Watts Quick-Change 100 GPD Four-Stage Reverse Osmosis System

SKU: WQC4RO13-100MT
$801.50
$724.95
$724.95
Unavailable
per item

​The Watts 100 GPD Quick-Change Four-Stage Reverse Osmosis System is designed for those who desire easy installation, operation and maintenance. The system’s compact design takes up relatively little space under your sink, and it’s very easy to change the filter cartridges. 


    • Automatic shut off when cartridges are removed

    • Disposable 13" proprietary encapsulated filter & membrane cartridges

    • Cartridges have double O-rings to prevent leaks

    • No need to disconnect tubing when replacing cartridges  

    • Quick-Connect fittings on inlet and outlet ports

    • Integrated check valves between cartridges and membrane prevent back-flow

    • Metal or plastic water storage tank options available

    • Chrome top-mount faucet is included

    • Installation kit is included


NOTE: Prices for all Watts products now include a markup for sales tax charged by Watts.


NOTE: All models qualify for free shipping within the continental U.S.


See other reverse osmosis systems here.


The Watts 100 GPD Quick-Change Four-Stage RO System includes four stages of treatment:

     • Stage One -- Sediment Pre-Filtration: A five micron sediment filter traps dirt, sediment, rust and other particulate matter. Filter life is about 6-12 months (depending on use and water quality).
     • Stage Two -- Carbon Pre-Filtration: A carbon block filter is used to improve taste and odor and to remove chlorine and other organic chemicals that can have a negative effect on the RO membrane. Filter life is about 6-12 months (depending on use and water quality).
     • Stage Three -- RO Membrane Filtration: Semi-permeable membrane will remove salts, minerals, metals, bacteria, viruses, cysts, and more so only high quality water is sent to the storage tank. Membrane life is about 24-30 months (depending on use and water quality).
     • Stage Four -- Carbon Post-Filtration: A granular activated carbon cartridge provides the final polishing to remove any unpleasant taste and odors. The result is great tasting drinking water. Filter life is about 12 months (depending on use and water quality).
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Spare and replacement filter elements are available and may be ordered separately.

     **  Watts Quick-Change 13" Sediment Pre-Filter Replacement Cartridge (Red)
     **  Watts Quick-Change 13" Carbon Block Pre-Filter Replacement Cartridge (Yellow)
     **  Watts Quick-Change 13” Granular Activated Carbon Post-Filter (Blue)
     **  Watts Quick-Change 13” 100 GPD Reverse Osmosis Membrane (Green)
     **  Watts 13" Replacement Cartridge Bundle


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