier1 Carbon Block Water Filter

    EP5-20BB Tier1 Carbon Block Water Filter

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

    As Low As $45.83 Per Filter

  9. 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

  10. P1-20BB Sediment Water Filter by Tier1

    P1-20BB Sediment Water Filter by Tier1

    Fits in standard 20 x 4-1/2 inch sized housings Learn More

    As Low As $14.94 Per Filter

  11. S1-20BB Pentek Comparable Whole House Water Filter by Tier1

    S1-20BB Pentek Comparable Whole House Water Filter by Tier1

    Fits PENTEK S1-20BB, American Plumber W20CLHD20 and 155305 Learn More

    As Low As $15.33 Per Filter

  12. KX-MATRIKX-1-HD20 Technologies MatrikX Whole House Carbon Filter By Tier1

    KX-MATRIKX-1-HD20 Technologies MatrikX Whole House Carbon Filter By Tier1

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

    As Low As $0.00 Per Filter

  13. FLOPLUS-20BB Pentek Comparable Whole House Carbon Water Filter by Tier1

    FLOPLUS-20BB Pentek Comparable Whole House Carbon Water Filter by Tier1

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

    As Low As $0.00 Per Filter

  14. 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
  15. ECP5-20BB Pentek Comparable Whole House Sediment Water Filter by Tier1

    ECP5-20BB Pentek Comparable Whole House Sediment Water Filter by Tier1

    Fits most 20 x 5-inch filter housings Learn More

    As Low As $20.33 Per Filter

  16. SPC-45-2005 Hydronix Comparable Whole House Sediment Water Filter by Tier1

    SPC-45-2005 Hydronix Comparable Whole House Sediment Water Filter by Tier1

    Fits most 20 x 5-inch filter housings Learn More

    As Low As $0.00 Per Filter

  17. SPC-45-2010 Hydronix Comparable Whole House Sediment Water Filter by Tier1

    SPC-45-2010 Hydronix Comparable Whole House Sediment Water Filter by Tier1

    Fits most 20 x 5-inch filter housings Learn More

    As Low As $0.00 Per Filter

  18. HB-20-50W Harmsco Comparable Whole House Sediment Water Filter by Tier1

    HB-20-50W Harmsco Comparable Whole House Sediment Water Filter by Tier1

    Fits many styles of water filter housings that accept 20 x 5-inch filters Learn More

    As Low As $0.00 Per Filter

  19. SPC-45-2030 Pentek Comparable Whole House Sediment Water Filter by Tier1

    SPC-45-2030 Hydronix Comparable Whole House Sediment Water Filter by Tier1

    Fits many styles of water filter housings that accept 20 x 5-inch filters Learn More

    As Low As $0.00 Per Filter

  20. SPC-45-2050 Hydronix Comparable Whole House Sediment Water Filter by Tier1

    SPC-45-2050 Hydronix Comparable Whole House Sediment Water Filter by Tier1

    Fits many styles of water filter housings that accept 20 x 5-inch filters Learn More

    As Low As $17.83 Per Filter

  21. 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
  22. W20CLHD20 American Plumber Whole House 20-inch Heavy Duty Filter Cartridge

    W20CLHD20 American Plumber Whole House 20-inch Heavy Duty Filter Cartridge

    Fits American Plumber W2010-PR and W2015-PR and most other 20-inch heavy duty water filter housings Learn More
    $28.99 MSRP:  $35.64
  23. WRC25HD20 American Plumber Whole House 20-inch Heavy Duty Filter Cartridge

    WRC25HD20 American Plumber Whole House 20-inch Heavy Duty Filter Cartridge

    Fits American Plumber W2010-PR and W2015-PR and most other heavy duty water filter housings Learn More
    $69.99 MSRP:  $78.19
  24. 3M Aqua-Pure AP810-2 Whole House Water Filter Cartridge

    AP810-2 3M Aqua-Pure Whole House Filter Replacement Cartridge

    Fits 3M Aqua-Pure whole house water filter systems Learn More
    $52.99 MSRP:  $84.20
  25. 3M Aqua-Pure AP811-2 Whole House Water Filter

    AP811-2 3M Aqua-Pure Whole House Filter Replacement Cartridge

    Fits 3M Aqua-Pure whole house water filter systems Learn More
    $58.99 MSRP:  $66.69

Items 26 to 50 of 98 total

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