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. 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
  2. OMNIFILTER-ROR2000-S-05
  3. 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

  4. RS1-SS OmniFilter Whole House Water Filter

    RS1-SS OmniFilter Replacement Whole House Water Filter Cartridge

    Fits any brand of whole house water filter system that uses standard 9 3/4 x 2 1/2 filter cartridges Learn More

    As Low As $5.40 Per Filter

  5. TO1SS OmniFilter Whole House Water Filter

    TO1SS OmniFilter Whole House Water Filter Replacement Cartridge

    Designed to fit into any brand of whole house water filtration system that accepts standard 9 3/4 x 2 1/2 inch cartridges Learn More

    As Low As $9.67 Per Filter

  6. TO6-SS2-S06 OmniFilter Whole House Water Filter

    TO6-SS2-S06 OmniFilter Whole House Water Filter Replacement Cartridge

    Fits into any brand of whole house water filtration system that accepts filter cartridges sized 9 3/4 x 4 1/2 inches Learn More

    As Low As $21.67 Per Filter

  7. CP5-BBS-D Culligan Comparable Whole House Water Filter by Tier1

    CP5-BBS-D Culligan Comparable Whole House Sediment Water Filter by Tier1

    Fits most standard 10 x 5-inch housings Learn More

    As Low As $8.00 Per Filter

  8. SPC-45-1005 Hydronix Comparable Whole House Sediment Water Filter by Tier1

    SPC-45-1005 Hydronix Comparable Whole House Sediment Water Filter by Tier1

    Fits most standard 10 x 5-inch housings Learn More

    As Low As $10.00 Per Filter

  9. SPC-45-1010 Hydronix Comparable Whole House Sediment Water Filter by Tier1

    SPC-45-1010 Hydronix Comparable Whole House Sediment Water Filter by Tier1

    Fits most standard 10 x 5-inch housings Learn More

    As Low As $10.00 Per Filter

  10. TO6 OmniFilter Comparable Whole House Sediment Water Filter by Tier1

    TO6 OmniFilter Comparable Whole House Sediment Water Filter by Tier1

    Fits most standard 10 x 5-inch housings Learn More

    As Low As $10.00 Per Filter

  11. RS7-SS OmniFilter Comparable Whole House Sediment Water Filter by Tier1

    RS7-SS OmniFilter Comparable Whole House Sediment Water Filter by Tier1

    Fits most standard 10 x 2.5-inch housings Learn More

    As Low As $0.00 Per Filter

  12. WP-5 Pentek Comparable Replacement Filter Cartridge by Tier1

    WP-5 Pentek Comparable Replacement Filter Cartridge by Tier1

    Fits most standard 10 x 2.5-inch filter housings Learn More

    As Low As $0.00 Per Filter

  13. RS2DS OmniFilter Comparable Whole House Replacement Water Filter Cartridge by Tier1 (2-Pack)

    RS2DS OmniFilter Comparable Whole House Replacement Water Filter Cartridge by Tier1 (2-Pack)

    Fits most standard 10 x 2.5-inch housings Learn More

    As Low As $0.00 Per Filter

  14. RWC-5 Culligan Comparable Whole House Water Filter by Tier1

    RWC-5 Culligan Comparable Whole House Water Filter by Tier1

    Fits most standard 10 x 2.5-inch filter housings Learn More

    As Low As $0.00 Per Filter

  15. AMERICAN-PLUMBER-W20CLA-2PK

    AMERICAN-PLUMBER-W20CLA-2PK

    $11.99 MSRP:  $12.64
  16. W30PE American Plumber Whole House Sediment Filter Cartridge (2-Pack)

    W30PE American Plumber Whole House Sediment Filter Cartridge (2-Pack)

    Fits American Plumber W34-PR, WC34-PR and WVC34 and most standard size water filter housings Learn More
    $16.99 MSRP:  $18.04
  17. W50PE American Plumber Whole House Sediment Filter Cartridge (2-Pack)

    W50PE American Plumber Whole House Sediment Filter Cartridge (2-Pack)

    Fits American Plumber W34-PR, WC34-PR and WVC34 and most standard size water filter housings Learn More
    $16.99 MSRP:  $18.39
  18. W50W American Plumber Whole House Sediment Filter Cartridge (2-Pack)

    W50W American Plumber Whole House Sediment Filter Cartridge (2-Pack)

    Fits American Plumber W34-PR, WC34-PR and WVC34 and most standard size water filter housings Learn More
    $13.99 MSRP:  $17.34
  19. W5W American Plumber Whole House Sediment Filter Cartridge (2-Pack)

    W5W American Plumber Whole House Sediment Filter Cartridge (2-Pack)

    Fits American Plumber W34-PR, WC34-PR and WVC34 and most standard size water filter housings Learn More
    $13.99 MSRP:  $17.34
  20. RS14DS

    RS14DS

    $6.99 MSRP:  $8.15
  21. RS2-SS OmniFilter Whole House Filter Replacement Cartridge

    RS2-SS OmniFilter Whole House Water Filter Cartridge

    Fits any brand of whole house water filter system that uses standard 9 3/4 x 2 1/2 filter cartridges Learn More
    $6.99 MSRP:  $8.04
  22. RS3-SS OmniFilter Whole House Filter Replacement Cartridge

    RS3-SS OmniFilter Replacement Whole House Water Filter Cartridge

    Fits any brand of whole house water filter system that uses standard 9 3/4 x 2 1/2 filter cartridges Learn More
  23. RS7-SS OmniFilter Whole House Filter Replacement Cartridge

    RS7-SS OmniFilter Whole House Water Filter Replacement Cartridge

    Fits any brand of whole house water filtration system that uses standard 9 3/4 x 2 1/2 filter cartridges Learn More
    $6.99 MSRP:  $8.38
  24. OMNIFILTER-RS2DS

    OMNIFILTER-RS2DS

    $8.99 MSRP:  $11.03
  25. OMNIFILTER-RS3DS

    OMNIFILTER-RS3DS

    $7.99 MSRP:  $10.34

Items 1 to 25 of 29 total

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