Filter Replacement
3-Stage Under Counter Water Filter

Replacement filters for the Aquasana 3-Stage Drinking Water System, Model Number AQ-5300.

5300 water filter

This filter set replaces the filters in the AQ-5300 3-Stage drinking water filtration system.

3-Stage Drinking Water Filter Replacement is rated 4.6 out of 5 by 1464.
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  • MSRP: 64.99

Save 15% + free shipping with Water for Life $55.24

Questions? We can help

  • 866-662-6885
  • MON–FRI: 8AM–6PM CST
  • SAT–SUN: 9AM–5PM CST

Pure Performance

Claryum® Technology

Activated Carbon Reduces organic chemicals like 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 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.

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!

How It Works

Superior Filtration

Selective Claryum® Filtration

Reduces 68 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 certified to NSF/ANSI Standards 42, 53 & 401.

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

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

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Read the Reviews

Rated 4 out of 5 by from Good filters but is too quiet. I have used aquasana 3 stage filers for about four years. They are easy to install and I am quite happy with their performance except for one thing: the battery never signals that new replacements have been installed or need to be replaced. In fact tit never buzzes or rings or makes any noise. I don't know whether that is good or bad.
Date published: 2017-12-13
Rated 5 out of 5 by from Easy replacement We decided it was time to replace the filters. Followed the directions and replacement went as planned. And No leaks!
Date published: 2017-11-26
Rated 1 out of 5 by from Leaking filters Frustrated. The night before Thanksgiving I changed the filters on my Aquasana 3-Stage filter and the blue filter is leaking profusely. Had to totally disconnect the filter so that I could use my sink.
Date published: 2017-11-26
Rated 5 out of 5 by from Easy installation The instructions to replace my old water filters with these new ones were easy to follow making the whole process easy and leak-free.
Date published: 2017-11-25
Rated 4 out of 5 by from Besides a few Glitches - Results are Very Good The water from this product has been very good. Installation was fairly easy. We have had a defective black filter a couple of times. Other then that this would be a 5 star rating.
Date published: 2017-11-18
Rated 1 out of 5 by from Good taste. Pathetic flow. Disappointing service. I bought it in January, by summer it already needed new cartridges. By then Aquasana had realized how terrible the flow rate was, and introduced a higher flow model to solve the problem, but wouldn't replace my nearly-new filter system to solve my problem.
Date published: 2017-11-11
Rated 5 out of 5 by from Does what is claims to do! I've used AQUASANA filters for my drinking water and also for my two showers for a number of years. Fairly priced and shipping was timely. I like these filters because they not only filter out the normal things, but also filters out fluoride Can't be beat for the price.
Date published: 2017-11-10
Rated 5 out of 5 by from Very Easy I was very glad at how easy it was to swap out the filters and the kit included a new button battery. Nice touch, thanks.
Date published: 2017-11-06
Rated 5 out of 5 by from Peace of mind! Knowing that our drinking water is safe and delicious is more than worth the price of the Aqua Sana water filtration system!
Date published: 2017-10-26
Rated 5 out of 5 by from The cleanest water in town! Our Aquasana system and filters have been a life saver. The filtered water tastes amazing and the services provided for refills are affordable and extremely efficient. Love this company! Thank you!
Date published: 2017-10-26
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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.

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User Q & A

Regarding the three stage filter.  Are you pricing each filter for fifty five dollars or is for a set of three filters?

Asked by: tgag
its for the set
Answered by: truby
Date published: 2017-12-07

I nned to buy replacement of my filter, but I don't know the model

Asked by: Guillermo Capriles
Hello, Please feel free to contact us directly at 866.662.6885 and a member of our service team will be happy to assist in identifying the system that you have installed. Thank you, Aquasana Customer Support
Answered by: Aquasana Customer Support
Date published: 2017-12-05

Where is the battery compartment on the AQ-5300?

Asked by: Bill55
Hello! Please see that attached image. The slot is in the top of the manifold, which is the big piece that the filters are inserted into. Thank you, Aquasana Customer Support
Answered by: Aquasana Customer Support
Date published: 2017-10-14

What does each individual filter do in the AQ-5300?

Asked by: It's Me
Great question! The black cartridge is a 20 micron pre-filter designed to catch rust, sediment, and silt. The red cartridge takes care of chlorine taste and odor, and the yellow filter reduces all other contaminates that are listed in the performance data sheet. - http://cdn.aquasana.com/assets/AQ-5300_Performance_Data.pdf Thank you, Aquasana Customer Support
Answered by: Aquasana Customer Support
Date published: 2017-10-11

I'm getting a blue light and a beeping noise...my filters are 6 months old. Am I getting the light and beep because my filters are dirty or am I getting the light and beep because of a timed response, ergo, 6 months?

Asked by: chris
Hi Chris, thank you for your question. These filters are NSF certified for 6 months or 600 gallons, whichever comes first. Your system is indicating that you have reached the 6 month lifespan of the filters. If you have any other questions or concerns, please let us know and we will be happy to assist! Thank you, Aquasana Customer Support
Answered by: Aquasana Customer Support
Date published: 2017-09-15

Previously you shipped via postal service...... Bahamas has a postal service difficulty.....do you ship courier ? FedEx or DHL express courier ?

Asked by: Island Boy

Hi my name is Pedro and i'm writing from Portugal. About two years ago i bought a Aquasana AQ-5300 and i'm very happy with it, but in recent days the faucet that came with system started to drip. Is there a way to repair it or do i have to buy a new one.t

Asked by: Pedro Batista

Where is the video for installing the 5300 filters

Asked by: Elizabeth Chang
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