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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 Aries Comparable Sediment Water Filter by Tier1

    AF-20-2015 Aries Comparable Polypropylene Sediment 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

    Regular Price: $66.99

    Special Price: $35.05

  2. AF-10-2210 Aries Comparable Sediment Water Filter by Tier1

    AF-10-2210 Aries Comparable Sediment Water Filter by Tier1

    Fits standard number 10, slim-line number 10, and other filter housings using 10 x 2.5-inch filters Learn More
    $37.99 Retail Price:  $56.39
  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
    $4.99 Retail Price:  $6.99
  4. SDC-45-1010 Hydronix Comparable Sediment Water Filter by Tier1

    SDC-45-1010 Hydronix Comparable Sediment Water Filter by Tier1

    Fits standard filter housings using 10 x 4.5-inch filters Learn More
    $14.99 Retail Price:  $15.59
  5. SDC-25-2010 Hydronix Comparable Sediment Water Filter by Tier1

    SDC-25-2010 Hydronix Comparable Sediment Water Filter by Tier1

    Fits standard filter housings using 20 x 2.5-inch filters Learn More
  6. 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 2.5-inch filters Learn More
    $19.99 Retail Price:  $32.99
  7. CW-F-D Culligan Comparable Whole House Water Filter 2-Pack by Tier1
  8. 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
    $12.99 Retail Price:  $20.99
  9. EPM-BB Pentek Comparable Whole House Water Filter by Tier1

    EPM-BB Pentek Comparable Whole House Water Filter by Tier1

    Fits most 10 x 4.5-inch filter housings Learn More
    $18.99 Retail Price:  $30.99
  10. 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
    $43.99 Retail Price:  $47.99
  11. AP-GRMB-10PP-20UB Whole House Replacement Cartridge by 3M Aqua-Pure

    AP-GRMB-10PP-20UB Whole House Replacement Filter by 3M Aqua-Pure

    Fits most standard 20-inch x 2.5-inch housings Learn More
    $11.99 Retail Price:  $14.34
  12. AP-GRMB-10PP-10UB Whole House Water Filter Replacement Cartridge

    3M Aqua-Pure AP-GRMB-10PP-10 Whole House Water Filter Replacement

    Fits most standard 10 inch x 2 1/2 inch housings Learn More
    $7.99 Retail Price:  $10.34
  13. WFPF13003B DuPont Universal Whole House Filtration System

    WFPF13003B DuPont Universal Whole House Filtration System

    For use with DuPont WFPFC whole house filter cartridges Learn More
  14. APRC1-P Aquapatrol Ice Machine Replacement Water Filter

    APRC1-P AquaPatrol Ice Machine Replacement Water Filter

    Fits the Scotsman ADS-AP1 AquaPatrol Water Filtration System Learn More
    $61.99 Retail Price:  $94.99
  15. Hydronix SDC-25-3010 Polypropylene Sediment Filter

    Hydronix SDC-25-3010 Polypropylene Sediment Filter

    Standard 30 inch by 2.5 inch size fits many standard size filter housings Learn More
    $8.99 Retail Price:  $13.79
  16. Hydronix SDC-25-4010 Polypropylene Sediment Filter

    Hydronix SDC-25-4010 Polypropylene Sediment Filter

    Standard 40 inch by 2.5 inch size fits many standard size filter housings Learn More
    $12.99 Retail Price:  $14.34
  17. Pentek KE10G2S Polyester Filter Bag

    Pentek KE10G2S Polyester Filter Bag

    Standard #2 size with 7 inch diameter by 32 inch length fits many common bag filter housings Learn More
    $5.99 Retail Price:  $7.12
  18. Pentek KO10G2S Polyester Filter Bag

    Pentek KO10G2S Polyester Filter Bag

    Standard #2 size with 7 inch diameter by 32 inch length fits many common bag filter housings Learn More
    $6.99 Retail Price:  $8.04
  19. Omnipure ELF-10M-P Carbon Block with Polyphosphate

    Omnipure ELF-10M-P Carbon Block with Polyphosphate

    Proprietary design fits Omnipure ELF and E series valve heads Learn More
    $47.99 Retail Price:  $50.34
  20. Pentek PD-10-30 Polypropylene Sediment Filter

    Pentek PD-10-30 Polypropylene Sediment Filter

    Standard 30 inch by 2.5 inch size and double open end design fits many common filter housings Learn More
    $19.99 Retail Price:  $22.34
  21. CW-F-D Culligan Level 3 Whole House Filter Replacement Cartridge (2-Pack)

    CW-F-D Culligan Level 3 Whole House Filter Replacement Cartridge (2-Pack)

    Fits Culligan HF-150, HF-160, HF-360, HF-365, and any brand of whole house water filter system that uses standard 9 3/4 x 2 1/2 filter cartridges Learn More
    $14.99 Retail Price:  $17.34
  22. W9240002 Doulton Specialty Replacement Filter Cartridge

    W9240002 Doulton Specialty Replacement Water Filter Cartridge

    Fits pressurized Doulton HIP2 Duo and HIP3 Triple housing systems Learn More
    $21.99 Retail Price:  $24.99
  23. FXWF-1000 EcoWater Reverse Osmosis Filter Cartridge
  24. 22006 Hydrologic BigBoy Replacement Carbon Filter - Green

    22006 Hydrologic BigBoy Carbon Filter (Green)

    Regular Price: $80.99

    Special Price: $45.05

  25. 22110 Hydrologic SmallBoy Replacement Carbon Filter - Green

    22110 Hydrologic SmallBoy Carbon Filter (Green)

    Fits filtration system housings that use 10 inch by 2.5 inch filter Learn More
    $12.99 Retail Price:  $17.24

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