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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 gallons of filter life capacity! Shop Now

Select a faucet finish: Chrome
  • all-metal brushed nickel faucet
  • all-metal chrome faucet
  • oil rubbed bronze faucet
3-Stage Under Counter Water Filter - Chrome is rated 4.5 out of 5 by 1634.
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  • MSRP: 285.70

Save 20% + free shipping with Water for Life $228.56

Questions? We can help

  • 866-662-6885
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  • SAT: 9AM–5PM CDT

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

Stylish
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 Clear and tasty water! I had my super install and he said that it was easy work. He liked it so much that he is planning to purchase one! I think NYC water is fantastic but this filter adds an extra boost of clean. I love it!
Date published: 2020-06-08
Rated 5 out of 5 by from Our first water filter system My husband was able to install it on a weekend afternoon. It definitely does a good job. We have a water distiller so we put filtered water versus non filtered water in it and there was a big difference. The Aquasana filtered water left no residue in the distiller.
Date published: 2020-05-26
Rated 5 out of 5 by from Aquasana 3 stage undercounter filter We love the filteration system. Was easy and quick to install. The water quality is fantastic. We love the peace of mind of having this system in place to ensure safe and delicious water to drink with and cook with
Date published: 2020-05-05
Rated 5 out of 5 by from Love it! The install instructions were very detailed and I was able to do it all myself.
Date published: 2020-05-05
Rated 5 out of 5 by from Great tasting water Not as easy to install as your video, because there are plumbing pipes in the way, garbage disposer, sink, etc. However, the parts went together fairly well. One of the filter modules leaked at first and I had to call customer service to resolve the leak, but works fine now. I do wish the on/off handle on your faucet was a bit higher up though. All things considered I'm glad to have bought it.
Date published: 2020-04-22
Rated 5 out of 5 by from excellent product The product was easy to install and the brushed nickel faucet looks elegant. I'm glad for the peace of mind knowing my water for drinking and cooking is being filtered. It was an added bonus for me that the shape of the faucet makes it easy to fill a pot.
Date published: 2020-04-09
Rated 5 out of 5 by from It is verything it is advertised to be! I have had nothing but great experience with your company!
Date published: 2020-04-04
Rated 5 out of 5 by from very satisfied the product & service. Happy with product, free from contaminants, easy to install, economical and good customer service.
Date published: 2020-03-23
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Learn More

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 (three months for the single-stage system) 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.

  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 for 800 gallons of filter life and a 44% increase in flow rate at .72 gallons per minute.

  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

This might sound funny but is this considered a reverse osmosis system and if so aren't reverse osmosis filters very inefficient?

Asked by: James the water guy
Hello James, Thank you for reaching out to us. The is not considered a reverse osmosis system. You may read more about our Reverse Osmosis system at: https://www.aquasana.com/drinking-water-filter-systems/reverse-osmosis-claryum If you are interested in a system, please call 866.662.6885 or e-mail sales@aquasana.com and a representative will be happy to discuss your needs and options.   Thank you,   Aquasana Support  
Answered by: Aquasana S
Date published: 2020-05-06

house has conditioned water (water softener). would that affect the function of the AQ 5300 system or the taste of the water.

Asked by: ReneV
ReneV, We would love to transfer this to a team specialist who is best-suited to answer any questions or concerns you may have. Kindly email us directly at support@aquasana.com or contact us directly at 866-662-6885, Monday thru Friday from 8am-6pm CST, and weekends from 9am-5pm CST. Thank you, Aquasana Support
Answered by: Aquasana S
Date published: 2020-04-22

How much does it cost to replace the three filters?

Asked by: Anonymous
Hello, Thank you for reaching out to us! I have provided a link down below for our replacement filters including the pricing. https://www.aquasana.com/replacement-drinking-water-filters/under-counter-3-stage-filters Please contact us at 866-662-6885 to help further assist. Thank you, Aquasana Support
Answered by: Aquasana S
Date published: 2020-04-22

Our Faucet just broke. How do we get a new one?

Asked by: jdbabe06
Hello, Thank you for reaching out to us! Please contact us at 866-662-6885 to discuss warranty and we will be happy to provide you with replacement faucet. Thank you, Aquasana Support
Answered by: Aquasana S
Date published: 2020-04-22

Hi. I cannot find the indicator light on my installed aquasana AQ 5300. Should it normally be blue until it turns red when filter needs changing?

Asked by: Anonymous
Me too. But you can hear the signal when you have to replace the filters...
Answered by: Billybo
Date published: 2020-04-29

Will it filter out chloroform?

