FreshPoint 4-Stage Under Counter Reverse Osmosis System

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FreshPoint 4-Stage Under Counter Reverse Osmosis System

Did you know you can have better tasting, better smelling and more refreshing water streaming through your faucet on-demand? Meet the Pentair FreshPoint 4-Stage Under Counter Reverse Osmosis System. This system is designed to transform ordinary tap water into clearer, more refreshing water with the turn of your tap by reducing a broad range of impurities found in your home water before polishing it off to give your water a better taste.
  • Save money and drink water with a clearer conscious by eliminating the need for bottled water
  • Monitored system alerts you when it is time to change the membrane
  • Reduces up to 98% of PFOA/PFOS
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FreshPoint 4-Stage Under Counter Reverse Osmosis System
FreshPoint 4-Stage Under Counter Reverse Osmosis System
SKU#: Product2G_855387246565


Benefits of a Drinking Water Filter

When you can enjoy refreshing, high quality water right from your home, there’s no need to waste money on expensive plastic bottled water. The Pentair FreshPoint 4-Stage Reverse Osmosis System is designed to deliver worry-free water in a click. This system features patented Diamond Flow technology, which combines two filtration technologies into one to give you cleaner, high quality, chug-worthy water. And, with Green RO technology, the FreshPoint GRO-450 produces less water waste, leaving you – and your water – with a clear conscience. Other features include:

  • Comes ready to install with a dedicated air-gap faucet,
  • Air-gap faucet prevents ‘bad’ water from backing up into ‘good’ water if there is a clog in the drain
  • Polishes water to give it a better taste
  • Storage tank gives you ready-to-drink water on-demand
  • High-efficiency membrane technology delivers up to 75 gallons per day
  • Integrated booster pump for low water pressure applications increases tank fill rate (GRO-475BP only)
  • Effortless click-in installation that saves you time
  • Color-coded cartridges make filter change outs hassle-free
  • Less water waste than other RO systems in the market
  • Uses no harmful chemical additives

Better Drinking Water On-Demand


No Plastic Bottle Waste


Hassle-Free Installation & Maintenance


Peace of Mind

How it works

4 stage system

Chlorine Taste & Odor Reduction

Tap water passes through Pentair’s patented Diamond Flow technology – a combination of two technologies in one: a carbon block designed to reduce taste and odors, and a poly spun shell wrapped around the carbon block to reduce sediment and help protect the life of the carbon block.

Contaminant and Impurities Reduction

Water then moves through the reverse osmosis membrane which reduces a broader range of contaminants and impurities found in your home water. The membrane separates the water containing contaminants and sends it down the drain while pushing the more pure water in to the next stage. Pentair’s patented Green RO (GRO) membrane reduces the amount of water waste compared to standard members in the market.

Twin Carbon Block Protection

Water then runs through a carbon block with a lead reduction media for increased contaminant and lead reduction.

Better Tasting Water

Water then passes through the final stage, a granular activated carbon (GAC) filter, which reduces any remaining contaminants while “polishing” the water to give you better tasting water. This water is then stored in a 4.4 gallon storage tank that hold the water until you are ready for clearer, better tasting water.

Compare Reverse Osmosis Systems

  FreshPoint 3-Stage RO System FreshPoint 4-Stage RO System
FreshPoint 5-Stage RO System
Arsenic X X X
Dissolved Solids
Chlorine Taste & Odor X X X
  X X
  X X
Volatile Organic Chemicals
Dedicated Side Faucet Included
Cartridge & TDS Timers
NSF 42 & 58 Certified
NSF 53 Certified
  X X
Booster Pump Included (select models only)
X X  
Storage Tank Included
Explore Products FreshPoint 3-Stage RO System This Product FreshPoint 5-Stage RO System



Item #ImageTreatment TechnologyStagesEstimated Life (months)Faucet FinishMonitor/PumpSide Faucet RequiredInstallation LocationEst. Membrane Life
161151 Reverse Osmosis|Membrane 4 6 to 12 Filter Cartridges 18 Membrane Chrome Includes TDS Filter Monitor Yes Undersink 18 months

What’s Included

  • Filter System with Cartridge
  • Air Gap Side Faucet
  • Storage Tank
  • Installation Kit
  • Owner’s Manual / Installation Guide

Installation Information

Recommended Installation: DIY + or Professional Installation

  • Choose a mounting location suitable to support the full weight of the system when operating
  • Install vertically with the cartridge hanging down
  • System may be installed with cartridge flush to the baseboard if desired as the mechanical assist level pushes cartridges straight out

Operation Tips

  • Replace pre/post filters every year
  • Replace RO membrane every 18 months
  • Place replacement cartridges in proper sequence utilizing color-coded shapes
  • System designed with integrated check valves so cold water line does not need to be shut-off to perform cartridge change-outs

Be Confident With A Comprehensive Under Counter Filtration System

5 stage RO system

The Pentair FreshPoint 5-Stage Reverse Osmosis System is our most comprehensive under counter filtration system, using 5 unique steps to reduce a broad range of contaminants and impurities found in your home water, and polishes it off to give you better tasting water.

  • Effectively reduces up to 99.99% of E.coli, Cryptosporidium, and Giardia
  • Double lamp life of standard UV systems with revolutionary lamp technology

Water Education Center

Lead is harmful even in small doses, as the EPA attests. The EPA has set the maximum contaminant level goal for lead in drinking water at zero. Learn about how lead gets into your water and which products are recommended to reduce its effects.

Learn About Lead

Beyond taste and odor, the volatile chemical nature of chlorine means it can react and form potentially harmful byproducts. But, how much chlorine is ‘safe’?

Learn About Chlorine

The benefits of reverse osmosis water systems can transform your drinking water, but exactly is reverse osmosis and how does it work?

Learn About RO

Learn more about common water problems and how to tackle them in our Water Education Center.
Applies to select products purchased on or

*NSF/ANSI Standard 53 certified to reduce cysts such as Cryptosporidium and Giardia by mechanical means

Contaminants reduced when used as instructed. For details, see ‘Certifications’ tab.

EPA EST. NO. 082989-CHN-001
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