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Undersink Water Filters & Systems

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.

Items 1 to 25 of 41 total

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  1. D-25 Culligan Under Sink Water Filter

    D-25 Culligan Under Sink Water Filter

    Fits under sink filter systems that use 10 x 2.5-inch filters Learn More
    $11.99 Retail Price:  $15.99
  2. AP510 AquaPure Water Filtration System

    AP510 AquaPure Water Filtration System

    3/8-inch NPT pipe size, 5 Micron. Quick Connect fittings make installation easy! Learn More
    $141.99 Retail Price:  $146.04
  3. US-600 Culligan Slim Undersink Filter System
  4. AP200 Aqua-Pure Undersink Filter System

    AP200 Aqua-Pure Undersink Water Filtration System

    Regular Price: $104.99

    Special Price: $87.05

  5. SFM2 OmniFilter Undersink Water Filter System
  6. QC10-GAC Pentek Undersink Quick-Change Filter System

    QC10-GAC Pentek Quick-Change Water Filter System

    $22.99 Retail Price:  $30.69
  7. QC10-TSGAC Pentek Undersink Quick-Change Filter System
  8. MATRIKX-1-10 KX Technologies MatrikX Undersink Filter Replacement Cartridge

    MATRIKX-1-10 KX Technologies MatrikX Undersink Filter Replacement Cartridge

    Fits any standard housing that uses 9 3/4-inch x 2 1/2-inch replacement filter cartridges Learn More
    $10.99 Retail Price:  $14.94
  9. CBR2-10R Pentek Undersink Filter Replacement Cartridge

    CBR2-10R Pentek Undersink Filter Replacement Cartridge

    Fits Pentek under-sink filter housings and any housing that uses standard 9 3/4-inch by 2 1/2-inch filter cartridges Learn More
    $17.99 Retail Price:  $21.95
  10. MATRIKX-CTO2-10 KX Technologies MatrikX Undersink Filter Replacement Cartridge

    MATRIKX-CTO2-10 KX Technologies MatrikX Undersink Filter Replacement Cartridge

    Fits any standard housing that uses 9 3/4-inch x 2 1/2-inch replacement filter cartridges Learn More
    $9.99 Retail Price:  $10.34
  11. MATRIKX-Pb1-10 KX Technologies MatrikX Undersink Filter Replacement Cartridge
  12. MATRIKX-Pb1-HD10 KX Technologies MatrikX Undersink Filter Replacement Cartridge

    MATRIKX-PB1-HD10 KX Technologies MatrikX Undersink Filter Replacement Cartridge

    Fits any standard housing that uses 9 3/4-inch x 4 1/2-inch replacement filter cartridges Learn More

    Regular Price: $59.99

    Special Price: $45.05

  13. 32-250-125-050 KX Technologies Replacement Filter Cartridge

    32-250-125-050 KX Technologies Replacement Filter Cartridge

    Fits most standard housings that accept 5-inch filters Learn More
    $9.99 Retail Price:  $10.34
  14. CBR2-10 Pentek Undersink Filter Replacement Cartridge

    CBR2-10 Pentek Undersink Filter Replacement Cartridge

    Fits any standard housing that uses 9 3/4-inch x 2 1/2-inch replacement filter cartridges Learn More
    $16.99 Retail Price:  $18.85
  15. Whirlpool WHKF-GAC Undersink Replacement Water Filter Cartridge

    WHKF-GAC Whirlpool Undersink Replacement Filter Cartridge

    Fits the Whirlpool WHKF-DUF Under Sink Filter Housing Learn More
    $17.99
  16. QC10-GACR Pentek Undersink Quick-Change Replacement Filter Cartridge

    QC10-GACR Pentek Quick-Change Replacement Water Filter

    Fits any Pentek Quick-Change Series of water filtration system heads Learn More
    $15.89 Retail Price:  $20.57
  17. QC10-TSGACR Pentek Undersink Quick-Change Replacement Filter Cartridge

    QC10-TSGACR Pentek Quick-Change Replacement Water Filter Cartridge

    Fits any Pentek Quick-Change Series water filtration system head Learn More
    $16.99 Retail Price:  $21.84
  18. TSGAC-10 Pentek Undersink Filter Replacement Cartridge

    TSGAC-10 Pentek Undersink Filter Replacement Cartridge

    Fits any standard housing that uses 9 3/4-inch x 2 1/2-inch replacement filter cartridges Learn More
    $19.39 Retail Price:  $24.60
  19. 47-55712G2 Water Factory Systems Replacement Filter Cartridge

    47-55712G2 Water Factory Systems Replacement Filter Cartridge

    Fits 3M Cuno Water Factory FaucetMATE FM-2-CTO two-stage system Learn More
    $42.59 Retail Price:  $51.28
  20. 47-5574704 Water Factory Systems FaucetMATE Carbon Block Filter

    47-5574704 Water Factory Systems FaucetMATE Carbon Block Filter

    Fits 3M Cuno Water Factory FaucetMATE FM DWS 1500 one-stage system Learn More
    $66.99 Retail Price:  $77.61
  21. CC-10 Pentek Undersink Filter Replacement Cartridge

    CC-10 Pentek Undersink Filter Replacement Cartridge

    Fits any standard housing that uses 9 3/4-inch x 2 1/2-inch replacement filter cartridges Learn More
    $12.99
  22. 20035 Hydrologic 4-Stage Reverse Osmosis Cartridge

    20035 Hydrologic 4-Stage Reverse Osmosis Cartridge

    Fits the Hydrologic EcoSpring water purification system Learn More
    $184.99 Retail Price:  $215.04
  23. D-28 Culligan Level 1 Undersink Filter Replacement Cartridge

    D-28 Culligan Level 1 Undersink Filter Replacement Cartridge

    Fits Culligan US-550, US-600, US-600A, and any brand of water filter system that uses standard 9 3/4 x 2 1/2 filter cartridges Learn More
  24. D-250A Culligan Undersink Filter Replacement Cartridge Set

    D-250A Culligan Undersink Filter Replacement Cartridge Set

    Fits the Culligan SY-2300, SY-2300S and SY-2650 systems and any brand of undersink water filter system that uses standard 9 3/4 x 2 1/2 filter cartridges Learn More
    $36.99 Retail Price:  $39.09
  25. D-20A Culligan Level 1 Undersink Water Filter Replacement Cartridge

Items 1 to 25 of 41 total

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