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Replacement Water Filters: Undersink

Keep your kitchen space neat and tidy, while reducing contaminants in your tap water with an under sink water filter system.

The beauty of under sink water filter systems is that they neatly fit underneath your sinks and don’t rob you of valuable counter space as countertop water filters do. Unlike other filter models, with under sink water filters there are no valves or tubing cluttering your counter. Because they remain out of sight, you can install larger under sink water filter models designed to filter out additional water contaminants such as fluorides, arsenic, and nitrates.

Below you’ll find over 60+ OEM under sink water filter systems, housings and filters from some of the top brands, including Pentek®, Culligan®, Whirlpool®, Doulton®, OmniFilter®, and more.

Need help choosing the right under sink water filter system? Our experts can help you choose the perfect under sink water filter to address all of your water quality concerns, just give us a call at 1-800-277-3458.

47 Item(s)

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  • Pentek QC10-CB1R Carbon Block Quick Change Filter

    Pentek QC10-CB1R Carbon Block Quick Change Filter

    $22.99 Retail Price:  $31.04
  • KX-MATRIKX-PB1-10
  • CBR2-10R Pentek Undersink Filter Replacement Cartridge
  • INSINKERATOR-F-201R

    INSINKERATOR-F-201R

    $63.99 Retail Price:  $73.36
  • QC10-TSGACR Pentek Undersink Quick-Change Replacement Filter Cartridge
  • PENTEK-QC10-GACR

    PENTEK-QC10-GACR

    $15.89 Retail Price:  $20.57
  • CB1-10 Pentek Carbon Block Water Filter Replacement

    CB1-10 Pentek Carbon Block Water Filter Replacement

    $14.99 Retail Price:  $19.99
  • DUPONT-WFDWC40001

    DUPONT-WFDWC40001

    $22.99 Retail Price:  $29.99
  • DUPONT-WFDWC20001

    DUPONT-WFDWC20001

    $14.99 Retail Price:  $22.33
  • CRYSTAL-QUEST-CQE-RC-04020
  • PENTEK-QC10-CBRR

    PENTEK-QC10-CBRR

    $23.99 Retail Price:  $36.79
  • AQUA-PURE-EP35R

    AQUA-PURE-EP35R

    $92.99 Retail Price:  $123.04
  • C-LC Aqua-Pure Undersink Filter Replacement Cartridge

    C-LC Aqua-Pure Undersink Water Filter Cartridge

    $51.99 Retail Price:  $65.54
  • AQUAPURE-C-CS-S

    AQUAPURE-C-CS-S

    $37.99 Retail Price:  $42.54
  • AQUAPURE-C-COMPLETE

    AQUAPURE-C-COMPLETE

    $65.99 Retail Price:  $88.54
  • CULLIGAN-750R-D

    CULLIGAN-750R-D

    $15.99 Retail Price:  $17.93
  • 1000R-D Culligan Level 3 Undersink RV and Marine Icemaker and Drinking Water Filter
  • CB3

    CB3

    $36.99 Retail Price:  $44.84
  • AQUAPURE-AP-DW85

    AQUAPURE-AP-DW85

    $46.99 Retail Price:  $55.19
  • AQUAPURE-AP-DW70

    AQUAPURE-AP-DW70

    $55.99 Retail Price:  $56.34
  • DW-2000-RB American Plumber Replacement Filter Cartridge
  • FXUVC GE SmartWater Undersink Filter Replacement Cartridge
  • FXSVC

    FXSVC

    $69.99
  • FQSVF

    FQSVF

    $51.99
  • FQSLF

    FQSLF

    $37.99 Retail Price:  $47.60
  • P-250A Pentek Undersink Filter Set

    P-250A Pentek Undersink Filter Set

    $23.99 Retail Price:  $31.27
  • PENTEK-P-250

    PENTEK-P-250

    $23.99 Retail Price:  $31.84
  • PENTEK-GAC-5

    PENTEK-GAC-5

    $8.19 Retail Price:  $11.72
  • FILTRETE-4US-MAXS-F01

    FILTRETE-4US-MAXS-F01

    $19.99 Retail Price:  $25.29
  • FILTRETE-4US-MAXL-F01

    FILTRETE-4US-MAXL-F01

    $27.99 Retail Price:  $36.79
  • EV9300-15 Everpure proseries 1500 Replacement Filter Cartridge
  • DOULTON-W9222900

    DOULTON-W9222900

    $39.99 Retail Price:  $52.73
  • DOULTON-W9142010

    DOULTON-W9142010

    $15.99 Retail Price:  $18.39
  • DOULTON-W9123053

    DOULTON-W9123053

    $50.99 Retail Price:  $59.25
  • CULLIGAN-D-30

    CULLIGAN-D-30

    $18.99 Retail Price:  $21.26

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