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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.

Items 1 to 48 of 81 total

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  • CW-F-D Culligan Level 3 Whole House Filter Replacement Cartridge (2-Pack)
  • W9240002 Doulton Specialty Replacement Filter Cartridge
  • FXWF-1000 EcoWater Reverse Osmosis Filter Cartridge

    FXWF-1000 EcoWater Reverse Osmosis Filter Cartridge

    $8.99 Retail Price:  $12.64
  • 22006 Hydrologic BigBoy Replacement Carbon Filter - Green

    22006 Hydrologic BigBoy Carbon Filter (Green)

    Regular Price: $80.99

    Special Price: $45.05

  • CB-25-2010 Hydronix Replacement Filter Cartridge

    CB-25-2010 Hydronix Replacement Filter Cartridge

    $14.99 Retail Price:  $17.34
  • CB-45-2010 Hydronix Replacement Filter Cartridge

    CB-45-2010 Hydronix Replacement Filter Cartridge

    $36.99 Retail Price:  $49.44
  • HDG-CB-AC10 Hydronix Reverse Osmosis Filter

    HDG-CB-AC10 Hydronix Reverse Osmosis Filter

    $7.99 Retail Price:  $9.19
  • SDC-25-2010 Hydronix Whole House Replacement Sediment Filter Cartridge
  • SDC-45-1010 Hydronix Whole House Replacement Sediment Filter Cartridge
  • EPM-10 Pentek Undersink Filter Replacement Cartridge

    EPM-10 Pentek Undersink Filter Replacement Cartridge

    $9.99 Retail Price:  $10.57
  • NCP-10 Pentek Undersink Filter Replacement Cartridge

    NCP-10 Pentek Undersink Filter Replacement Cartridge

    $9.99 Retail Price:  $11.95
  • WP10BB97P Pentek Whole House Filter Replacement Cartridge
  • PX10-20 Purtrex Replacement Filter Cartridge

    PX10-20 Purtrex Replacement Water Filter

    $6.99 Retail Price:  $9.19
  • PX10-40 Purtrex Replacement Filter Cartridge

    PX10-40 Purtrex Replacement Water Filter

    $12.99 Retail Price:  $14.94
  • PX10-9-78 Purtrex Replacement Filter Cartridge

    PX10-9-78 Purtrex Replacement Water Filter

    $4.05 Retail Price:  $8.04
  • RS14-DS OmniFilter Whole House Filter Replacement Cartridge (2-Pack)
  • SF100 OmniFilter Shower-Soft Inline Shower Filter

    SF100 OmniFilter Shower-Soft Inline Shower Filter

    $29.99 Retail Price:  $35.64
  • KDF55-20 Tier1 Replacement Filter Cartridge

    KDF55-20 Tier1 Replacement Filter Cartridge

    Regular Price: $87.99

    Special Price: $55.05

  • 41400009 Hydrotech Reverse Osmosis Filter

    41400009 Hydrotech Reverse Osmosis Filter

    $14.99 Retail Price:  $18.39
  • GX10-20 Hytrex Replacement Filter Cartridge

    GX10-20 Hytrex Water Filter Cartridge

    $7.99 Retail Price:  $11.49
  • GX10-30 Hytrex Replacement Filter Cartridge

    GX10-30 Hytrex Water Filter Cartridge

    $11.99 Retail Price:  $16.09
  • GX10-9-78 Hytrex Replacement Filter Cartridge

    GX10-9-78 Hytrex Replacement Water Filter Cartridge

    $6.99 Retail Price:  $8.61
  • IF14C Ice-O-Matic Inline Water Filtration Cartridge

    IF14C Ice-O-Matic Inline Water Filter

    $90.99 Retail Price:  $97.74
  • IF18C Ice-O-Matic Inline Water Filtration Cartridge - 1

    IF18C Ice-O-Matic Inline Water Filter Cartridge

    $99.99 Retail Price:  $117.29
  • 1266690 Merlin Merlin Reverse Osmosis Sediment Filter

