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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.

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  1. DUPONT-WFDWC40001

    DUPONT-WFDWC40001

    $22.99 Retail Price:  $29.99
  2. CB1-10 Pentek Carbon Block Water Filter Replacement

    CB1-10 Pentek Carbon Block Water Filter Replacement

    Fits most standard 10-inch x 2.5-inch housings Learn More
    $14.99 Retail Price:  $19.99
  3. P-12 Under Sink Water Replacement Filter Cartridge by Tier1
  4. APDWS1000 Undersink Water Filter System by Aqua-Pure

    APDWS1000 Undersink Water Filter System by Aqua-Pure

    Fits most standard water lines Learn More
    $394.99
  5. DUPONT-WFDW120009W

    DUPONT-WFDW120009W

    $39.99 Retail Price:  $52.91
  6. DUPONT-WFDWC70001

    DUPONT-WFDWC70001

    $33.99 Retail Price:  $45.85
  7. DUPONT-WFDWC20001

    DUPONT-WFDWC20001

    $14.99 Retail Price:  $22.33
  8. DUPONT-WFHDC8001
  9. CMB-510-HF Advanced Water Products 10-inch x 4.5-inch Replacement Sediment Filter

    Advanced Water Products CMB-510-HF Whole House Filter for IHS12-D4 System

    Made for the Trojan UV Max IHS12-D4 Water Disinfection System Learn More
    $16.99 Retail Price:  $25.86
  10. CMB-520-HF Advanced Water Products 20-inch x 4.5-inch Replacement Sediment Filter

    Advanced Water Products CMB-520-HF Whole House Filter for IHS22-D4 System

    Made for the Trojan UV Max IHS22-D4 Water Disinfection System Learn More
    $27.99 Retail Price:  $39.97
  11. C2-02 Advanced Water Products 20-inch x 4.5-inch Replacement Carbon Whole House Filter

    C2-02 Advanced Water Products Replacement 20-inch x 4.5-inch Carbon Whole House Filter

    Fits most 20-inch x 4.5-inch filter housings, including the Trojan UV Max IHS12-D4 and IHS22-D4 Water Disinfection Systems Learn More
    $54.99 Retail Price:  $89.00
  12. 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:  $16.99
  13. OmniFilter RS12-SS6-05 Polypropylene Sediment Filter

    OmniFilter RS12-SS6-05 Polypropylene Sediment Filter

    Standard 10 inch by 2.5 inch size fits many common filter housings Learn More
    $4.99 Retail Price:  $8.04
  14. Pentek QC10-CB1R Carbon Block Quick Change Filter

    Pentek QC10-CB1R Carbon Block Quick Change Filter

    Proprietary design fits Pentek QC systems exclusively Learn More
    $22.99 Retail Price:  $31.04
  15. PENTEK-153017

    PENTEK-153017

    $11.29 Retail Price:  $15.28
  16. OMNIPURE-OMB934-1L

    OMNIPURE-OMB934-1L

    $14.99 Retail Price:  $21.38
  17. OMNIFILTER-SFM2
  18. OMNIFILTER-RS19
  19. 153018 Pentek Slim Line Filter Housing Sump - Clear

    153018 Pentek Slim Line Filter Housing Sump - Clear

    Fits the cap of CSL-CI and CSL-C1 10-inch Slim Line Clear Housings Learn More
    $18.99 Retail Price:  $21.84
  20. OB1-S-05 OmniFilter Undersink Filter System

    OB1-S-05 OmniFilter Undersink Filter System

    Fits standard 3/4-inch MPT lines Learn More
  21. CBF2-S-05 OmniFilter Undersink Filter System

    CBF2-S-05 OmniFilter Undersink Water Filtration System

    Built to fit onto any standard 1/2-inch NPS supply thread Learn More
  22. KX-TECHNOLOGIES-32-250-125-050

    KX-TECHNOLOGIES-32-250-125-050

    $9.99 Retail Price:  $10.34
  23. KX-MATRIKX-PB1-HD10
  24. KX-MATRIKX-PB1-10
  25. KX-MATRIKX-CTO2-10

    KX-MATRIKX-CTO2-10

    $9.99 Retail Price:  $10.34

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