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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 1 to 25 of 279 total

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  1. P5-20 Tier1 Sediment Water Filter

    P5-20 Tier1 Whole House Sediment Water Filter

    Sized 20 x 2.5 inches Learn More

    As Low As $4.48 Per Filter

  2. 002045 Viqua Replacement O-Ring

    002045 Viqua Replacement O-Ring

    $2.99 Retail Price:  $5.34
  3. 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
    $3.99 Retail Price:  $6.99
  4. 155014-43 Pentek Comparable Whole House Sediment Water Filter by Tier1
  5. PD-25-934 Pentek Comparable Whole House Water Filter by Tier1
  6. RS2SS OmniFilter Comparable Whole House Water Filter by Tier1

    RS2SS OmniFilter Comparable Whole House Water Filter by Tier1

    Fits most standard 10 x 2.5-inch filter housings Learn More
    $3.99 Retail Price:  $9.99
  7. P1 Pentek 10 x 2.5-inch Whole House Sediment Water Filter Replacement

    P1 Pentek Comparable Whole House Sediment Water Filter by Tier1

    Fits most standard 10 x 2.5-inch housings Learn More

    As Low As $2.39 Per Filter

  8. P5-10 Tier1 Sediment Water Filter

    P5-10 Tier1 Sediment Water Filter

    Fits into most industry standard 10-inch water filtration system housings Learn More

    As Low As $3.00 Per Filter

  9. P5-478 Pentek Sediment Water Filter

    P5-478 Pentek Comparable Sediment Water Filter by Tier1

    Fits standard filter housings using 5 x 2.5-inch filters Learn More

    As Low As $3.16 Per Filter

  10. 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

  11. CW-MF Pentek Comparable Whole House Sediment Water Filter by Tier1

    CW-MF Pentek Comparable Whole House Sediment Water Filter by Tier1

    Fits most standard 10 x 2.5-inch housings Learn More
  12. CW-50 Pentek Comparable Whole House Sediment Water Filter by Tier1

    CW-50 Pentek Comparable Whole House Sediment Water Filter by Tier1

    Fits most standard 10 x 2.5-inch housings Learn More
    $4.99 Retail Price:  $9.99
  13. 155016-43 Pentek Comparable Whole House Water Filter by Tier1

    155016-43 Pentek Comparable Whole House Water Filter by Tier1

    Fits standard 20-inch by 2.5-inch filter housings Learn More
  14. P20 Pentek 10 x 2.5-inch Comparable Whole House Sediment Water Filter

    P20 Pentek Comparable Whole House Sediment Water Filter by Tier1

    Fits most standard 10 x 2.5-inch housings Learn More

    As Low As $4.50 Per Filter

  15. My K-Cup Keurig Comparable Replacement Coffee Filter Set by Tier1 (3-Piece Set)

    My K-Cup Keurig Comparable Replacement Coffee Filter Set by Tier1

    Fits Keurig Double Digit Model Systems B30, B40, B50, B60 and B70 Learn More
    $4.99 Retail Price:  $10.99
  16. K-Cup Holder Keurig Single Serve Coffee Filter Comparable by Tier1 (6-Pack)

    K-Cup Holder Keurig Single Serve Coffee Filter Comparable by Tier1 (2-Pack)

    Fits in Keurig Coffee Makers Learn More
    $4.99 Retail Price:  $10.99
  17. EP5-10 Tier1 Carbon Block Water Filter

    EP5-10 Tier1 Carbon Block Water Filter

    Fits into most industry standard 10-inch water filtration system housings Learn More

    As Low As $3.82 Per Filter

  18. PX05-9-78 Purtrex Replacement Water Filter

    PX05-9-78 Purtrex Replacement Water Filter

    For use in compact filtration system housings that use 2.5 x 10 inch filters Learn More

    As Low As $4.56 Per Filter

  19. S1A-D Culligan Comparable Whole House Sediment Water Filter 2-Pack by Tier1

    S1A-D Culligan Comparable Whole House Sediment Water Filter by Tier1(2-Pack)

    Fits most standard 10 x 2.5-inch housings Learn More
    $5.99 Retail Price:  $12.99
  20. RS1SS OmniFilter Comparable Whole House Water Filter by Tier1

    RS1SS OmniFilter Comparable Whole House Water Filter by Tier1

    Fits OmniFilter RS1-SS and GE FXWPC Learn More
    $5.99 Retail Price:  $10.99
  21. DCC-RWF Cuisinart Comparable Replacement Coffee Water Filter by Tier1 (6-Pack)

    DCC-RWF Cuisinart Comparable Replacement Coffee Water Filter by Tier1 (6-Pack)

    Fits select Cuisinart coffee makers Learn More
    $5.99 Retail Price:  $11.99
  22. Drinkwell PAC00-13711 Pet Fountain Foam Filter (2-Pack)

    Drinkwell PAC00-13711 Pet Fountain Foam Filter (2-Pack)

    Fits Drinkwell Pet Fountains: Stainless Steel 360, Lotus, Avalon, and Pagoda Learn More
    $5.99 Retail Price:  $8.99
  23. 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

  24. P1-20 Pentek Comparable Sediment Water Filter by Tier1

    P1-20 Pentek Comparable Sediment Water Filter by Tier1

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

    As Low As $4.54 Per Filter

  25. W20CLA American Plumber Comparable Whole House Water Filter by Tier1

    W20CLA American Plumber Comparable Whole House Water Filter by Tier1 (2-Pack)

    Standard 10 inch by 2.5 inch size fits many standard size filter housings Learn More
    $6.99 Retail Price:  $10.99

Items 1 to 25 of 279 total

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