Drinking Water Filter
3-stage Under Counter

The best performing water filter plus an increased capacity pre-filter.

5300 Plus under counter faucet

Get 44% faster water flow plus 200 more gallon capacity
& Bluetooth filter tracking! Shop Now

Select a faucet finish: Brushed Nickel
  • all-metal brushed nickel faucet
  • all-metal chrome faucet
  • oil rubbed bronze faucet
3-Stage Under Counter Water Filter - Brushed Nickel is rated 4.6 out of 5 by 1565.
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  • MSRP: 285.70
  • Sale: 142.85

Save 50% + free shipping with Water for Life $142.85

Questions? We can help

  • 866-662-6885

Whole Health

Ultimate Purity*

Instantly transform ordinary tap water into clean, extraordinary water.

NSF Certified Claryum® filtration technology independently tested and proven to remove over 97% of chlorine and chloramines. Also reduces:

  • Heavy metals like lead and mercury
  • Chlorine resistant cysts like giardia and cryptosporidium
  • Organic chemicals like herbicides, pesticides and VOCs
  • Pharmaceuticals like estrone and ibuprofen

For a complete list of contaminants reduced please see our Performance Data Sheet.

Aquasana filters 10 times more contaminants

Whole Health

Ultra Delicious

Claryum®'s selective filtration technology retains naturally occurring beneficial minerals in your water like Calcium, Potassium and Magnesium for healthier, more delicious water!

Whole Health

Eco Friendly

Designed with the environment in mind! Intelligent system design reduces plastic waste by minimizing disposable plastic parts.

Pure Performance

Claryum® Technology

Activated Carbon Reduces pharmaceuticals, herbicides, pesticides, VOCs and MTBE.

Catalytic Carbon Targets chlorine and chloramines.

Ion-Exchange Filters heavy metals like lead and mercury.

Absolute Sub-Micron Mechanical Filtration Captures asbestos and chlorine resistant cysts like cryptosporidium and giardia.

The result: 10x more contaminants reduced than the leading pitcher plus healthy minerals retained for purely delicious filtered water.

Pure Performance

Easiest filter Replacement

Replacements engineered for ease. No need to disconnect hoses or water lines. Eco-friendly filter housing easily twists off so replacing your filters is a snap!

Pure Performance

Convenience & Value

Fewer filter replacements. More clean, great-tasting water.

One Aquasana Claryum® filter gives you 15x the capacity of the leading gravity-based pitcher at only 9¢ per gallon with Water for Life.

Pure Performance

Increase Performance

Extend the life of your system. Improve effectiveness.

Three Stage System features a 20 micron pre-filter to capture rust, sediment and silt that can clog your system. Extends filter life capacity to 600 gallons!

Pure Performance

A Smarter System

The Aquasana AQ-5300 alerts you when it's time to change your filters. No more guessing if and when you need to replace your old filters.

Pure Performance

Designer Faucet

Match your kitchen d├ęcor with a designer faucet featuring all metal construction.

How It Works

Superior Filtration

Selective Claryum® Filtration

Reduces 77 contaminants while retaining beneficial minerals for optimal hydration.

Easy to install, replace & maintain

Filter lasts up to 6 months and features easy twist-off design.

certified by NSF

NSF Certified

Full system tested and certified to NSF/ANSI Standards 42, 53, 401 + P473 for the claims specified on the Performance Data Sheet.

  • 600 gallons
  • 6 month filter life
  • 1 year warranty
  • 90 day guarantee

Help & Support

Video Help

  • How to install the Claryum 3-stage water filter
  • How to replace the AQ-5300-R under counter filters

Installing the 3-stage under counter system

Replacing the 3 filters in the AQ-5300

Learn More

Read the Reviews

Rated 5 out of 5 by from Aquasana Installed at our overseas apartment (Jordan ) to stop buying bottled water. Installation was very easy and water quality was excellent. Everyone liked the taste and it was as good as the bottled water. Used it for one month.
Date published: 2018-06-03
Rated 5 out of 5 by from Owner/Individual Absolutely enjoy our new Aquasana filtration system. Water tastes very good so we have the confidence that water is free of most contaminates. Was easy to install (did not install brushed nickel tap). Staff at Aquasana very friendly and caring. Even called and offered a free gift !! Would recommend anyone to try Aquasana for clean refreshing water.
Date published: 2018-05-14
Rated 5 out of 5 by from great product Really like my new filter, water taste great and is very clear
Date published: 2018-05-09
Rated 5 out of 5 by from Impression of aquasana water filter We're definitely enjoying the quality of the water we're getting from our filter system, and it was a breeze to install. I'm a little disappointed with the dispenser, it leaks (bought 2 units and both have a drip) an upgrade would be nice. Overall very pleased with the taste and quality of the water.
Date published: 2018-05-09
Rated 5 out of 5 by from Clean, Clear, great tasting water! Love the peace of mind that comes with contaminant-free water
Date published: 2018-04-25
Rated 5 out of 5 by from Tickled Pink with my filters After my filters were installed by my handyman I could not wait to taste it, and it tastes just totally delicious. Phoenix water is very hard and does not taste good, plus I do not know what is all in it, sometimes you can smell the chlorine, YIKES! So yes, I am so happy I am now drinking real water without any misery in it, straight from the little tap in my kitchen and one in my bathroom. It is a sure delight to have these filters, that have a great flow, and make no noise.
Date published: 2018-04-25
Rated 5 out of 5 by from Best tasting water, ever Love this new system. I have such hard water here and it's undrinkable. Now it is the best tasting water ever! Love it.
Date published: 2018-04-22
Rated 5 out of 5 by from Great tasting water. I just had this filter installed. I love it! Good quality, and the water tastes great!
Date published: 2018-04-22
Rated 5 out of 5 by from THRILLED! Couldn't be happier with our new Aquasana water filter. Tastes amazing and so pleased with the knowledge that their product works so well.
Date published: 2018-04-19
Date published: 2018-04-16
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Aquasana FAQs

