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. Replacement Brand FXHSC Pleated Cellulose Sediment Water Filter (side)

    Pentek R30-BB ReplacementBrand FXHSC Comparable Whole House Water Filter

    Fits in standard sized housings that take 10 x 4-1/2 inch replacement filters Learn More
    $10.00
  2. NCP-BB Pentek Whole House Water Filter
  3. W5CIP American Plumber Whole House Carbon Water Filter by Tier1
  4. C1 Pentek Comparable Whole House Carbon Water Filter by Tier1

    C1 Pentek Comparable Whole House Carbon Water Filter by Tier1

    Fits GE FXWTC, FXUSC, FXWSC and FWPC Learn More
  5. P-250 Pentek Comparable Under Sink Water Filter Set by Tier1

    P-250 Pentek Comparable Under Sink Water Filter Set by Tier1

    Fits various brands of under-sink housings, including Culligan, Pentek, Ametek and American Plumber Learn More

    As Low As $0.00 Per Filter

  6. P-250A Pentek Comparable Under Sink Filter Set by Tier1

    P-250A Pentek Comparable Under Sink Filter Set by Tier1

    Fits various brands of under-sink housings, including Culligan, Pentek, Ametek and American Plumber Learn More

    As Low As $0.00 Per Filter

  7. WHKF-DB1 Whirlpool Comparable Under Sink Water Filter by Tier1

    WHKF-DB1 Whirlpool Comparable Under Sink Water Filter by Tier1

    Fits various brands of under-sink housings, including Culligan, Pentek, Ametek and American Plumber Learn More

    As Low As $0.00 Per Filter

  8. GS-10ALS-JG14 Pentek Comparable Inline Water Filter by Tier1

    GS-10ALS-JG14 Pentek Comparable Inline Water Filter by Tier1

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

    As Low As $0.00 Per Filter

  9. GS-10-JG14 Pentek Comparable Inline Water Filter by Tier1

    GS-10-JG14 Pentek Comparable Inline Water Filter by Tier1

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

    As Low As $0.00 Per Filter

  10. Omnifilter CB3 Comparable Carbon Block Whole House Water Filter by Tier1

    Omnifilter CB3 Comparable Carbon Block Whole House Water Filter by Tier1

    Fits the OmniFilter U30 Filter Housing. Learn More
    $11.99 MSRP:  $36.99
  11. CBR2-10 Pentek Comparable Carbon Block Whole House Water Filter by Tier1

    CBR2-10 Pentek Comparable Carbon Block Whole House Water Filter by Tier1

    Fits standard sized housings that take 10 x 2-1/2 inch replacement filters Learn More

    As Low As $0.00 Per Filter

  12. Floplus 10 Pentek Comparable Carbon Block Whole House Water Filter by Tier1

    Floplus 10 Pentek Comparable Carbon Block Whole House Water Filter by Tier1

    Fits standard sized housings that take 10 x 2-1/2 inch replacement filters Learn More

    As Low As $0.00 Per Filter

  13. D-30 Culligan Comparable Carbon Block Whole House Water Filter by Tier1

    D-30 Culligan Comparable Carbon Block Whole House Water Filter by Tier1

    Fits standard sized housings that take 10 x 2-1/2 inch replacement filters Learn More

    As Low As $0.00 Per Filter

  14. CBR2-10R Pentek Comparable Carbon Block Whole House Water Filter by Tier1

    CBR2-10R Pentek Comparable Carbon Block Whole House Water Filter by Tier1

    Fits standard sized housings that take 10 x 2-1/2 inch replacement filters Learn More

    As Low As $0.00 Per Filter

  15. FXULC GE SmartWater Comparable Undersink Filter Replacement Cartridge by Tier1

    FXULC GE SmartWater Comparable Undersink Filter Replacement Cartridge by Tier1

    Fits standard sized housings that take 10 x 2-1/2 inch replacement filters Learn More

    As Low As $0.00 Per Filter

  16. CHLORPLUS-10 Pentek Comparable Whole House Water Filter by Tier1

    CHLORPLUS-10 Pentek Comparable Whole House Water Filter by Tier1

    Fits standard sized housings that take 10 x 2-1/2 inch replacement filters Learn More

    As Low As $0.00 Per Filter

  17. D-40 Culligan Comparable Undersink Water Filter Replacement Cartridge by Tier1

    D-40 Culligan Comparable Undersink Water Filter Replacement Cartridge by Tier1

    Fits standard sized housings that take 10 x 2-1/2 inch replacement filters Learn More

    As Low As $0.00 Per Filter

  18. CB1-SS6-S06 OmniFilter Comparable Undersink Water Filter Cartridge by Tier1

    CB1-SS6-S06 OmniFilter Comparable Undersink Water Filter Cartridge by Tier1

    Fits standard sized housings that take 10 x 2-1/2 inch replacement filters Learn More

    As Low As $0.00 Per Filter

  19. MAXETW-975 Watts Comparable C-MAX Replacement Water Filter Cartridge by Tier1

    MAXETW-975 Watts Comparable C-MAX Replacement Water Filter Cartridge by Tier1

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

    As Low As $0.00 Per Filter

  20. CB3-SS6-06 OmniFilter Comparable Undersink Filter Replacement Cartridge by Tier1

    CB3-SS6-06 OmniFilter Comparable Undersink Filter Replacement Cartridge by Tier1

    Fits standard sized housings that take 10 x 2-1/2 inch replacement filters Learn More

    As Low As $0.00 Per Filter

  21. FXUTC GE SmartWater Comparable Undersink Filter Replacement Cartridge by Tier1

    FXUTC GE SmartWater Comparable Undersink Filter Replacement Cartridge by Tier1

    Fits standard sized housings that take 10 x 2-1/2 inch replacement filters Learn More

    As Low As $0.00 Per Filter

  22. FX12P GE SmartWater Comparable Reverse Osmosis Filter by Tier1

    FX12P GE SmartWater Comparable Reverse Osmosis Filter by Tier1

    Fits GE SmartWater reverse osmosis filter systems with model numbers starting with PNRV12, GXRV10, or GXRM10 Learn More

    As Low As $11.99 Per Filter

  23. GS-10-B Pentek Inline Filter Replacement Cartridge

    GS-10-B Pentek Replacement Inline Water Filter Cartridge

    For 1/4-inch water lines Learn More
    $11.09 MSRP:  $16.99
  24. GS-10-JG14 Pentek Inline Filter System

    GS-10-JG14 Pentek Inline Water Filtration System

    Fits onto all 1/4-inch water lines Learn More
    $12.99 MSRP:  $15.28
  25. PENTEK-P-250A

    PENTEK-P-250A

    $33.99

Items 1 to 25 of 31 total

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