Discount Water Filters and Air Filters at Discount Filter Store.com

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Under Sink Water Filter Replacement Cartridges

Don’t settle for a replacement under sink water filter cartridge that simply fits, find one designed and manufactured specifically for your under sink water filter system.

Discount Filter Store has one of the largest selections of undersink filter cartridges. With under sink filter cartridges available in over 15+ different filter medias, 8+ different sizes (5x2½ - 20x4½), and a wide variety of filter life’s ranging from 250 gallons to 50,000+ gallons, you’re guaranteed to find the under sink water filter system and/or replacement cartridges you need. Choose from hundreds of under sink water filter cartridges from some of the industry’s top brands including American Plumber, Crystal Quest, Pentek®, Culligan®, GE, Aqua-Pure®, Whirlpool®, and more.

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AP101T 3M Aqua-Pure Whole House Water Filtration System
HD-950 Culligan Whole House Water Filter System
HF-150 Culligan Whole House Filter System
HF-360 Culligan Valve-In-Head Whole House Filter System
CFS01S Cuno Whole House Water Filter Housing
CFS02S Cuno Whole House Water Filter Housing
3WH-HD-S01 3M Filtrete Whole House Sump Filter System
3WH-STD-S01 3M Filtrete Whole House Sump Filter System
4WH-QCTO-S01 3M Filtrete Whole House Water Filtration System
4WH-QS-S01 3M Filtrete Whole House Water Filtration System
HFPP-1-WPR10 Pentek Big Blue Whole House Water Filter Housing (10 x 4.5)
HFPP-112-PR10 Pentek Big Blue Whole House 10 inch Filter Housing
HFPP-34-PR-10 Pentek Big Blue Whole House 10 inch Filter Housing
The UV-110-1 Pentek UV System has been discontinued by the manufacturer
The UV-120-1 Pentek UV System has been discontinued by the manufacturer
UVBB-120-1 Pentek UV System
UVS-110-1 Pentek UV System
650388 Trojan UV Max UV Water Purification System
650651 Trojan UV Max UV Water Purification System
650652 Trojan UV Max UV System
OmniFilter U25 Whole House Water Filtration System
166227 Pentek Big White Water Filter Housing Assembly (3/4-inch, #20)
3G-STANDARD-34-PR10 Pentek Whole House Water Filtration System Housing (10 inch)
3G-STANDARD-34-PR20 Pentek Whole House Water Filtration System Housing (20 inch)
3G-STANDARD-CLEAR-34-PR10 Pentek Whole House Water Filtration System Housing (10 inch)
BBFS-22 Pentek Two Housing Filter System
BBFS-222 Pentek Three Housing Filter System
BFS-201 Pentek Slim Line Filter Housing with Pressure Relief Valve
BIG-CLEAR-LX-10 Pentek Big Clear Whole House 10 inch Filter Housing
W20FFPH1CBPR Watts Flowmatic Big Clear Whole House Water Filter Housing
W10FFPH1CBPR Watts Full Flow Whole House Water Filter Housing
S8Q-PA Sterilight UV Water Sterilizer System - 10 GPM
SC-740 Sterilight UV Disinfection System – 40 GPM
UVBB-3 PURA UV Disinfection System
IHS12-D4 Trojan UV Disinfection System
S12Q-PA Sterilight UV Water Sterilizer System
650694 Trojan UVMAX D4 UV Disinfection System
650682 Trojan UVMAX E4 UV Disinfection System
650647 Trojan UVMAX Pro 10 UV Disinfection System
650659 Trojan UVMAX Pro 30 UV Disinfection System
SPV-950 Sterilight UV Water Sanitizer System
650687 Trojan UVMAX F4 Plus UV Disinfection System
SPV-740 Sterilight UV Water Sterilizer System
AP802 3M Aqua-Pure Whole House Water Filtration System
SST1HA 3M Aqua-Pure Stainless Steel Water Filtration System Housing
650695-R D4+ Viqua Home Plus UltraViolet Water Disinfection System
650682 E4 Viqua Professional UltraViolet Water Disinfection System
650683 E4+ Viqua Professional Plus UltraViolet Water Disinfection System
650659 PRO30 Viqua Professional Plus UltraViolet Water Disinfection System
S5Q-PV Viqua Specialty UltraViolet Water Disinfection System
S8Q-PA Viqua Home UltraViolet Water Disinfection System
IHS12-D4 Viqua Home Plus UltraViolet Water Disinfection System
IHS22-D4 Viqua Home Plus UltraViolet Water Disinfection System
AC-813 Robitussin Duracraft Humidifier Replacement Wick Filter
UC100E1030 Honeywell 36W Replacement Lamp for UV Air Treatment System
UC100E1006 Honeywell UltraViolet Bulb Replacement
Viqua VT4-DWS11 Ultraviolet Filtration System
650730-004 Viqua LightWise Upgrade Kit for Pro 10 Systems
650730-005 Viqua LightWise Upgrade Kit for Pro 20 Systems
VT1 Viqua Point-Of-Use UltraViolet Disinfection System
VT1-DWS Viqua UltraViolet Drinking Water Disinfection System

16 Item(s)

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  • W5CIP478 American Plumber Undersink Compact Filter Replacement Cartridge (2-Pack)
  • 750R-D Culligan Level 1 Undersink RV and Marine Icemaker and Drinking Water Filter
  • W9120145 Doulton Replacement Candle Set (6-Pack)

    W9120145 Doulton Replacement Candle Set (6-Pack)

    $106.00
    MSRP: $118.30
    Save 10%
  • W9120562 Doulton Sterasyl Undersink Ceramic Candle Replacement Filter Cartridge
  • FXUTC GE SmartWater Undersink Filter Replacement Cartridge

    FXUTC GE SmartWater Undersink Filter Replacement Cartridge

    $23.69
    MSRP: $35.99
    Save 34%
  • EPM-10 Pentek Undersink Filter Replacement Cartridge

    EPM-10 Pentek Undersink Filter Replacement Cartridge

    $9.99
    MSRP: $13.99
    Save 29%

    Out of stock

  • QC10-GACR Pentek Undersink Quick-Change Replacement Filter Cartridge
  • 47-55708G2 Water Factory Systems Replacement Filter Cartridge
  • MATRIKX-Pb1-10 KX Technologies MatrikX Undersink Filter Replacement Cartridge
  • OMB934-1L Omnipure Alpha Series Undersink Filter Replacement Cartridge
  • C1 Pentek Undersink Filter Replacement Cartridge

    Pentek C1 Undersink Water Filter Replacement Cartridge

    $14.99
    MSRP: $19.99
    Save 25%
  • CBC-5 Pentek Undersink Filter Replacement Cartridge

    CBC-5 Pentek Undersink Filter Replacement Cartridge

    $10.29
    MSRP: $15.99
    Save 36%
  • E5620 Omnipure E-Series Everpure Compatible Filter

    E5620 Omnipure E-Series Everpure Compatible Filter

    $20.09
    MSRP: $41.99
    Save 52%

    Out of stock

  • KX Matrikx CTO2-12 Reverse Osmosis Carbon Block Replacement Filter
  • GAC-20 Pentek Comparable Granular Activated Carbon Water Filter by Tier1
  • RFC-93 Whole House Filter Replacement Cartridge by Tier1

16 Item(s)

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