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When we protect your filter purchase with our No Worries Guarantee, we mean it!

No Worries...
  • Your filters are guaranteed to be the right fit!
  • Our products are price match guaranteed!
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  • You’re guaranteed to find expert help!

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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 207 total

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  • 600R American Plumber Undersink Filter Replacement Cartridge

    600R American Plumber Undersink Water Filter Cartridge

    $31.99 Retail Price:  $35.06
  • WIC-600 American Plumber Undersink Filter System

    WIC-600 American Plumber Undersink Filter System

    $55.99 Retail Price:  $58.34
  • ADS-APRC6 Aquapatrol Ice Machine Replacement Water Filter
  • 3M Aqua-Pure AP22 Under Sink Water Filter
  • AP-DW80/90 3M Aqua-Pure Water Filter Set

    AP-DW80/90 3M Aqua-Pure Pre and Post Filter Set

    $116.99 Retail Price:  $198.46
  • 3M Aqua-Pure AP-DW85 Water Filter Replacement Cartridge
  • C-COMPLETE 3M Aqua-Pure Undersink Water Filter

    C-COMPLETE 3M Aqua-Pure Undersink Water Filter Cartridge

    $66.99 Retail Price:  $88.54
  • C-CYST-FF 3M Aqua-Pure Undersink Water Filter

    C-CYST-FF 3M Aqua-Pure Undersink Water Filter Cartridge

    $52.99 Retail Price:  $56.34
  • EP15 3M Aqua-Pure Whole House Water Filter

    EP15 3M Aqua-Pure Whole House Water Filter Cartridge

    $69.99 Retail Price:  $82.79
  • EP25 3M Aqua-Pure Whole House Water Filter

    EP25 3M Aqua-Pure Whole House Water Filter Cartridge

    $91.99 Retail Price:  $111.54
  • A101 Aries Undersink Filter Replacement Cartridge

    A101 Aries Undersink Filter Replacement Cartridge

    $33.99 Retail Price:  $49.21
  • WI-BG3000C Body Glove Replacement Filter Cartridge

    WI-BG3000C Body Glove Replacement Filter Cartridge

    $151.46 Retail Price:  $201.95
  • WI-BG3000R Body Glove Replacement Filter Cartridge

    WI-BG3000R Body Glove Replacement Filter Cartridge

    $138.71 Retail Price:  $184.95
  • CB1 OmniFilter Undersink Filter Replacement Cartridge
  • CB3 OmniFilter Undersink Filter Replacement Cartridge
  • 1000R-D Culligan Level 3 Undersink RV and Marine Icemaker and Drinking Water Filter
  • D-250A Culligan Undersink Filter Replacement Cartridge Set
  • D-30 Culligan Level 2 Undersink Filter Replacement Cartridge
  • D-40 Culligan Level 4 Undersink Water Filter Replacement Cartridge
  • FM-15A Culligan Level 3 On-Tap Faucet Filter System

    FM-15A Culligan Level 3 On-Tap Faucet Filter System

    $22.99 Retail Price:  $28.51
  • FM-15RA Culligan Level 3 Faucet Filter Replacement Cartridge
  • RC-EZ-3 Culligan Level 3 Easy-Change Inline Filter Replacement Cartridge
  • RC-EZ-4 Culligan Level 4 Easy-Change Inline Filter Replacement Cartridge
  • SY-1000 Culligan Water Filtration System
  • US-EZ-3 Culligan Level 3 Easy-Change Undersink Filter System
  • US-EZ-4 Culligan Level 4 Easy-Change Undersink Filter System
  • CFS8812X Cuno Whole House Filter Replacement Cartridge

    CFS8812X Cuno Whole House Filter Replacement Cartridge

    $66.05 Retail Price:  $71.29
  • CFS8812X-S Cuno Whole House Filter Replacement Cartridge

    CFS8812X-S Cuno Whole House Filter Replacement Cartridge

    $74.99 Retail Price:  $77.04
  • CFS9812X Cuno Whole House Filter Replacement Cartridge

    CFS9812X Cuno Whole House Filter Replacement Cartridge

    $66.99 Retail Price:  $72.09
  • CFS9812X-S Cuno Whole House Filter Replacement Cartridge

    CFS9812X-S Cuno Whole House Filter Replacement Cartridge

    $65.05 Retail Price:  $78.19
  • HF10-MS Cuno Whole House Filter Replacement Cartridge

    HF10-MS Cuno Whole House Filter Replacement Cartridge

    Regular Price: $65.99

    Special Price: $50.05

  • HF20 Cuno Whole House Filter Replacement Cartridge

    HF20 Cuno Whole House Filter Replacement Cartridge

    Regular Price: $64.99

    Special Price: $50.05

  • HF20-MS Cuno Whole House Filter Replacement Cartridge

    HF20-MS Cuno Whole House Filter Replacement Cartridge

    $71.99 Retail Price:  $73.36
  • HF20-S Cuno Whole House Filter Replacement Cartridge

    HF20-S Cuno Whole House Filter Replacement Cartridge

    $68.99 Retail Price:  $86.24
  • W9120145 Doulton Replacement Candle Set (6-Pack)

    W9120145 Doulton Replacement Candle Set (6-Pack)

    $104.99 Retail Price:  $118.30
  • W9120562 Doulton Sterasyl Undersink Ceramic Candle Replacement Filter Cartridge
  • W9121020 Doulton Supersterasyl Undersink Ceramic Candle Replacement Filter Cartridge
  • W9121200 Doulton Supersterasyl Undersink Ceramic Candle Replacement Filter Cartridge
  • W9121214 Doulton ATC Super Sterasyl Replacement Element

    W9121214 Doulton ATC Super Sterasyl Ceramic Water Filter

    $37.94 Retail Price:  $47.91
  • W9121715 Doulton Supersterasyl Undersink Ceramic Candle Replacement Filter Cartridge
  • W9121750 Doulton Supersterasyl Undersink Ceramic Candle Replacement Filter Cartridge
  • W9122021 Doulton SuperCarb Replacement Element
  • W9122190 Doulton SuperCarb SI Replacement Element

    W9122190 Doulton SuperCarb SI Ceramic Water Filter

    $50.36 Retail Price:  $60.21
  • W9123019 Doulton UltraCarb SI Replacement Element

    W9123019 Doulton UltraCarb SI Ceramic Filter Candle

    $55.81 Retail Price:  $66.48
  • W9125030 Doulton Specialty Replacement Filter Cartridge
  • W9142010 Doulton Replacement Ceramic Filter

    W9142010 Doulton Replacement Ceramic Filter

    $15.99 Retail Price:  $18.39
  • W9223002 Doulton Replacement Ceramic Filter

    W9223002 Doulton Slimline Replacement Ceramic Filter

    $53.99 Retail Price:  $60.87
  • W9223026 Doulton Replacement Ceramic Filter

Items 1 to 48 of 207 total

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