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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. TIER1-DGD1-20BB Whole House Sediment Water Filter

    DGD-2501-20 Pentek Comparable Whole House Sediment Water Filter by Tier1

    Fits most standard 20 x 5-inch housings Learn More
    $21.99 Retail Price:  $24.34
  2. Hydronix SDC-45-2001 Whole House Sediment Filter Cartridge (6-Pack)

    SDC-45-2001 Hydronix Whole House Replacement Sediment Filter Cartridge (6-Pack)

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

    $112.99

  3. DGD-2501-20 Pentek Whole House Replacement Sediment Filter (6-Pack)

    DGD-2501-20 Pentek Whole House Replacement Sediment Filter Cartridge (6-Pack)

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

    $136.99

  4. ECP1-20BB Pentek Replacement Filter Cartridge (6-Pack)

    ECP1-20BB Pentek Replacement Filter Cartridge (6-Pack)

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

    $142.99

  5. 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 $21.99 Per Filter

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

    DGD-2501-20 Pentek Whole House Replacement Sediment Filter Cartridge

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

    As Low As $22.83 Per Filter

  7. 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 $23.83 Per Filter

  8. HB-20-1W Harmsco Calypso Blue Replacement Filter Cartridge

    HB-20-1W Harmsco Calypso Blue Replacement Filter Cartridge

    Fits any industry standard housing that accepts 4.5-inch by 20-inch replacement filters. Learn More
    $36.99 Retail Price:  $39.20
  9. WP1BB20P Pentek Whole House Filter Replacement Cartridge

    WP1BB20P Pentek Whole House Filter Replacement Cartridge

    Fits Pentek Big Blue and other heavy-duty filter housings that use 20-inch filters Learn More
    $37.99 Retail Price:  $39.55
  10. SWC-45-2001 Hydronix String Wound Sediment Water Filter

    SWC-45-2001 Hydronix String-Wound Sediment Water Filter

    20 inches by 4.5 inches, 1 micron. Fits into Big Blue water filtration housings systems that use Liquatec SWF-45-2001, Pentek: 355222-43 and Watts SF1-20-425 water filters Learn More
    $24.99 Retail Price:  $27.59
  11. SPC-45-2001 Hydronix Pleated Sediment Water Filter

    SPC-45-2001 Hydronix Pleated Sediment Water Filter

    Fits water filtration systems that use the Liquatec SPF-45-2001, Pentek 255493-43 and Watts FM-BB-20-1 filters Learn More
    $26.99 Retail Price:  $34.49
  12. FM-BB-20-1A Watts Pleated Water Filter Cartridge

    FM-BB-20-1A Watts Pleated Water Filter Cartridge

    Sized 20 x 4.5 inches Learn More
    $49.99 Retail Price:  $75.84
  13. 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
    $56.99 Retail Price:  $67.84

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