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Moen Solutions

Reverse Osmosis: Four-Stage Under-Sink Reverse Osmosis Advanced Water Filtration System

Moen® is continuing to enhance the experiences you have with comprehensive water filtration solutions that allow you to enjoy every sip right from your kitchen sink. Filtration options include both under-sink systems and above-deck faucets that elevate style and functionality while allowing you to customize your system to meet your exact needs and preferences. Moen water filtration products can remove potentially harmful contaminants from your tap water and are better for the environment by helping to reduce plastic waste.

The advanced 4-Stage Reverse Osmosis System reduces unhealthy contaminants like lead and chlorine while keeping healthy minerals. Plus, it eliminates the need for plastic bottled water for a more positive impact on the environment.

Easy Installation: Includes all of the parts required for installation,
making it DIY-friendly

Provides the best-quality drinking water: Reduces contaminants, including arsenic, fluoride, TDS, bacteria, viruses, lead, mercury, chlorine, pharmaceuticals, and over 95% of perfluorooctanic acid (PFOA) and perfluoro octane sulfonate (FOS) in drinking water

Maintains water pressure: Provides uninterrupted, comfortable water pressure during peak use

Compatible with Moen® drinking water faucets: The system requires a Moen (RO-compatible) SIP™ Drinking Water Faucet with an integrated air gap models F7660,F7620, and F7600

Eco-conscious solution: Eliminates the need for plastic water bottles
by providing fresh, clean water at the sink

What is Reverse Osmosis?

Reverse osmosis uses air pressure to force water through a semipermeable membrane. As a result, only water molecules can pass through the membrane’s numerous microscopic pores, which have a pore size of roughly 0.0001 microns.

This process can effectively reduce microscopic water impurities, including chlorine, phosphate, nickel, sulfate, mercury, lead, barium, calcium, arsenic, sodium, nitrates, and others. Reverse osmosis filtration can even help eliminate microplastics sometimes found in tap water.

Moen's 4 Stage Reverse Osmosis Filtration System: F9900Snag_99c54b.png*Use with the Sip Drinking Faucet Models- F7660, F7620, F7600. 

The Four Stage Filter System Explained: For more information click here
Details F9910 F9920 F9930 F9940
Filter Stage Stage 1  Stage 2  Stage 3  Stage 4 
Type Sediment: pre-filter Pre-Membrane: Refining carbon filter Membrane: High-efficiency reverse osmosis membrane Post-Membrane: Refining Carbon filter
Life Cycle 6 Months 6 Months 1 to 3 years depending on water quality 12 Months

Q: What are the faucet options available to use with the F9900 Reverse Osmosis sku?

A: NEW Sips are compatible with RO (integrated air gap)

  • 3-in-1 pulldowns are compatible with reverse osmosis, consumer MUST use an airgap 105895 SERIES Available for purchase on

Q: Can the F9900 Reverse Osmosis Filtration sku be used with the older version of the Moen SIP faucets?

A: No, due to brass + no air gap

Q: What is the flow rate for the Reverse Osmosis unit when used with (a) 3-in-1 Pulldown, and (b) SIP?

A: 0.6GPM for both

Q: Flow Restrictor installation/what happens if it is not installed properly)

A: Water will flow out of airgap and will cause leak

Q: What are the replacement filter options, and how often should these be changed?

A: Here are the guidelines

  • F9910 + F9920: 6 months
  • F9930 + F9940: 12 months

· Labels have a date of install for customer to fill in, to help with maintenance

Q: Can I buy the Filters as a 4 pack?

A. No, the replacement Filters are sold separately.

Q: How long will does it take for the Reverse Osmosis Tank to fill up?

A: Approximately 2 hours- With the water supply on for 2 to 3 hours, the tank will fill up with filtered water. The faucet/SIP does not need to be on, just the water supply itself.

Recommended Articles:

Troubleshooting Faucet Symptoms:

Filter and Parts Replacement:

Care and Maintenance:  



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