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. W30PEHD American Plumber Whole House Heavy Duty Filter Cartridge

    W30PEHD American Plumber Whole House Heavy Duty Filter Cartridge

    Fits American Plumber W10-PR and W15-PR and most other heavy duty water filter housings Learn More
    $23.99 MSRP:  $27.34
  2. PX30-20 Purtrex Replacement Water Filter Cartridge

    PX30-20 Purtrex Replacement Water Filter Cartridge

    For filtration system housings that use 2.5-inch x 20-inch filters Learn More
    $6.89 MSRP:  $9.19
  3. PX30-9-78 Purtrex Replacement Filter Cartridge

    PX30-9-78 Purtrex Replacement Water Filter Cartridge

    Fits filtration housings that use 2.5-inch x 10-inch replacement water filters Learn More
    $4.09 MSRP:  $9.99
  4. GX30-9-78 Hytrex Replacement Filter Cartridge

    GX30-9-78 Hytrex Water Filter Cartridge

    Fits industry standard filtration system housings that use 2.5-inch x 10-inch water filters Learn More
    $5.99 MSRP:  $8.61
  5. SPC-45-2030 Hydronix Pleated Sediment Water Filter

    SPC-45-2030 Hydronix Pleated Sediment Water Filter

    20 inches by 4.5 inches, 30 micron. Fits into systems that use Liquatec SPF-45-2030, Pentek 155430-43 and Pentek R30-20BB water filters Learn More
    $24.99 MSRP:  $32.99
  6. 1-500-F Rusco Polyester Screened Spin-Down Water Filtration System

    1-500-F Rusco Polyester Screened Spin-Down Water Filtration System

    500 mesh, 30 micron and built to fit a one inch pipe Learn More
    $57.99 MSRP:  $68.99
  7. SPC-25-2030 Hydronix Pleated Sediment Water Filter

    SPC-25-2030 Hydronix Pleated Sediment Water Filter

    30 micron filter, sized 20 x 2.5 inches Learn More
    $16.99 MSRP:  $23.99
  8. SWC-25-2030 Hydronix String Wound Sediment Water Filter (30 micron)

    SWC-25-2030 Hydronix String Wound Sediment Water Filter (30 micron)

    Fits into filtration system housing that accepts 20 x 2.5 inch water filters Learn More
    $13.99 MSRP:  $17.24
  9. R30-20BB Pentek Whole House Water Filter

    R30-20BB Pentek Whole House Filter Replacement Cartridge

    Fits Pentek Big Blue and any standard heavy-duty housing that uses 20-inch x 4 1/2-inch replacement filter cartridges Learn More

    As Low As $26.08 Per Filter

  10. R30-BB Pentek Whole House Filter Cartridge

    R30-BB Pentek Whole House Water Filter Replacement Cartridge

    Fits the Pentek Big Blue or any other heavy duty water filtration system housing that uses 9 3/4-inch x 4 1/2-inch cartridges Learn More

    As Low As $14.30 Per Filter

  11. Pentek R30 Replacement Water Filter Cartridge

    Pentek R30 Sediment Water Filter Cartridge Replacement

    Fits most standard housings that accept 10-inch x 2.5-inch water filter cartridges Learn More

    As Low As $8.27 Per Filter

  12. 3WH-HDPL-F01 Filtrete Comparable Whole House Water Filter by Tier1

    3WH-HDPL-F01 Filtrete Comparable Whole House Water Filter by Tier1

    Fits most standard 10 x 5-inch housings Learn More

    As Low As $0.00 Per Filter

  13. RS6 OmniFilter Comparable Whole House Water Filter by Tier1

    RS6 OmniFilter Comparable Whole House Water Filter by Tier1

    Fits most standard 10 x 5-inch housings Learn More

    As Low As $0.00 Per Filter

  14. BBF1-20MB Pentek Whole House Filter Replacement Cartridge

    BBF1-20MB Pentek Whole House Filter Replacement Cartridge

    Fits any standard housing that uses 20-inch x 4 1/2-inch filter cartridges Learn More
    $89.99 MSRP:  $144.23
  15. FXHSC GE SmartWater Whole House Filter Replacement Cartridge

    FXHSC GE SmartWater Whole House Filter Replacement Cartridge

    Fits any brand of whole house water filter system that uses standard 9 3/4 x 4 1/2 filter cartridges Learn More
    $21.99 MSRP:  $29.95
  16. FXHSC GE Comparable Whole House Water Filter by Tier1

    FXHSC GE Comparable Whole House Water Filter by Tier1

    Fits most standard 10 x 5-inch housings Learn More

    As Low As $0.00 Per Filter

  17. 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
  18. W30W American Plumber Whole House Sediment Water Filter Cartridge (2-Pack)

    W30W 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
    $12.99 MSRP:  $16.34
  19. PR-1U Culligan Universal Water Pitcher Replacement Cartridge

    PR-1U Culligan Universal Water Filter Pitcher Replacement Cartridge

    Fits Culligan PIT-1, OP-1, GP-1, WP-1 and most Brita and PUR brand water filter pitchers Learn More
    $13.39 MSRP:  $19.99
  20. PR-3 Culligan Water Pitcher Replacement Cartridge (3-Pack)

    PR-3 Culligan Water Pitcher Replacement Cartridge (3-Pack)

    Fits Culligan PIT-1, OP-1, GP-1, WP-1, WFR1, and WFJ2 water pitchers Learn More
    $23.79 MSRP:  $33.99
  21. FXUSC GE SmartWater Whole House Filter Replacement

    FXUSC GE SmartWater Whole House Filter Replacement Cartridge (2-Pack)

    Fits any brand of whole house water filter system that uses standard 9 3/4 x 2 1/2 filter cartridges Learn More
    $16.99
  22. FXSCH GE Shower Replacement Filter Cartridge

    FXSCH GE Shower Replacement Filter Cartridge

    Fits the GE GXSM01HWW shower filter system Learn More
    $15.99 MSRP:  $27.99
  23. GXRTDR GE SmartWater Inline Filter Cartridge

    GXRTDR GE SmartWater Inline Filter Cartridge

    Fits any 1/4-inch plastic or copper water line Learn More
    $20.99 MSRP:  $30.99 As low as: $20.99
  24. PCF1-10MB Pentek Whole House Filter Replacement Cartridge

    PCF1-10MB Pentek Whole House Filter Replacement Cartridge

    Fits any standard housing that uses 9 3/4-inch x 2 1/2-inch replacement filter cartridges Learn More
    $24.99 MSRP:  $30.69
  25. R30-478 Pentek Undersink Filter Replacement Cartridge

    R30-478 Pentek Undersink Filter Replacement Cartridge

    Fits Pentek housings that use compact 4 7/8-inch x 2 5/8-inch replacement filter cartridges Learn More
    $8.99 MSRP:  $12.75

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