Discount Water Filters and Air Filters at Discount Filter Store.com

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Water Filtration Systems, Filters, & Parts

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. S1A-D Culligan Comparable Whole House Sediment Water Filter 2-Pack by Tier1

    S1A-D Culligan Comparable Whole House Sediment Water Filter by Tier1(2-Pack)

    Fits most standard 10 x 2.5-inch housings Learn More
    $5.99 MSRP:  $12.99
  2. 255541-43 Pentek Inline Water Filter Replacement
  3. WB-HB-20-20W Harmsco Pleated Commercial Water Filter Cartridge

    WB-HB-20-20W Harmsco Pleated Commercial Water Filter Cartridge

    Fits most standard 20 x 4.5-inch filter housings Learn More
    $28.99 MSRP:  $37.99
  4. SPC-25-1020 Hydronix Sediment Water Filter

    SPC-25-1020 Hydronix Pleated Sediment Water Filter

    9 7/8 inches by 2.5 inches, 20 micron. Fits into filtration systems that use Liquatec SPF-25-1020, Pentek 255483-43 and Watts FM-20-975 water filters Learn More

    As Low As $12.66 Per Filter

  5. Pentek ECP20-20 Replacement Water Filter Cartridge

    ECP20-20 Pentek Replacement Filter Cartridge

    Fits most housings that accept 20-inch x 2.5-inch water filter cartridges Learn More

    As Low As $11.60 Per Filter

  6. Pentek ECP20-20BB Replacement Water Filter Cartridge

    Pentek ECP20-20BB Pleated Sediment Water Filter Cartridge

    Fits most Big Blue housings that accept 20-inch x 4.5-inch water filter cartridges Learn More

    As Low As $21.33 Per Filter

  7. Pentek ECP20-BB Replacement Water Filter Cartridge

    ECP20-BB Pentek Replacement Filter Cartridge

    Fits most Big Blue housings that accept 10-inch x 4.5-inch water filter cartridges Learn More

    As Low As $10.90 Per Filter

  8. GAC20-BB Pentek Whole House Water Filter

    GAC20-BB Pentek Whole House Filter Replacement Cartridge

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

    As Low As $0.00 Per Filter

  9. Pentek S1 Pleated Whole House Sediment Filter

    Pentek S1 Sediment Whole House Water Filter Cartridge Replacement

    Fits any standard water filtration system housing that uses 9 3/4-inch x 2 1/2-inch cartridges Learn More

    As Low As $7.00 Per Filter

  10. SDC-45-1020 Hydronix Comparable Sediment Water Filter by Tier1

    SDC-45-1020 Hydronix Comparable Sediment Water Filter by Tier1

    Fits standard filter housings using 10 x 4.5-inch filters Learn More

    As Low As $9.80 Per Filter

  11. P20-20 Tier1 Sediment Water Filter

    P20-20 Tier1 Sediment Water Filter

    Fits standard 20 x 2.5 inch filter housings Learn More

    As Low As $5.24 Per Filter

  12. Tier1 P20-20BB Whole House Replacement Sediment Filter Cartridge

    DGD-7525-20 Pentek Comparable Whole House Replacement Sediment Filter Cartridge by Tier1

    Fits most standard housings that accept 20-inch x 4.5-inch water filter cartridges Learn More

    As Low As $16.08 Per Filter

  13. Pentek S1-BB Replacement Water Filter Cartridge

    Pentek S1-BB Water Filter Cartridge Replacement

    Fits most Big Blue housings that accept 10-inch x 4.5-inch water filter cartridges Learn More

    As Low As $7.00 Per Filter

  14. S1 Pentek Comparable Whole House Water Filter by Tier1

    S1 Pentek Comparable Whole House Water Filter by Tier1

    Fits PENTEK-S1 and GE FXWPC Learn More

    As Low As $6.83 Per Filter

  15. S1-20BB Pentek Comparable Whole House Water Filter by Tier1

    S1-20BB Pentek Comparable Whole House Water Filter by Tier1

    Fits PENTEK S1-20BB, American Plumber W20CLHD20 and 155305 Learn More

    As Low As $15.33 Per Filter

  16. W20CLHD American Plumber Whole House Sediment Filter by Tier1

    W20CLHD American Plumber Whole House Sediment Filter by Tier1

    Fits most 10-inch standard housings Learn More

    As Low As $0.00 Per Filter

  17. ECP20-BB Pentek Comparable Whole House Sediment Water Filter by Tier1

    ECP20-BB Pentek Comparable Whole House Sediment Water Filter by Tier1

    Fits most 10-inch standard housings Learn More

    As Low As $0.00 Per Filter

  18. P25-20 Pentek Comparable Whole House Sediment Water Filter by Tier1

    P25-20 Pentek Comparable Whole House Sediment Water Filter by Tier1

    Fits standard 20 x 2.5 inch filter housings Learn More

    As Low As $0.00 Per Filter

  19. PD-25-20 Pentek Comparable Whole House Sediment Water Filter by Tier1

    PD-25-20 Pentek Comparable Whole House Sediment Water Filter by Tier1

    Fits standard 20 x 2.5 inch filter housings Learn More

    As Low As $6.83 Per Filter

  20. PS20-20C Pentek Comparable Whole House Sediment Water Filter by Tier1

    PS20-20C Pentek Comparable Whole House Sediment Water Filter by Tier1

    Fits standard 20 x 2.5 inch filter housings Learn More

    As Low As $6.83 Per Filter

  21. PX20-20 Purtrex Comparable Whole House Sediment Water Filter by Tier1

    PX20-20 Purtrex Comparable Whole House Sediment Water Filter by Tier1

    Fits standard 20 x 2.5 inch filter housings Learn More

    As Low As $0.00 Per Filter

  22. PMB20-20 Watts Comparable Whole House Sediment Water Filter by Tier1

    FPMB20-20 Watts Comparable Whole House Sediment Water Filter by Tier1

    Fits standard 20 x 2.5 inch filter housings Learn More

    As Low As $0.00 Per Filter

  23. HB-20-20W Harmsco Comparable Whole House Sediment Water Filter by Tier1

    HB-20-20W Harmsco Comparable Whole House Sediment Water Filter by Tier1

    Fits most systems requiring a 20-inch x 4.5-inch filter cartridge Learn More

    As Low As $0.00 Per Filter

  24. 22010 Hydrologic Comparable Whole House Water Filter by Tier1

    22010 Hydrologic Comparable Whole House Water Filter by Tier1

    Fits into systems that use the Liquatec SPF-45-2020, Pentek 255495-43 and Watts FM-BB-20-20 water filters Learn More

    As Low As $0.00 Per Filter

  25. SPC-45-2020 Hydronix Comparable Whole House Water Filter by Tier1 (alternate)

    SPC-45-2020 Hydronix Comparable Whole House Water Filter by Tier1

    Fits into systems that use the Liquatec SPF-45-2020, Pentek 255495-43 and Watts FM-BB-20-20 water filters Learn More

    As Low As $0.00 Per Filter

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