    1266690 Merlin Merlin Reverse Osmosis Sediment Filter

    $16.99 Retail Price:  $19.34
  • Q5621 Omnipure Replacement Filter Cartridge

    Q5621 Omnipure Replacement Filter Cartridge

    $19.99 Retail Price:  $24.14
  • Q5621-P Omnipure Replacement Filter Cartridge

    Q5621-P Omnipure Replacement Filter Cartridge

    $21.99 Retail Price:  $27.59
  • SCL10-B Omnipure Scale Inline Filter

    SCL10-B Omnipure Scale Inline Filter

    $12.99 Retail Price:  $17.24
  • BP-420-10 Pentek Polypropylene Bag Filter

    BP-420-10 Pentek Polypropylene Bag Filter

    $4.99 Retail Price:  $8.15
  • CW-F Pentek String Wound Sediment Water Filter (9-7/8 in x 2-1/4 in)
  • SPC-45-1010 Hydronix Pleated Sediment Water Filter

    SPC-45-1010 Hydronix Pleated Sediment Water Filter

    $10.99 Retail Price:  $18.39
  • SPC-45-2010 Hydronix Pleated Sediment Water Filter Cartridge
  • SDC-25-1010 Hydronix Sediment Water Filter Cartridge

    SDC-25-1010 Hydronix Sediment Water Filter Cartridge

    $4.99 Retail Price:  $6.89
  • WPX10BB97P Pentek Fibrillated Polypropylene Water Filter

    WPX10BB97P Pentek Fibrillated Polypropylene Water Filter

    $18.99 Retail Price:  $22.99
  • CB-25-1010 Hydronix Carbon Water Filter Replacement

    CB-25-1010 Hydronix Carbon Water Filter Replacement

    $6.99 Retail Price:  $10.34
  • ELF-XL-10M-P Omnipure Water Filter

    ELF-XL-10M-P Omnipure Water Filter

    Regular Price: $33.99

    Special Price: $23.05

  • SDC-25-0510 Hydronix Sediment Water Filter Cartridge

    SDC-25-0510 Hydronix Sediment Water Filter Cartridge

    $4.99 Retail Price:  $8.34
  • SPC-25-1010 Hydronix Pleated Sediment Water Filter
  • SPC-25-2010 Hydronix Pleated Sediment Water Filter

    SPC-25-2010 Hydronix Pleated Sediment Water Filter

    Regular Price: $10.99

    Special Price: $6.05

  • SWC-25-1010 Hydronix String Wound Sediment Water Filter

    SWC-25-1010 Hydronix String Wound Sediment Water Filter

    $10.99 Retail Price:  $14.34
  • KDF85-10BB Tier1 Water Filter

    KDF85-10BB Tier1 Water Filter

    $81.99 Retail Price:  $86.24
  • KDF85-20 Tier1 Water Filter

    KDF85-20 Tier1 Water Filter

    $102.99 Retail Price:  $121.89
  • P10-5 Tier1 Polypropylene Sediment Filter

    P10-5 Tier1 Polypropylene Sediment Filter

    Regular Price: $3.99

    Special Price: $2.55

  • NCP-BB Pentek Comparable Whole House Carbon Filter by Tier1
  • Hydronix SDC-25-3010 Polypropylene Sediment Filter

    Hydronix SDC-25-3010 Polypropylene Sediment Filter

    $8.99 Retail Price:  $13.79
  • Hydronix SDC-25-4010 Polypropylene Sediment Filter

    Hydronix SDC-25-4010 Polypropylene Sediment Filter

    $12.99 Retail Price:  $14.34
  • Pentek KE10G2S Polyester Filter Bag

    Pentek KE10G2S Polyester Filter Bag

    $5.99 Retail Price:  $7.12
  • Pentek KO10G2S Polyester Filter Bag

    Pentek KO10G2S Polyester Filter Bag

    $6.99 Retail Price:  $8.04

Items 1 to 48 of 81 total

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