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. R30-20BB Pentek Comparable Whole House Sediment Water Filter by Tier1

    R30-20BB Pentek Comparable Whole House Sediment Water Filter by Tier1

    Fits many styles of water filter housings that accept 20 x 5-inch filters Learn More
    $19.99 MSRP:  $25.99
  2. 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 $17.16 Per Filter

  3. HB-20-50W Harmsco Comparable Whole House Sediment Water Filter by Tier1

    HB-20-50W Harmsco Comparable Whole House Sediment Water Filter by Tier1

    Fits many styles of water filter housings that accept 20 x 5-inch filters Learn More

    As Low As $0.00 Per Filter

  4. SPC-45-2030 Pentek Comparable Whole House Sediment Water Filter by Tier1

    SPC-45-2030 Hydronix Comparable Whole House Sediment Water Filter by Tier1

    Fits many styles of water filter housings that accept 20 x 5-inch filters Learn More

    As Low As $0.00 Per Filter

  5. SPC-45-2050 Hydronix Comparable Whole House Sediment Water Filter by Tier1

    SPC-45-2050 Hydronix Comparable Whole House Sediment Water Filter by Tier1

    Fits many styles of water filter housings that accept 20 x 5-inch filters Learn More

    As Low As $18.00 Per Filter

  6. HB-20-20W Harmsco Comparable Whole House Sediment Water Filter by Tier1 (alternate)

    HB-20-20W Harmsco Comparable Whole House Sediment 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

  7. 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

  8. 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

  9. ECP20-20BB Pentek Comparable Whole House Water Filter by Tier1

    ECP20-20BB Pentek Comparable Whole House Water Filter by Tier1

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

    As Low As $0.00 Per Filter

  10. 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 $0.00 Per Filter

  11. W20CLHD20 American Plumber Comparable Whole House 20-inch Heavy Duty Filter Cartridge by Tier1

    W20CLHD20 American Plumber Comparable Whole House 20-inch Heavy Duty Filter Cartridge by Tier1

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

    As Low As $0.00 Per Filter

  12. W20CLHD20 American Plumber Whole House 20-inch Heavy Duty Filter Cartridge

    W20CLHD20 American Plumber Whole House 20-inch Heavy Duty Filter Cartridge

    Fits American Plumber W2010-PR and W2015-PR and most other 20-inch heavy duty water filter housings Learn More
    $28.99 MSRP:  $35.64
  13. MATRIKX-Pb1-HD20 KX Technologies MatrikX Whole House Filter Replacement Cartridge

    MATRIKX-Pb1-HD20 KX Technologies MatrikX Whole House Filter Replacement Cartridge

    Fits any standard housing that uses 20-inch x 4 1/2-inch replacement filter cartridges Learn More
    $123.99
  14. CB-45-2001 Hydronix Whole House Carbon Replacement Water Filter Cartridge

    CB-45-2001 Hydronix Whole House Carbon Replacement Water Filter Cartridge

    Fits industry standard filter housings compatible with 20 inch x 4.5 inch filter cartridges Learn More
    $97.99

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