Asked by: stihl
Hello, We would love to transfer this to a team specialist who is best-suited to answer any questions or concerns you may have. Kindly email us directly at support@aquasana.com or contact us directly at 866-662-6885, Monday thru Friday from 8am-6pm CST, and weekends from 9am-5pm CST. Thank you, Aquasana Support
Answered by: Aquasana S
Date published: 2020-04-09

Can I use a different faucet with this unit? If so, are there any flow rate and sizing specifications for 3rd party faucets?

Asked by: Filter Fan
Hello, 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. If you have further questions contact us at 866-662-6885. Thank you, E-Media Team
Answered by: Aquasana S
Date published: 2020-04-09

Hi Folks. Hope you're all healthy and well.   Quick question:  Will your 3 stage under counter filter take out salt from a water softener?   We have your filter and love it but now need soft water.  Thanks in advance for your response!  ;-) 

Asked by: Uncle Tony
Hello, We would love to transfer this to a team specialist who is best-suited to answer any questions or concerns you may have. Kindly email us directly at support@aquasana.com or contact us directly at 866-662-6885, Monday thru Friday from 8am-6pm CST, and weekends from 9am-5pm CST. Thank you, Aquasana Support
Answered by: Aquasana S
Date published: 2020-04-09

Does it work fine with well water?

Asked by: Adil Aleem
It doesn’t work well with any water. We went to a home show recently and a rep from a water softener cane out and tested the water from our tap and the water from our aqua sans triple under sink filter. The results were identical. Unless he was pulling some sort of a trick it sowed that’s I have been drinking unfiltered tap water that’s been run through this so called triple filter and nothing has changed. I am very disappointed in the results.
Answered by: Rovo130
Date published: 2020-06-25

Is there a built-in alarm/buzzer that will let you know when it’s time to replace the filters?

Asked by: gummbo
Yes, the battery will start to beep intermittently getting close to ~6 months.
Answered by: Willy
Date published: 2020-03-16

Does this have a switch to only filter cold water for drinking vs filtering hot water for washing dishes?

Asked by: MayQueen
Hello, Thank you for contacting us. The 3 stage under counter is not designed filter through the hot water line only the cold water line. If you have further questions please contact us at 866-662-6885. Thank you, Aquasana Support
Answered by: Aquasana S
Date published: 2020-03-05

Does the Claryum 3 stage under counter system remove fluoride?

Asked by: Kathy B
Hello Kathy, Reverse osmosis is the only way to remove fluoride from your water. Our OptimH20 Reverse Osmosis system removes over 95% of fluoride from your water. Take a look, let us know if you have any questions. https://www.aquasana.com/drinking-water-filter-systems/reverse-osmosis-claryum   Thank you, Aquasana Support
Answered by: Aquasana S
Date published: 2020-03-07

How does the alarm work? Is it merely a 6 month timer or does it actually measure water throughput and alerts when 600 gallons of water have passed through filters?

Asked by: Randy1961
Hello, Thank you for your question. Your system includes an alarm that will beep when it is time to change your filters. We also include a new alarm battery with every replacement filter shipment. If you have any further questions please contact us at 866-662-6885. Thank you, Aquasana Support
Answered by: Aquasana S
Date published: 2020-04-21

We have a granite countertop. What’s the best way I can install the faucet for the filter on it ? 

Asked by: Shubha
  Hello,   It appears you have several questions that would best be answered by a consultation with one of our experts over the phone.  Please call our sales department at 866-662-6885, options 1 and 1 to discuss a potential solution for your home.    Thank you,   Aquasana Support   
Answered by: Aquasana S
Date published: 2020-01-06

Does it remove nitrites ? And what about fluoride ?

Asked by: Roeyoga
Hello, Thank you for your question. Reverse osmosis is the only way to remove fluoride from your water. Our OptimH20 Reverse Osmosis system removes over 95% of fluoride from your water. Take a look, let us know if you have any questions. https://www.aquasana.com/drinking-water-filter-systems/reverse-osmosis-claryum   If you need further assistance contact us at 866-662-6885. Thank you, Aquasana Support
Answered by: Aquasana S
Date published: 2019-12-16

What other plumbing parts may be needed to install the under the counter filter system? And, do I hook it to the cold or hot water side?

Asked by: Doug4628
All parts needed were in the kit. Always use the cold water connection, never hot.
Answered by: Waterholic
Date published: 2020-01-18

does this come with the filters ? thanks

Asked by: cidny
Hello Cidny, Yes the system comes with a set of filters. If you need further assistance contact us at 866-662-6885. Thank you, Aquasana Support
Answered by: Aquasana S
Date published: 2020-01-05

Does the unit come with one set of filters?

