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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. SDC-25-2010 Hydronix Comparable Sediment Water Filter by Tier1

    SDC-25-2010 Hydronix Comparable Sediment Water Filter by Tier1

    Fits standard filter housings using 20 x 2.5-inch filters Learn More
  2. EPM-20 Pentek Comparable Whole House Water Filter by Tier1

    EPM-20 Pentek Comparable Whole House Water Filter by Tier1

    Fits standard 20 x 2.5-inch housings Learn More
    $12.99 Retail Price:  $20.99
  3. AP-GRMB-10PP-20UB Whole House Replacement Cartridge by 3M Aqua-Pure

    AP-GRMB-10PP-20UB Whole House Replacement Filter by 3M Aqua-Pure

    Fits most standard 20-inch x 2.5-inch housings Learn More
    $11.99 Retail Price:  $14.34
  4. CB-25-2010 Hydronix Replacement Filter Cartridge

    CB-25-2010 Hydronix Replacement Filter Cartridge

    Fits most housings that accept 20-inch x 2.5-inch water filter cartridges Learn More
    $14.99 Retail Price:  $17.34
  5. SDC-25-2010 Hydronix Whole House Replacement Sediment Filter Cartridge

    SDC-25-2010 Hydronix Whole House Replacement Sediment Filter Cartridge

    Fits most housings that accept 20-inch x 2.5-inch water filter cartridges Learn More
    $9.99 Retail Price:  $12.34
  6. EPM-20 Pentek Whole House Filter Replacement Cartridge

    EPM-20 Pentek Whole House Filter Replacement Cartridge

    Fits any standard housing that uses 20-inch x 2 1/2-inch replacement filter cartridges Learn More
    $16.99 Retail Price:  $19.34
  7. NCP-20 Pentek Whole House Filter Replacement Cartridge

    NCP-20 Pentek Whole House Filter Replacement Cartridge

    Fits any standard housing that uses 20-inch x 2 1/2-inch replacement filter cartridges Learn More
    $14.99 Retail Price:  $20.57
  8. PD-10-20 Pentek Whole House Replacement Sediment Filter Cartridge

    PD-10-20 Pentek Whole House Replacement Sediment Filter Cartridge

    Fits most standard housings that accept 20-inch x 2.5-inch water filter cartridges Learn More
    $12.99 Retail Price:  $15.34
  9. PX10-20 Purtrex Replacement Filter Cartridge

    PX10-20 Purtrex Replacement Water Filter

    Fits industry standard filtration system housings that use 2.5-inch x 20-inch replacement filters Learn More
    $6.99 Retail Price:  $9.19
  10. KDF55-20 Tier1 Replacement Filter Cartridge

    KDF55-20 Tier1 Replacement Filter Cartridge

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

    Regular Price: $90.99

    Special Price: $55.05

  11. GX10-20 Hytrex Replacement Filter Cartridge

    GX10-20 Hytrex Water Filter Cartridge

    For filtration system housings that use 2.5-inch x 20-inch water filter cartridges Learn More
    $7.99 Retail Price:  $11.49
  12. SPC-25-2010 Hydronix Pleated Sediment Water Filter

    SPC-25-2010 Hydronix Pleated Sediment Water Filter

    10 micron filter, sized 20x2.5 inches Learn More

    Regular Price: $10.99

    Special Price: $6.05

  13. KDF85-20 Tier1 Water Filter

    KDF85-20 Tier1 Water Filter

    Sized at 20 x 2.5 inches, this filter will fit into all #20 Standard or Slimline water filtration system housings Learn More
    $105.99 Retail Price:  $121.89

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