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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 1507.
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  • MSRP: 64.99

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

Questions? We can help

  • 866-662-6885
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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 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!

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 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

Date published: 2020-05-02
Rated 5 out of 5 by from Great tasting and very clear water You can definitely taste the difference when using these filters. I’ve been using this system since 2016 without any issues. Water is crystal clear and very tasty. Recommend it to anyone looking for a good reliable filter.
Date published: 2020-04-21
Rated 5 out of 5 by from Easy We have been using the Aquasana system and filters for about 2 years now and very pleased. Filters are easy to install and like that there's a low alarm to signal when it's time to replace with fresh filters.
Date published: 2020-03-27
Rated 5 out of 5 by from High quality household filter system. The filters are high quality and long lasting. Very easy to install and remove when replacement is necessary. My water is crystal clear and tastes great.
Date published: 2020-03-09
Rated 5 out of 5 by from Filters install easily in unit. The filters go in easily. Just remember to turn water feed off before installing your new filters. Tighten filters only hand tight and remembering put in new battery.
Date published: 2019-12-20
Rated 5 out of 5 by from Great filters. Drink water with confidence. Been replacing my filters for years. Every 6 months, no matter my usage. Always have great tasting water.
Date published: 2019-11-05
Rated 5 out of 5 by from Overall Experience of the Aquasana System The water filter system is under the sink; easy to replace; water tastes really good; replace it every 6 months or once the system warns you to replace it; we have had the system for over 3 years and we love it!
Date published: 2019-08-24
Rated 5 out of 5 by from Good clean water I've been using this system for a few years. Really like the tasty clean water
Date published: 2019-07-07
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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 (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.

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User Q & A

Is the red light on when the battery is in place so you know the system is working? It blinks when it needs changing? I see nothing currently..is that normal?

Asked by: charlie-m
Well, that's what mine does.
Answered by: Rich594
Date published: 2020-01-11

Is AQ-5300R the same as AQ5300

Asked by: Janis
Janis, The AQ-5300 is the actual 3-Stage Filtration System. The AQ-5300R are the replacement filters for the unit. If you have any other questions or concerns, our team member are available at 866-662-6885, Monday thru Friday from 8am-6pm CST, and weekends from 9am-5pm CST. -Aquasana Customer Support
Answered by: -ACS
Date published: 2019-06-14

Just replaced the filter. I heard the water sound in the filter when I turn on the water faucet. Is it normal? I never pay attention to it before. 

Asked by: SoSo
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 customer service department at 866-662-6885, to discuss a potential solution for your home. Thank you, Aquasana Support
Answered by: Aquasana S
Date published: 2020-04-03

Just replaced our filters and the water now taste bitter...it’s not bitter out of non-filtered faucets.

Asked by: Gary Bean
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 support department at 866-662-6885. Thank you, Aquasana Support
Answered by: Aquasana S
Date published: 2019-03-14

Where is the battery located? What kind of battery and should one ship with our replacement filters?

Asked by: Scrapper
The battery is located at the top of the system. Aquasana includes replacement batteries with every replacement filter order. Or you may purchase Lithium Cell CR 2450 3.5V battery.
Answered by: Aquasana Service Team
Date published: 2019-03-08

I have changed the filters and water doesn't run. I have checked all filters and water went through the first filter (black) only. The sumps are attached and locked in properly. What is wrong?

Asked by: Aquasana Problem
Hello, Thank you for your question. We would like this inquiry to be handled by a tech specialist. Please contact our team at 866.662.6885 or email support@aquasana.com for assistance. Thank you, Aquasana
Answered by: Aquasana Service Team
Date published: 2018-11-06

We have just replaced the filters and battery for the first time. The red light is staying on and the system is beeping. Does this mean the new battery is not good?

Asked by: Lynette
Lynette, Thank you for your question. Kindly keep in mind when the battery is inserted the system will blink (5) times and flash red. If the ticking does not stop, please contact our service team at 866.662.6885 for a replacement battery. Thank you, Aquasana
Answered by: Aquasana Service Team
Date published: 2019-05-16

How long after the beep starts do I have until I have to replace the filter?Ron

Asked by: Ron Ron
Once filters are at 95% capacity (about every 6 months), the battery alarm will sound and flash red when water is flowing and will continue for 15 seconds once water is turned off. Change the battery every time you replace your filters. The battery is included with the filter replacement cartridges.
Answered by: Aquasana Service Team
Date published: 2018-09-25

Is the free shipping and price apply to a Canadian customer?

Asked by: Mikeshaddow
This question would be better answered by the seller or distributor.
Answered by: Bowie
Date published: 2018-09-02

I can't get the water to run after replacing the filters, any suggestions?

Asked by: mthumor
I answered my own question! I noticed one of the labels was askew which meant it wasn't in correctly. Now works great!
Answered by: mthumor
Date published: 2018-06-23

Changed filters in my 5300R today and the flow rate has decreased significantly. When I first turn it on, the flow is normal, but after a second, the rate decreases to a little more than a trickle. It sputters like there might be be air in the lines

Asked by: Joan
Make sure the valve is all the way on...all the way. Run it for 10 minutes straight to make sure there is no trapped air bubbles. Make sure replacement orfices are clear and free of packing. Every orfice should be clear in every line. Kinked line somewhere?
Answered by: Carl...lifelong plumber.
Date published: 2018-06-19

I replaced the filters on my AQ-5300R 12/2017. Customer service rep said I should be good for 1 year, as it is only me. The beep started 6/11/18, no way I went thru 600 gals in 6 months! Rep I spoke to said take out battery, & replace 12/2018. Yes or no?

