New Product

SmartFlow Reverse Osmosis

5 out of 5 Customer Rating

High-efficiency reverse osmosis system removes up to 99.99% of 90 contaminants, including fluoride, arsenic, chlorine, and lead.

  • In Stock
100357817 AQ-SFRO-BN
Select Faucet Finish: Brushed Nickel
$224.99 $449.99 MSRP
Water For Life Price
$224.99 50% OFF + Free Shipping!
Benefits of Using a Reverse Osmosis Water Filter
Delicious Taste
Peace of Mind
Get clean, healthy water by reducing 90 contaminants, including fluoride, arsenic, chlorine, lead, PFOA/PFOS, cysts, microplastics, and more.
Goodbye Fluoride
Unlike other RO systems, ours includes a Remineralizer that restores beneficial minerals for healthier, delicious water.
Healthier Drinking Water
No Added Chemicals
Rest easy knowing that no chemicals are added during the filtration process.
Fast Water Flow
Water You Can Trust
WQA tested and certified to NSF/ANSI Standards 42, 53 (includes P473), 58, 401, and CSA B483.1.
Easy Filter Replacement
Make a difference with this sustainable, eco-friendly solution that replaces the equivalent of 2,750+ plastic water bottles per set of filters.
Premium Finishes
Your Culinary Secret
Filtered water produces more natural flavors for amazing results in the kitchen. Leave your friends wondering about your best kept secret.
How It Works
filter image
Ultimate Purity
The power of Claryum® technology and reverse osmosis combine to reduce 90 contaminants, including chlorine, lead, fluoride, microplastics, PFOA/PFOS, and pesticides for optimum health and hydration.
Ultimate Purity
The power of Claryum® technology and reverse osmosis combine to reduce 90 contaminants, including chlorine, lead, fluoride, microplastics, PFOA/PFOS, and pesticides for optimum health and hydration.
Innovative Technology
Selective Claryum® Filtration
Claryum® Technology
Four different methods of advanced filtration work together to reduce the maximum number of contaminants.
Reverse Osmosis Technology
Reverse Osmosis Technology
One of the most effective water filtration methods to reduce fluoride. Also tackles nitrates, nitrites, lead, radium, and arsenic.
Adds back healthy minerals that are lost in the reverse osmosis process to improve water pH balance for optimally alkaline drinking water.
SmartFlow™ Technology
SmartFlow™ Technology
Our patented technology provides you with more pure water, less water waste, and longer filter life than the average RO system.
Air Gap Faucet
All-Metal Air Gap Faucet
Available in four designer finishes, the available premium all-metal air gap faucet prevents backflow into your filter system.
Easy Replacement
Easy Filter Replacements
Expertly engineered for easy replacement. No need to disconnect hoses or water lines — simply twist out and replace.
This system comes with a 2-Year Limited Warranty and a 90-Day Satisfaction Guarantee so you can be confident in your purchase.
nsf image

WQA tested and certified to NSF/ANSI Standards 42, 53, 58, 401, and CSA B483.1 for the claims specified on the Performance Data Sheet.

