Call Toll-Free: 1-800-277-3458

My Cart:

0 item(s)
You have no items in your shopping cart.

Free Shipping over $39

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!
  • Our customer service team is guaranteed to answer your call!
  • You’re guaranteed to find expert help!

Learn more about our No Worries Guarantee

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.

32 Item(s)

Grid  List 

Set Descending Direction
  • D-25 Culligan Under Sink Water Filter

    D-25 Culligan Under Sink Water Filter

    $11.99 Retail Price:  $16.99
  • PENTEK-153017

    PENTEK-153017

    $11.29 Retail Price:  $15.28
  • 153018 Pentek Slim Line Filter Housing Sump - Clear

    153018 Pentek Slim Line Filter Housing Sump - Clear

    $18.99 Retail Price:  $21.84
  • PENTEK-153128

    PENTEK-153128

    $19.99 Retail Price:  $23.56
  • P1-5 Tier1 Sediment Filter Cartridge

    P1-5 Tier1 Sediment Filter Cartridge

    $2.99 Retail Price:  $5.74
  • P10-5 Tier1 Polypropylene Sediment Filter

    P10-5 Tier1 Polypropylene Sediment Filter

    $2.99 Retail Price:  $5.74
  • PENTEK-EP-5

    PENTEK-EP-5

  • US-UF3R Culligan Ultrafiltration Replacement Water Filter Cartridge Set
  • US-UF3 Culligan Ultrafiltration Drinking Water System

    US-UF3 Culligan Ultrafiltration Drinking Water System

    $155.99 Retail Price:  $254.14
  • CULLIGAN-D-20

    CULLIGAN-D-20

    $10.95 Retail Price:  $13.79
  • CULLIGAN-D-15

    CULLIGAN-D-15

    $17.99 Retail Price:  $25.29
  • CULLIGAN-D-10-TWIN

    CULLIGAN-D-10-TWIN

    $11.99 Retail Price:  $17.93
  • D-28 Culligan Level 1 Undersink Filter Replacement Cartridge
  • CULLIGAN-US-EZ-4

    CULLIGAN-US-EZ-4

    $77.99 Retail Price:  $86.24
  • CULLIGAN-US-EZ-3

    CULLIGAN-US-EZ-3

    $68.99
  • CULLIGAN-US-EZ-1

    CULLIGAN-US-EZ-1

    $35.99 Retail Price:  $45.76
  • CULLIGAN-US-600

    CULLIGAN-US-600

    $35.99 Retail Price:  $41.39
  • SY-1000 Culligan Water Filtration System
  • PENTEK-P-250

    PENTEK-P-250

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

    PENTEK-GAC-5

    $8.19 Retail Price:  $11.72

32 Item(s)

Grid  List 

Set Descending Direction
Scroll To Top