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. AF-20-2015-BB Tier1 Aries Comparable KDF and Carbon Water Filter

    AF-20-2015-BB Tier1 Aries Comparable KDF and Carbon Water Filter

    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
    $89.99 MSRP:  $119.99
  2. 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 MSRP:  $6.99
  3. P-12 Under Sink Water Replacement Filter Cartridge by Tier1
  4. TIER1-GAC-10 Pentek Undersink Replacement Cartridge by Tier1

    TIER1-GAC-10 Pentek Undersink Replacement Cartridge by Tier1

    Fits standard 9 3/4-inch x 2 1/2-inch replacement filter cartridges. Learn More
    $12.99
  5. 155014-43 Pentek Comparable Whole House Sediment Water Filter by Tier1

    155014-43 Pentek Comparable Whole House Sediment Water Filter by Tier1

    Fits most standard 10 x 2.5-inch housings Learn More
  6. AP110 Aquapure Comparable Whole House Sediment Water Filter by Tier1

    AP110 Aquapure Comparable Whole House Sediment Water Filter by Tier1

    Fits most standard 10 x 2.5-inch housings Learn More
    $7.99 MSRP:  $14.99
  7. FXUSC GE Comparable Whole House Sediment Water Filter 2-Pack by Tier1

    FXUSC GE Comparable Whole House Sediment Water Filter by Tier1 (2-Pack)

    Fits most standard 10 x 2.5-inch housings Learn More
    $8.99 MSRP:  $12.34
  8. C1-20 Pentek Comparable Whole House Carbon Water Filter by Tier1

    C1-20 Pentek Comparable Whole House Carbon Water Filter by Tier1

    Fits most standard 20 x 2.5-inch housings Learn More
    $13.99 MSRP:  $21.99
  9. CW-F-D Culligan Comparable Whole House Water Filter 2-Pack by Tier1

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

    Fits most standard 10 x 2.5-inch housings Learn More
    $9.99 MSRP:  $12.99

    Out of stock

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

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

    Fits most standard 10 x 2.5-inch housings Learn More
    $4.99 MSRP:  $9.99
  11. 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 MSRP:  $9.99
  12. 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 MSRP:  $12.99
  13. 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 MSRP:  $10.99
  14. EPM-20 Pentek Comparable Whole House Water Filter by Tier1

    EPM-20 Pentek Comparable Whole House Water Filter by Tier1

    Fits standard 20 x 2.5-inch housings Learn More
    $11.99 MSRP:  $20.99
  15. 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
    $36.99 MSRP:  $48.99
  16. 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 MSRP:  $10.99
  17. FXWTC GE Comparable Whole House Water Filter 2-Pack by Tier1

    FXWTC GE Comparable Whole House Water Filter by Tier1 (2-Pack)

    Fits GE FXWTC, FXUSC, FXWSC and FWPC Learn More
    $11.99 MSRP:  $15.99
  18. PD-25-934 Pentek Comparable Whole House Water Filter by Tier1
  19. 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
    $4.99 MSRP:  $9.99
  20. R200 Samsung Inline Water Filter Replacement by Tier1

    R200 OmniFilter Inline Water Filter Replacement by Tier1

    Sized 2 x 6 inches and made with 1/4 inch FQC fittings Learn More

    As Low As $0.00 Per Filter

  21. EPM-BB Pentek Comparable Whole House Water Filter by Tier1 (6-Pack)

    EPM-BB Pentek Comparable Whole House Water Filter by Tier1 (6-Pack)

    Fits most standard 10-inch housings Learn More

    $96.99

  22. C1-20 Pentek Comparable Whole House Water Filter by Tier1 (2-Pack)

    C1-20 Pentek Comparable Whole House Carbon Water Filter by Tier1 (2-Pack)

    Fits most standard 20 x 2.5-inch housings Learn More

    $27.09

  23. C1-20 Pentek Comparable Whole House Water Filter by Tier1 (4-Pack)

    C1-20 Pentek Comparable Whole House Carbon Water Filter by Tier1 (4-Pack)

    Fits most standard 20 x 2.5-inch housings Learn More

    $54.99

  24. C1-20 Pentek Comparable Whole House Carbon Water Filter by Tier1

    C1-20 Pentek Comparable Whole House Carbon Water Filter by Tier1

    Fits most standard 20 x 2.5-inch housings Learn More

    As Low As $13.54 Per Filter

  25. EP10-10 Tier1 Carbon Block Water Filter

    EP10-10 Tier1 Carbon Block Water Filter

    Sized 10 x 2 7/8 inches Learn More

    As Low As $5.20 Per Filter

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