Whole Health, Pure Performance
This filter removes up to:
Asbestos and Cysts
Lead, VOCs, Microplastics
Chlorine, Chloramines, Arsenic, Pesticides, Herbicides
Introducing the SmartFlow™ Reverse Osmosis, Aquasana's brand-new, high-efficiency reverse osmosis system that provides you with optimum health and hydration. This RO system combines Aquasana's Claryum® filtration technology with reverse osmosis technology to remove up to 99.99% of 90 contaminants, including fluoride, arsenic, lead, chlorine, microplastics, PFOA/PFOS, and more. The SmartFlow™ Reverse Osmosis boasts one of the highest certified contaminant removal rates of all reverse osmosis systems on the market. In fact, it’s certified to reduce 89 more contaminants than Amazon’s top-selling RO system is certified to reduce.*
Featuring our patented SmartFlow™ technology, this system provides you with more pure water, less water waste, and longer filter life than the average RO filter. The SmartFlow™ Reverse Osmosis water filter boasts a 57% greater efficiency percentage and a 93% higher daily production rate than our previous reverse osmosis system.
The SmartFlow™ Reverse Osmosis is tested and certified by WQA to NSF/ANSI Standards 42, 53 (includes P473), 58, 401, and CSA B483.1 to effectively reduce 90 contaminants, including 90% of fluoride. It’s also certified to reduce 99.99% of cysts, 99.9% of asbestos, 99% of lead, VOCs, and microplastics, and 96% of chlorine, chloramines, arsenic, pesticides, and herbicides — all while restoring healthy minerals that other reverse osmosis systems remove, providing you with optimum health and hydration.
The SmartFlow™ Reverse Osmosis features a multi-stage filtration process to ensure maximum contaminant removal.
Stage 1: Carbon Block: Reduces chlorine, taste, and odor prior to reverse osmosis filtration.
Stage 2: SmartFlow™ Membrane: Ultra-efficient, patented SmartFlow™ membrane technology reduces fluoride, nitrates, nitrites, arsenic, PFOA/PFOS, and more.
Stage 3: Advanced Carbon Block: Claryum® filter block ensures maximum contaminant removal. Activated and catalytic carbon filtration combines with Ion-exchange and sub-micron filtration to tackle lead, microplastics, VOCs, mercury, and more.
Stage 4: Remineralizer: Remineralizes water to add back healthy, beneficial amounts of minerals that are lost in the reverse osmosis process. Improves pH balance and water alkalinity.
With the combined power of reverse osmosis, Claryum® filtration, and remineralization you have immediate access to clean, healthy water for drinking, cooking, washing your vegetables, and more.
The SmartFlow™ has been designed to provide ultra-powerful filtration in a more compact design. A smaller tank size and smartly-designed chassis means this system takes up less under sink space than the leading reverse osmosis unit.
Our genuine and certified reverse osmosis filter replacements are engineered for the easiest replacement. No need to disconnect hoses or water lines — simply twist out and replace. The SmartFlow™ Reverse Osmosis Carbon and Claryum® Filter Replacements will last for 365 gallons or up to 6 months. The Remineralizer Replacement will last for 6 months, as well. Our SmartFlow™ Reverse Osmosis Membrane Replacement will last for 12 months.
The available all-metal dedicated faucet comes in four finishes — Brushed Nickel, Chrome, Matte Black, and Oil Rubbed Bronze — so you can match your kitchen décor. We also offer a “No Faucet” option so you can use your own air gap faucet.
Aquasana’s SmartFlow™ Reverse Osmosis features a reliable 0.8 gallons per minute (gpm) flow rate to deliver clean, healthy water.
*As of 7/7/2023.
Membrane Production:
51.4 gpd
Membrane TDS Reduction:
Daily Production Rate:
25.7 gallons
Operating Pressure:
40-100 psi
Operating Temperature:
Manifold Dimensions:
12.93" x 4.5" (H x W)
Tank Dimensions:
13.74" x 9.06" (H x D)
Always use genuine, certified Aquasana replacements for continued contaminant removal and system performance.
replacement filter
SmartFlow™ Reverse Osmosis Carbon Block and Advanced Carbon Block
Replace every 6 months.
Ensures maximum contaminant removal for up to 6 months
replacement filter
SmartFlow™ Reverse Osmosis SmartFlow™ Membrane Replacement
Replace every 12 months.
Ultra-efficient, patented technology reduces fluoride, arsenic, PFOA/PFOS, and more
replacement filter
SmartFlow™ Reverse Osmosis Remineralizer Replacement
Replace every 6 months.
Improves pH balance and water alkalinity
Help & Support
  • How to Install Aquasana's SmartFlow™ Reverse Osmosis Water Filter
video main image play icon
SmartFlow™ Reverse Osmosis Under Sink System
replacement filter Need a replacement filter?
Water filters are an effective way to provide your household with healthy, great-tasting water. However, waiting too long to replace your filter can cause your system to stop working, and it may even become a source of bacteria or mold. Prevent filter contamination by replacing it on time.
water drops Water For Life®
Get filters auto-delivered right when you need them – plus receive 15% OFF the price of the replacement filters, free shipping, and an extended warranty on your filtration system. Our no-contract Water for Life® program makes filter replacements simple and cost-effective!
Ratings & Reviews
Customer Q&A
Aquasana FAQs
1. Do I need a plumber to install the system?
Depending on your skills and experience, we recommend hiring a professional to install your reverse osmosis system. Installation does require drilling into your pipes, which is not recommended for individuals unfamiliar with plumbing and permanent appliance installation. Please read through the owner's manual carefully before attempting to install the system. If you have any questions or need assistance, our technical support representatives at 866-662-6885 can guide you through the installation process. Or, follow along with our installation video.
Drilling into your water pipes is required to install the Aquasana SmartFlow™ Reverse Osmosis water filter. For an easy installation that requires zero drilling, we recommend our Claryum® Direct Connect filter. This DIY install filter connects directly to your cold water line. So, no drilling or altering your plumbing is required. Aquasana also has a countertop option that offers the same professional grade filtration as our under sink options, the Clean Water Machine.
The faucet included with the Aquasana SmartFlow™ Reverse Osmosis is expertly designed to work with our reverse osmosis system. If you choose to use another reverse osmosis air gap faucet, please consult the Owner's Manual, and we recommend you seek the help of a plumber to ensure proper installation. In order to maintain the NSF/ANSI 58 certification of this product, the drain line installation must comply with the standard requirements of a vertical air gap of two pipe diameters or 25 mm (1 in), whichever is larger, or an air gap faucet that is tested and certified against NSF/ANSI 58 must be included.
When RO membranes are manufactured, there is a preservative used to protect the membrane fibers from damage. This preservative needs to be flushed out after the system is installed and prior to drinking water from the RO system. In addition, the RO holding tank should be sanitized with 3mL of bleach during the installation. It is important to follow the flushing instructions in the Owner’s Manual to ensure all bleach from the water tank is flushed before consumption.
Turn off the cold water valve underneath the sink and depressurize the system by opening the faucet and releasing all the water. Ensure color-coded tubing is installed into the correct placement on the system. Tubing should be cut straight across, not at an angle. Check to ensure the tubing is fully inserted into the system manifold until tubing can no longer be pushed in. Once all tubing is installed and the system is reconnected, turn the water valve on and check for leaks. Check that the filter cartridges are in the locked position. They should be rotated fully clockwise until the handles are horizontal.