  1. Do I have to pay for a plumber to install the system?

    Our under counter drinking water filter systems are very easy to install, and it only takes a few minutes to do; no plumber is necessary. If you have any questions or need assistance, our technical support representatives at 866-662-6885 can walk you through the installation process.

  2. How often do I have to replace the cartridges and how much do they cost?

    We recommend replacing the cartridges after six months or the specified gallon capacity to prevent the growth of bacteria in the system. The AQ-5100 Single Stage has a capacity of 200 gallons, the AQ-5200 Two-Stage has a capacity of 500 gallons, the AQ-5300 Three-Stage has a capacity of 600 gallons and the AQ-5300+ Three-Stage has a capacity of 800 gallons. Replacement filters cost $29.99 for the AQ-5100, $59.99 for the AQ-5200, $64.99 for the AQ-5300 or $79.99 for the AQ-5300+, but you can save 15%, get free shipping, and extend your product warranty by signing up for our no-contract auto-ship filter replacement program, Water for Life. The performance indicating device on the AQ-5200, AQ-5300 and AQ-5300+ systems will sound a beeping alarm and flash red when it is time to change your cartridges. The AQ-5300+ also contains Bluetooth connectivity so you can download our iPhone App and get alerts for when it is time to change your cartridges and even order new replacements straight from the App!

  3. Is this purified water?

    No, and actually, purified water is not as healthy as filtered water. Purified water undergoes reverse osmosis or distillation, which strip everything out of your water - not only the contaminants, but also the healthy, natural minerals. Our system uses selective filtration designed to reduce contaminants from the water and leave in the natural healthy minerals like calcium, potassium, and magnesium.

  4. How do I recycle the replacement filters?

    We have designed this system to minimize the environmental impact of our replacement elements, which are over 95% biodegradable carbon. Our company will recycle the filters for you, but we do not cover the shipping cost to return the filters back to us. In reality, the environmental impact of shipping the filters back to us outweighs the good of recycling. To recycle the drinking filters yourself, remove the ends of the filters, recycle the plastic parts (which are appropriately numbered) and put the carbon either in your compost pile or garden (carbon is good for plant life), or just throw it out (since the carbon degrades quickly, and is a positive component in a landfill).

  5. I'm a renter, so I can't drill or modify the plumbing. What should I do?

    To install an under counter system, you can remove the existing sprayer or soap dispenser on your sink and install our faucet in its place. This option will not damage or permanently modify your plumbing. When you move out, you can easily remove the system and reconnect your plumbing back to normal. If you do not have an existing hole in your sink from a sprayer or soap dispenser, we also have a countertop drinking water filter that conveniently screws on to most kitchen faucets.

  6. What is the size of the brass T-fitting for under counter and premium under counter unit?

    The most common size is 3/8" which originally comes with the system purchase. In rare cases some customers may need a 1/2" T-fitting which is sold separately and is available for purchase through technical support.

  7. What size hole do I need in my sink for the under counter and premium under counter systems?

    The faucet that is included with our systems requires a 1/2" hole.

  8. What does TDS mean?

    TDS is the acronym for Total Dissolved Solids, the amount of dissolved minerals and metals present in water. TDS meters tell you the concentration of dissolved minerals and metals, but 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, magnesium, and potassium.

  9. What is BPA? And why are people concerned about it?

    BPA stands for Bisphenol-A, a contaminant found in most plastics. BPA can adversely affect your health if consumed at high levels. Aquasana drinking systems do not contain BPA, and our filtration process reduces existing BPA.

  10. Does having hard water mean it is contaminated?

    Hard water is more of a nuisance than a health risk, and is not necessarily contaminated. Most water sources in the USA are considered hard. Hard water is generally safe to drink, after it has been properly treated.

  11. What is soft water, and is it safe to drink?

    Having soft water just means you have a lower concentration of dissolved minerals in the water (primarily calcium and magnesium). Soft water does not mean clean water. Your water can be soft and still contain contaminants.

  12. What is selective filtration, and how do Aquasana systems filter drinking water?

    Selective filtration is the process of sub-micron filtration, micron filtration, adsorption and ion exchange, all of which selectively reduces chemicals, heavy particulates and most dangerous heavy metals from the water while maintaining healthy minerals like calcium, magnesium and potassium.