Asked by: Dn water
Hello, Thank you for your question. Yes the system comes with a set of filters. If you have any further questions please contact us at 866-662-6885. Thank you, Aquasana Support
Answered by: Aquasana S
Date published: 2019-12-04

I would like to know the amount of under-counter space that is needed to install. We have a waste disposal that takes up some space there. So we want to see if it would fit.

Asked by: Marcia
Hello Marcia, Thank you for contacting us. I have provided the dimensions down below. Aq-5300 Specs: height 9" width 12" depth 4-1/4" If you need further assistance please contact us at 866-662-6885. Thank you, Aquasana Support
Answered by: Aquasana S
Date published: 2020-03-22

I find it curious that they don't disclose the micron size for each filter: the pre-filter (black), and the other two stages (yellow and red.) Can Aquapure chime in here with this data please?

Asked by: pkinpc
Have you read the performance data of the filters? I don't know why anyone would care about the micron size, as long as the filters are proven to reduce contaminates. The performance data sheets shows what it is removing and to what levels.
Answered by: Sphere360
Date published: 2020-03-11

My refrigerator is not near my sink and my house is on a slab. Can I use the filter for the refrigerator only? What would I have to change in order to accomplish this. It seems like I would not need the T but would need some type of reducer?

Asked by: dcharna
Hello, However, you can tee off the refrigerator if needed. We recommend to install a t-fitting. We have heard of customers doing this in the past with our under counter units and it working for them. However, because the system has not been tested and certified for this type of installation, Aquasana cannot recommend it, nor can we assist in the installation,. Please note- this change must handle .5 gpm flow rate. (Aquasana does not supply t-fittings). If further guidance is needed, you may also contact us directly at 866-662-6885, Monday thru Friday from 8am-6pm CST, and weekends from 9am-5pm CST. Thank you, -Aquasana
Answered by: Aquasana S
Date published: 2019-10-22

what is the flow rate

Asked by: Yero
Hello Yero, Thank you for your question the 3-Stage under counters is 5GPM. If you have any further questions please contact us at 866-662-6885. Thank you, -Aquasana Support
Answered by: Aquasana S
Date published: 2019-10-21

I moved into a home with this filtration system about a year ago. How do I know when I need new filters.

Asked by: filter replacement
Every 6 months I believe. Or when it starts beeping at you every time you go to run the water. 
Answered by: joshdchap
Date published: 2019-10-19

Finished the installation. No water comes out of the faucet

Asked by: Bubbasgirl
Hello, It appears you have several questions that would best be answered by a consultation with one of our experts over the phone. Please call our technical support department at 866-662-6885, to discuss a potential solution for your home. Thank you, Aquasana Support
Answered by: Aquasana S
Date published: 2019-10-17

On the AQ-5300 when the alarm goes off to change filters, am I getting drinkable filtered water for a short time? I'm waiting for my filters to be delivered. I signed up for auto delivery when I ordered these filters, so not a concern after today.

Asked by: Larry50001
I would suspect so. The last time I changed mine, I didn't even wait for the alarm, I knew it was 6 months. Maybe I should have waited? I have mine split to my ice maker, I drink filtered water all day and my dogs get filtered water. Good luck!
Answered by: Sphere360
Date published: 2019-10-08

Does the Claryum 3-stage undercounter filter system remove flouride?

Asked by: Looking for better water
Hello, Reverse osmosis is the only way to remove fluoride from your water. Our OptimH20 Reverse Osmosis system removes over 95% of fluoride from your water. Take a look, let us know if you have any questions. https://www.aquasana.com/drinking-water-filter-systems/reverse-osmosis-claryum Thank you! Aquasana Support
Answered by: Aquasana S
Date published: 2019-09-21

How the tank filled?

Asked by: Lin Chai
Hi, there is no tank to fill. It is constant flow on demand, like faucet.
Answered by: Rose444
Date published: 2019-09-08

I've installed the system and when I turn the water on, water gushes out from the filters. I've tighten them and every connection but water still gushes. What could be the issue?

Asked by: KennyS
Hello Kenny, Please contact us at 866-662-6885 to help provide the solution for your system. Thank you, -Aquasana Support
Answered by: Aquasana S
Date published: 2019-09-03

does it give signal ,it is time to change the filter?

Asked by: FARRA
Hello Farra, Thank you for your question. 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. If you need further assistance contact us at Support@aquasana.com Thank you, -Aquasana Support
Answered by: Aquasana S
Date published: 2019-09-03

What is the dimensions of the filter unit? Considering installation in my motor home.

Asked by: John RV
Hello John, The 3-stage Under Counter system measurements are as follows: Height: 9" Width: 12" Depth: 4.25" If you have any further questions please contact us at 866-662-6885. Thank you, -Aquasana Support
Answered by: Aquasana S
Date published: 2019-10-15
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