Asked by: JanetM
Sure. Think it’s programmed for 6 months. I thought the filters and battery are to be replaced every 6 months. That’s what’s recommended. But if it’s only you, you’re probably good for 1 year.
Answered by: Bluest
Date published: 2019-04-07

The light on top of my 3-stage filter is blinking red. It's a new battery. What should I do?

Asked by: Nonnie
Hello! If you received a defective battery, you can just give us a call at 866.662.6885 and we will get a new one shipped out for you. Thank you, Aquasana
Answered by: Aquasana Customer Support
Date published: 2018-06-15

Does the AQ-5200R block flouride ?

Asked by: fooldawg
Thank you for your interest in Aquasana. The AQ-5300 and AQ-5200 systems are not NSF certified to reduce or remove fluoride. For 95.7% fluoride reduction, check out our under counter Reverse Osmosis system- http://www.aquasana.com/drinking-water-filter-systems/reverse-osmosis-claryum. Thank you, Aquasana Customer Support
Answered by: Aquasana Customer Support
Date published: 2018-06-02

Where do I find the battery of the AQ 5300?

Asked by: Kitkat
Each set of filters will come with a new battery. If you are trying to find the battery compartment of the system, run your hand along the top of the manifold (the part that the filter canisters screw into), and you will feel a tab. That little tab pops out and you can insert the new battery in the white piece. Thank you, Aquasana Customer Support
Answered by: Aquasana Customer Support
Date published: 2018-09-02

Changed filters 12/12/2017. Today we found the cartridge sump for the sediment pre-filter had failed and flooded the under-sink cabinet. Bottom of the sump had bulged out and had a X-shaped crack. What might have caused this? Can the sump be replaced?

Asked by: Walter
I'm sorry to hear that your system has sprung a leak! This can occur when your filters become clogged and pressure builds up within the system. We can certainly replace the damaged part for you. Just give us a call at 866.662.6885 and a member of our service team can discuss your warranty options. Thank you, Aquasana Customer Support
Answered by: Aquasana Customer Support
Date published: 2018-04-06

What is the difference between the AQ-5300 and AQ-5300R water filters?

Asked by: Kazuo
Aquasana's AQ-5300 and the AQ-5300+ contain the same benefits. However, the AQ-5300+ is designed with a 44% faster water flow, and an additional 200 gallons with each set of filters. Thank you, Aquasana Customer Support
Answered by: Aquasana Customer Support
Date published: 2018-04-05

I received my new filters in the mail so I know it has been 6 months, but it hasn't started beeping like the first 6 months did. Should I change the filters because it has been 6 months or should I wait for the beep?

Asked by: Loraine35
No don't wait for the system to alert you. Keep on the 6 month schedule. Do yourself a favor and after you install the new filters, on the canister closest to you write the date on a piece of masking tape and stick it on the canister.
Answered by: Bowie
Date published: 2018-03-26

After installing the my latest set of replacement filters, the flow is slow & creates a high pitched whining noise when turned off. I've never had this happen before. Is it possible that one of the filters has a problem?

Asked by: Beast
I do not know, but wonder if the shut off valve in one of the filters may be partially closed or almost closed. The noise you hear might happen if filter is not clicked all the way on, therefore not opening the valve very much causing a vibration from water trying to get through the valve. This is only my logic and some guessing. good luck.
Answered by: Bobby3
Date published: 2018-03-21

I replaced my filters in June of 2017 and it hasn't beeped yet to let me know to replace them again. Do I wait for the beep? I thought it was every 6 months? I checked the battery and when I take it out and put it back it in beeps 5 times like it should.

Asked by: scpugh
The beeper is set to go off when the filters are full. Depending on how much water you put through your filter, and how clean the water going into the filter is, you may not need to change every 6 months. My filters lasted longer than six months until I started using filtered water for my coffee. The added throughput had the beeper going off right at six months. Im signed up for the water for life membership and my new filters came right after the filter started beeping.
Answered by: paddy1420
Date published: 2018-03-05

What is the height & width of the AQ-5300+ Aquasana unit?

Asked by: hobnob
with the filters put in height is 8 3/4 and width is 12 inches
Answered by: josh1211
Date published: 2018-02-25

My system has never beeped.  I have replaced them a few times.... Why hasn't the system beeped?  Is the incoming water good enough to not signal a replacement is needed?  I do not want to spend money to replace the filters if it is not needed. 

Asked by: Dubious
Has the battery been replaced? Do you replace it with each filter change? It could be a dead battery as the cause that your system has not beeped.
Answered by: Addicted to Golf
Date published: 2018-02-13

Are the filters for the Model Number AQ-5300; and Model Number AQ-5300+ interchangeable?

Asked by: RobN
No, the 5300 and the 5300+ have two different filter sizes. You will want to make sure you purchase replacements accordingly. Please let us know if you have any other questions!
Answered by: Aquasana Customer Support
Date published: 2018-06-09

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
I have used FedEx many times.  They are reliable and professional and fast. I wouldn’t hesitate to say choose them for your service.
Answered by: Fritz49
Date published: 2017-12-17

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: 2018-03-02

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: 2018-09-02

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

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
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