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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. AF-20-2015 Aries Comparable Sediment Water Filter by Tier1

    AF-20-2015 Aries Comparable Polypropylene Sediment Water Filter by Tier1

    Fits water filtration systems that accept 20 x 4.5 inch cartridges, including the #20 Big Blue and Big Boy housings by Pentek Learn More

    Regular Price: $66.99

    Special Price: $35.05

  2. ECP5-20BB Pentek Comparable Whole House Sediment Water Filter by Tier1

    ECP5-20BB Pentek Comparable Whole House Sediment Water Filter by Tier1

    Fits most 20 x 5-inch filter housings Learn More
    $23.99 Retail Price:  $29.99
  3. EPM-20BB Pentek Comparable Whole House Water Filter by Tier1

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

    Fits most standard 20 x 4.5-inch housings Learn More
    $41.99 Retail Price:  $47.99
  4. 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
    $17.99 Retail Price:  $26.99
  5. 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
  6. 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
    $20.99
  7. P5-20BB Tier1 Whole House Sediment Water Filter (2-Pack)

    P5-20BB Tier1 Whole House Sediment Water Filter (2-Pack)

    Fits filtration system housings that accept 20 x 4.5 inch cartridges Learn More

    $34.99

  8. P5-20BB Tier1 Whole House Sediment Water Filter (6-Pack)

    P5-20BB Tier1 Whole House Sediment Water Filter (6-Pack)

    Fits filtration system housings that accept 20 x 4.5 inch cartridges Learn More

    $91.99

  9. P5-20BB Tier1 Sediment Water Filter

    P5-20BB Tier1 Whole House Sediment Water Filter

    Fits filtration system housings that accept 20 x 4.5 inch cartridges Learn More

    As Low As $15.33 Per Filter

  10. CBC-20BB-WF Tier1 Water Filter Cartridge

    CBC-20BB-WF Tier1 Water Filter Cartridge

    Fits filtration system housings that accepts 20 x 4.5 inch cartridges Learn More
    $69.99 Retail Price:  $83.94
  11. EP5-20BB Tier1 Carbon Block Water Filter

    EP5-20BB Tier1 Carbon Block Water Filter

    Fits filtration system housings that accepts 20 x 4.5 inch cartridges Learn More
    $40.99 Retail Price:  $62.09

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