  13. What is the difference between the single-stage, 2-stage and 3-stage under counter systems?

    All of our drinking water systems use the same Aquasana Claryum® filtration technology. The single-stage system lasts 6 months or 200 gallons before the cartridges need to be replaced. Our 2- Stage system has a higher capacity than the single-stage, giving you 6 months or 500 gallons of clean, filtered water. The 3-Stage system includes a 20 micron pre-filter before the two Aquasana Claryum® filters. This pre-filter increases the capacity of the system from 500 gallons to 600 gallons. In addition, it improves flow rate in high sediment areas. The 3-Stage Max Flow system adds even more capacity to 800 gallons, a 44% increase in flow rate at .72 gallons per minute and Bluetooth connectivity for filter tracking.

  14. I have an existing side faucet from a previous system. Can I use that with my new Aquasana water filter?

    We recommend that you use the faucet provided. We have extensively tested the system with the faucets included. The faucets are NSF Certified to have no lead content. In addition, they will not impart any unwanted chemicals into your water. If you choose to use another faucet, we recommend that you have a plumber install the system to ensure no leakage occurs. We also recommend that you install an NSF Certified faucet to ensure the health benefits of your new Aquasana water filter.

Learn More

User Q & A

Is there a way to test the alarm?  I don't think mine is working.  When I install the battery I don't hear the five beeps that should be expected.  I checked the voltage of the battery and it is reading 3.4 volts, so the battery isn't dead. 

Asked by: Lou D.
Thank you for your inquiry. The battery is a standard Lithium CR2450 3V battery available at your local store. You may also want to ensure the battery is inserted correctly. Try flipping it over. The writing on the battery should be facing the wall. Refer to the photo below. If you need further assistance, please call 866.662.6885 or e-mail support@aquasana.com
Answered by: Aquasana Service Team
Date published: 2018-09-21

I have a granite countertop without an extra hole. Is there any way to attach this to an existing faucet? Or, do you you have another suggestion? Does this filter out fluoride?

Asked by: Mezzo
Thank you for your inquory. The system coes with a small cold water faucet to be installed with the syste. You may use the existing extra hole you have. It is not deisgned to be used with the main faucet, as hot water should not be filtered through the system. It degrades the carbon at an accelerated rate. Tihe 3-stage system does not remove fluoride. However our Reverse Osmosis system does, and has a similar setup. You can review the RO system at: https://www.aquasana.com/drinking-water-filter-systems/reverse-osmosis-claryum I have also attached a photo of the setup so you can get an idea, just click on the photo below. If you have any questions, please e-mail sales@aquasana.com
Answered by: Aquasana Service Team
Date published: 2018-09-21

Hello, Is it safe for the water line to run behind the range so it can reach the ice maker within the refrigerator?

Asked by: mlouie
Thank you for your inquiry. While we believe it should be okay, We highly recommend you inquire with a licensed plumber. Let us know if you have any questions!
Answered by: Aquasana Service Team
Date published: 2018-09-18

How much of chlorine and fluorine does this remove?

Asked by: RJ....
Thank you for your interest in Aquasana. The 3-stage system is certified to remove more than 97% of chlorine in your drinking water. Flourine salt, or flouride, is only removed through our Reverse Osmosis system at: https://www.aquasana.com/drinking-water-filter-systems/reverse-osmosis-claryum
Answered by: Aquasana Service Team
Date published: 2018-09-18

Is this water Ionized as well??

Asked by: Zelly
Thank you for your interest in Aquasana. Our products do not ionize the water.
Answered by: Aquasana Service Team
Date published: 2018-09-18

When it starts beeping, what does this mean?

Asked by: Chad1971
Filters need to be changed, the battery as well. Hope this helps.
Answered by: Old pipefitter.
Date published: 2018-09-12

We have one of the three-stage filters units. The gooseneck faucet is very thin and sometimes I've seen sludge in there. Do you have a way to clean those? Is there an optional faucet?

Asked by: MikeyD
The buildup coming out of the faucet is airborne bacteria that is making its way into the faucet from the spout. What you can do is pull from the neck of the faucet up (it will slide out of the base), fill a baking sheet with half water and half vinegar and soak the faucet overnight. Flush thoroughly afterward and this will clean any bacteria inside the faucet. The faucet will slide back in and lock into the base. If you prefer to replace your faucet, please give us a call at 866.662.6885. 
Answered by: Aquasana Service Team
Date published: 2018-09-07

Does this faucet allow for hot and cold water? Also, can I replace existing kitchen faucet?

Asked by: apand3
The faucet is designed for cold water only and hot water can degrade the carbon. Our faucets are specifically tested and approved by the NSF for use with our filtration systems. Because your faucet has not been tested and certified with our system, we cannot recommend it, nor can we assist in the installation. You may find the installation manual at http://cdn.aquasana.com/assets/AQ-5100-5200-5300_Install.pdf
Answered by: Aquasana Service Team
Date published: 2018-08-29
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