Ensure water is flowing from the dedicated faucet. If the water is flowing, close the faucet and check the water pressure in one hour. This will allow enough time for the tank to fill.

If you’re still experiencing slow water pressure and it has been over six months since changing the filter, we recommend changing your filter.

A visual way to ensure you are inserting the tubing all the way into the quick connect is to put a mark 5/8” up from the end of the tube; the tube should be inserted that far. After installing the system and flushing, leaks may not appear. Ensure your system is not leaking by checking post-installation periodically. Recheck an hour after the tank is filled with water, which takes about an hour.
You may hear quiet gurgling from the airgap faucet or the sound of water refilling the tank. During set up you may hear louder sputtering from air leaving system.
No, the guides to help with insertion can only fit in their correct cartridge slot.
The cartridge handle should be horizontal and handle labeling should be right side up.
Carbon fines can be present in your water when new filters are first installed and will go away after the flushing cycle.

Stage 1 (Carbon Block) and Stage 3 (Advanced Carbon Block) filter cartridges should be replaced every 6 months or up to 365 gallons. Stage 2 (SmartFlow™ Membrane) should be replaced every 12 months depending on usage and water quality. For homes with higher water usage and/or poorer water quality, you may need to replace your SmartFlow™ Membrane sooner than every 12 months. Stage 4 (Remineralizer) should be replaced every 6 months depending on usage and water quality.

To eliminate the hassle of knowing when to replace your filter, sign up for our Water for Life auto-ship program. Get free shipping, discounts on filter replacements, and an extended product warranty by joining Water for Life®.

Yes. The SmartFlow™ Reverse Osmosis is WQA tested and certified to reduce 90% of fluoride from your drinking water.
Yes. The Aquasana SmartFlow™ Reverse Osmosis system is WQA tested and certified to reduce 96% of pentavalent arsenic from your drinking water. It will not convert trivalent arsenic to pentavalent arsenic.
The total volume of the holding tank is 3.2 gallons. Volume is based on your inlet water pressure. So, the gallons in the tank can vary from 1.4-3.2 gallons at any given time.
The SmartFlow™ Reverse Osmosis Under Sink Water Filter flows at a rate of 0.8 gpm (gallons per minute).

Reverse osmosis is an incredibly effective method of filtering water, and it works by pushing water through a semi-permeable membrane (a porous block) at a high pressure to remove contaminants. As this pressurized water passes through the membrane, contaminants are left behind and only clean water passes through.

Our reverse osmosis system uses this process, in conjunction with a series of other filters, to increase effectiveness and retain healthy minerals that are often lost during the RO process. Water first passes through our Carbon Block to remove chlorine, taste and odor. Then, the system uses reverse osmosis filtration by pushing water through a semi-permeable SmartFlow™ membrane at a high pressure to remove dissolved solids smaller than 1 micron. Next, our Advanced Carbon Block filter uses ion exchange and sub-micron filtration to remove heavy metals, chemicals including herbicides and pesticides, and other contaminants. Finally, our RO system uses remineralization technology to restore healthy minerals like calcium while improving the pH balance and alkalinity of water for exceptional taste.

Yes. The Aquasana SmartFlow™ Reverse Osmosis water filter uses reverse osmosis to effectively purify your drinking water. In addition to reverse osmosis, the system also uses selective filtration to reduce 90 total contaminants, plus it includes a remineralizer designed to put back healthy minerals that are removed in the reverse osmosis process.

TDS, or Total Dissolved Solids, is the amount of dissolved minerals and metals present in water. TDS meters tell you the concentration of dissolved minerals and metals, but they are not an accurate measurement for contamination. Aquasana products reduce and remove harmful TDS like lead but selectively retain or replace healthy dissolved solids like calcium. Read more about TDS here.

The SmartFlow™ Reverse Osmosis comes standard with a 6-month Remineralizer designed to replace healthy minerals lost in the reverse osmosis process.

Using a reverse osmosis water filter is a great way to remove harmful contaminants like lead, mercury, asbestos, and other impurities that have a range of health concerns. However, it's important to note that the reverse osmosis process also tends to remove healthy minerals from your water as well, such as calcium. To ensure you get the maximum health benefits from your water, make sure to use a filter that has a remineralizer, which restores the healthy minerals lost during reverse osmosis.
When installing your new water filtration system, it's critical for the system to be able to drain wastewater effectively. Do not install the drain connector onto the same drainpipe as the garbage disposal as this can cause blockages to the drain line of the water filtration system and could lead to water coming out of the air gap (keyhole) of the faucet. If the drain line must be installed on the same line as the garbage disposal, do not use the drain connector included. Instead, a garbage disposal adaptor is recommended and can be purchased separately. There are many types of these adapters available. An example of this type of adapter can be found on Amazon by clicking here.