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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. 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
  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. CW-F-D Culligan Comparable Whole House Water Filter 2-Pack by Tier1
  5. 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
  6. EPM-10 Pentek Undersink Filter Replacement Cartridge

    EPM-10 Pentek Undersink Filter Replacement Cartridge

    Fits any standard housing that uses 9 3/4-inch x 2 1/2-inch replacement filter cartridges Learn More
    $9.99 Retail Price:  $10.57
  7. NCP-10 Pentek Undersink Filter Replacement Cartridge

    NCP-10 Pentek Undersink Filter Replacement Cartridge

    Fits any standard housing that uses 9 3/4-inch x 2 1/2-inch replacement filter cartridges Learn More
    $9.99 Retail Price:  $11.95
  8. PD-10-934 Pentek Whole House Filter Replacement Cartridge

    PD-10-934 Pentek Whole House Filter Replacement Cartridge

    Fits any standard housing that uses 10-inch x 2 1/2-inch replacement filter cartridges Learn More
    $7.99 Retail Price:  $8.15
  9. PX10-9-78 Purtrex Replacement Filter Cartridge

    PX10-9-78 Purtrex Replacement Water Filter

    Fits compact water filtration system housings that use 2.5-inch x 10-inch filters Learn More
    $4.99 Retail Price:  $8.04
  10. RS14-DS OmniFilter Whole House Filter Replacement Cartridge (2-Pack)

    RS14-DS OmniFilter Whole House Water Filter Cartridges (2-Pack)

    Fits any brand of whole house water filtration system that uses standard 9 3/4 x 2 1/2 filter cartridges Learn More
    $7.99 Retail Price:  $8.15
  11. RS14-SS OmniFilter Whole House Filter Replacement Cartridge

    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
    $6.99 Retail Price:  $9.34
  12. GX10-9-78 Hytrex Replacement Filter Cartridge

    GX10-9-78 Hytrex Replacement Water Filter Cartridge

    Fits industry standard filter housings that use 2.5-inch x 10-inch water filters Learn More
    $6.99 Retail Price:  $8.61
  13. SDC-25-1010 Hydronix Sediment Water Filter Cartridge

    SDC-25-1010 Hydronix Sediment Water Filter Cartridge

    2.5 inches by 9 7/8 inches, 10 micron. Built to fit into systems that use Liquatec SDF-25-1010 and Watts FPMB10-978 water filters Learn More
    $5.99 Retail Price:  $6.89
  14. CB-25-1010 Hydronix Carbon Water Filter Replacement

    CB-25-1010 Hydronix Carbon Water Filter Replacement

    9 7/8 inches by 2.75 inches, 10 micron, fits systems that use Liquatec CB-250-975-10 and Watts IF-CB-010 / IFCB010M water filters Learn More
    $8.99 Retail Price:  $10.34
  15. SPC-25-1010 Hydronix Pleated Sediment Water Filter

    SPC-25-1010 Hydronix Pleated Sediment Water Filter

    10 micron filter, sized 9 7/8x2.5 inches Learn More
    $8.99
  16. SWC-25-1010 Hydronix String Wound Sediment Water Filter

    SWC-25-1010 Hydronix String Wound Sediment Water Filter

    10 micron filter, sized 10 x 2.5 inches Learn More
    $11.99 Retail Price:  $14.34
  17. EP10-10 Tier1 Carbon Block Water Filter

    EP10-10 Tier1 Carbon Block Water Filter

    Sized 10 x 2 7/8 inches Learn More
    $7.99 Retail Price:  $10.34

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