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. CB1-10 Pentek Carbon Block Water Filter Replacement

    CB1-10 Pentek Carbon Block Water Filter Replacement

    Fits most standard 10-inch x 2.5-inch housings Learn More
    $15.29 MSRP:  $23.99
  2. Hydronix SDC-45-2001 Whole House Sediment Filter Cartridge

    SDC-45-2001 Hydronix Whole House Replacement Sediment Filter Cartridge

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

    As Low As $18.66 Per Filter

  3. SPC-25-1001 Hydronix Pleated Sediment Filter

    SPC-25-1001 Hydronix Pleated Sediment Water Filter

    1 micron filter, sized 9 7/8x2.5 inches Learn More

    As Low As $6.00 Per Filter

  4. Pentek CHLORPLUS-10 Whole House Water Filter Replacement Cartridge

    Pentek ChlorPlus-10 Whole House Carbon Block Water Filter Replacement Cartridge

    Fits any standard housing that uses 9 3/4-inch x 2 1/2-inch replacement filter cartridges Learn More

    As Low As $18.00 Per Filter

  5. DGD-2501-20 Pentek Whole House Sediment Filter

    Pentek DGD-2501-20 Sediment Water Filter Cartridge Replacements

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

    As Low As $22.50 Per Filter

  6. DGD-2501 Pentek Whole House Water Filter

    Pentek DGD-2501 Whole House Water Filter Replacement Cartridge

    Fits Pentek Big Blue and other heavy-duty filter housings Learn More

    As Low As $9.60 Per Filter

  7. Pentek ECP1-10 Replacement Water Filter Cartridge

    ECP1-10 Pentek Replacement Filter Cartridge

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

    As Low As $7.00 Per Filter

  8. Pentek ECP1-20BB Replacement Water Filter Cartridge

    ECP1-20BB Pentek Replacement Filter Cartridge

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

    As Low As $23.00 Per Filter

  9. Pentek ECP1-BB Replacement Water Filter Cartridge

    Pentek ECP1-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 $12.83 Per Filter

  10. Pentek P1-20 Whole House Water Filter Replacement Cartridge

    Pentek P1-20 Sediment Whole House Filter Replacement Cartridge

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

    As Low As $9.75 Per Filter

  11. P1 Pentek 10 x 2.5-inch Whole House Sediment Water Filter Replacement

    P1 Pentek Comparable Whole House Sediment Water Filter by Tier1

    Fits most standard 10 x 2.5-inch housings Learn More

    As Low As $2.39 Per Filter

  12. DGD-2501 Pentek Comparable Whole House Filter by Tier1

    DGD-2501 Tier1 Pentek Comparable Whole House Sediment Water Filter

    Fits most 10 x 4.5-inch filter housings Learn More

    As Low As $8.08 Per Filter

  13. Pentek P1 Polyproplyene Water Filter (10 x 2 1/2)

    P1 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

    As Low As $5.60 Per Filter

  14. P1-20 Pentek Comparable Sediment Water Filter by Tier1

    P1-20 Pentek Comparable Sediment Water Filter by Tier1

    Fits standard filter housings using 20 x 2.5-inch filters Learn More

    As Low As $4.54 Per Filter

  15. SDC-25-0501 Hydronix Comparable Whole House Sediment Water Filter by Tier1

    SDC-25-0501 Hydronix Comparable Whole House Sediment Water Filter by Tier1

    Sized 4 7/8 x 2 1/2 inches Learn More

    As Low As $0.00 Per Filter

  16. PD-1-934-Pentek Comparable Whole House Sediment Water Filter by Tier1

    PD-1-934-Pentek 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

  17. PS1-10C Pentek Comparable Whole House Sediment Water Filter by Tier1

    PS1-10C Pentek 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

  18. PX01-9-78 Purtrex Comparable Whole House Sediment Water Filter by Tier1

    PX01-9-78 Purtrex 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

  19. SDC-45-1001 Hydronix Comparable Whole House Sediment Water Filter by Tier1

    SDC-45-1001 Hydronix Comparable Whole House Sediment Water Filter by Tier1

    Fits most 10 x 4.5-inch filter housings Learn More

    As Low As $0.00 Per Filter

  20. RS16 Omnifilter Comparable Whole House Sediment Water Filter by Tier1

    RS16 Omnifilter Comparable Whole House Sediment Water Filter by Tier1

    Fits most 10 x 4.5-inch filter housings Learn More

    As Low As $0.00 Per Filter

  21. SDC-25-2001 Hydronix Comparable Sediment Water Filter by Tier1

    SDC-25-2001 Hydronix Comparable Sediment Water Filter by Tier1

    Fits standard filter housings using 20 x 2.5-inch filters Learn More

    As Low As $0.00 Per Filter

  22. SWC-25-2001 Hydronix Comparable Whole House Sediment Water Filter by Tier 1

    SWC-25-2001 Hydronix Comparable Whole House Sediment Water Filter by Tier 1

    Fits standard filter housings using 20 x 2.5-inch filters Learn More

    As Low As $0.00 Per Filter

  23. PD-1-20 Pentek Comparable Sediment Water Filter by Tier1

    PD-1-20 Pentek Comparable Sediment Water Filter by Tier1

    Fits standard filter housings using 20 x 2.5-inch filters Learn More

    As Low As $0.00 Per Filter

  24. PS1-20C Pentek Comparable Whole House Sediment Water Filter by Tier1
  25. PX01-20 Purtrex Comparable Whole House Sediment Water Filter by Tier1

    PX01-20 Purtrex Comparable Whole House Sediment Water Filter by Tier1

    Fits standard filter housings using 20 x 2.5-inch filters Learn More

    As Low As $0.00 Per Filter

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