Filter Replacement
2-Stage Under Counter Water Filter

Replacement filters for the Aquasana 2-Stage Drinking Water System, Model Number AQ-5200.

5200 water filter

This filter set replaces the filters in the AQ-5200 2-Stage drinking water filtration system.

2-Stage Drinking Water Filter Replacement is rated 4.7 out of 5 by 2197.
  • y_2020, m_11, d_30, h_16
  • bvseo_bulk, prod_bvrr, vn_bulk_3.0.12
  • cp_1, bvpage1
  • co_hasreviews, tv_197, tr_2000
  • loc_en_US, sid_50, prod, sort_[SortEntry(order=RATING, direction=DESCENDING), SortEntry(order=SUBMISSION_TIME, direction=DESCENDING)]
  • clientName_aquasanaserviceteam
  • bvseo_sdk, p_sdk, 3.2.0
  • CLOUD, getAggregateRating, 55.45ms
    • MSRP: 59.99

    Save 15% + free shipping with Water for Life $50.99

Questions? We can help

  • 866-662-6885
  • SAT: 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 12x the capacity of the leading gravity-based pitcher at only 10¢ per gallon with Water for Life.

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.

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

Learn More

Read the Reviews

Rated 5 out of 5 by from Process works! I haven't installed these filters to date. I now have them on hand when the time to use them is eminent The ordering and receipt of the product when as designed..
Date published: 2020-11-21
Rated 5 out of 5 by from Love my water filter I love this water filter. I've been using Aquasana for several years but they have made many improvements.The replacement filters are easy to install and I really like the feature that the filter beeps when it is time for me to replace the filters. Water is delicious.
Date published: 2020-11-18
Rated 5 out of 5 by from Very Good The two stage drinking water filter is very effective. I've been using this system for several years now, changing the filters at approximate six month intervals. As soon as I change the filters, I order a new set so I always have a new set on hand. Expensive but worth the money.
Date published: 2020-10-24
Rated 5 out of 5 by from Great having clean healthy water. The system is easy to install. The only issue I have is that the "beep" when it's time to change the filter is too low, luckily I'm on the automatic system that delivers my the replacement filters when I need them.
Date published: 2020-10-15
Rated 5 out of 5 by from Works great Easy to install and replacing the filters is a breeze I was surprised at how much gunk the first filter picks up. Glad it is not getting into my body
Date published: 2020-10-15
Rated 5 out of 5 by from Love this product! We’ve been using this filter for many many years. Installation is so easy even I can do it. Highly recommend this product and have as a matter of fact recommended it to many of my friends who are scientist. They are impressed when they read the report of how welll these filters improve water quality.
Date published: 2020-10-15
Rated 5 out of 5 by from Love it So glad we got this filter. Water tastes great and so we are drinking more. Signing up for auto mailing of replacement filters makes things a piece of cake. Filters are easy to replace.
Date published: 2020-10-15
Rated 5 out of 5 by from Works well Can’t tell the difference between AQUASAUNA filtered water & bottled water! New filter works very well, like my previous AQUASAUNA filter did.
Date published: 2020-10-14
  • y_2020, m_11, d_30, h_16
  • bvseo_bulk, prod_bvrr, vn_bulk_3.0.12
  • cp_1, bvpage1
  • co_hasreviews, tv_197, tr_2000
  • loc_en_US, sid_50, prod, sort_[SortEntry(order=RATING, direction=DESCENDING), SortEntry(order=SUBMISSION_TIME, direction=DESCENDING)]
  • clientName_aquasanaserviceteam
  • bvseo_sdk, p_sdk, 3.2.0
  • CLOUD, getReviews, 9.71ms

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

Is it true that the battery does not impact how the filter functions? Is the battery truly only for the alarm to alert a filter change? 

Asked by: Yoli
Yes, You can remove the battery and the filter will work fine. It just gives a quiet whine when you first turn the faucet on, lasts about a second. Starts at about 5 1/2 months from the time you insert the battery. It's just to remind you that you're getting close to 6 months and time to change the filter. Each replacement filter comes with a fresh battery.
Answered by: Bill2
Date published: 2020-08-22

I have trouble rotating the opener of my aquasana 4000 counter top to change the new filter. What shall i do to open it.

Asked by: Anonymous
purchase 2 small woodworking clamps, either spring loaded or screw type to attach to the tabs on opener. They may give you more leverage to turn the tops just enough to break the seal and then you may be able to turn by hand.
Answered by: jay-jay
Date published: 2020-08-21

Does it remove chlorine & heavy metals like lead, arsenic etc. Also how amoebas,giardia etc are killed. Does electricity& activated charcoal is used? What is taste of water after filtration?

Asked by: Ramesh garg
Not sure, however, if you are going to install undersink, be careful as it will eventually develop a leak and if you are on vacation, you can imagine the flooding it will cause. There is no other outcome of this filter installation. After 8 years of being waterforlife customer ad 2 flooding incidence & repairs, I have up on this filter when I heard there is a class action law suit is being filed. In the meantime, they never felt of compensating for my losses or even apologizing. I am no longer a customer of them.
Answered by: RM prev customer
Date published: 2020-07-14

So i have a 5200 2 filter system and i just setup but cannot get any water to come out. Does a dead battery cause this ? I am pretty certain everything is installed properly. I have watched the install video multiple times.

Asked by: Pickleballer
The battery is only for the alarm that alerts you to change the filter. Check your water supply line to make sure you opened it. If that’s done and there’s still no water perhaps you have a kink in one of your lines. 
Answered by: Mama BC
Date published: 2020-05-23

Hello,I purchased reverse osmosis filter on November.The water flow totally stoped by march 23.I opened the filters and the red one was black,so I replaced it.i check the yellow but it is not a bad yet.should I change them the same time?

Asked by: Emanuel
Emanuel, 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 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

am replacing my filters.  I can't get the IN (red) filter cylinder to lock into place

Asked by: joannejoanne
It needs to be properly aligned and then firmly turned. I've had this unit for years and occasionally run into the same issue.
Answered by: Asgar
Date published: 2020-03-24

My filter started beeping this morning (3/10). My delivery was scheduled for 3/13. I called to have it moved up to today and they did. But is my water safe to drink between now and when the filter arrives? Should I buy bottled water while I wait?

Asked by: Kbmama
I called for an answer and they said that when the filter starts beeping it means it has 20% of life left.  I pointed out to the supervisor I spoke with that this information is not available anywhere on this website and it is information that customers should have access to.  I asked the question here to see if anyone from Aquasana would respond so an answer would be available to others. It seems they don’t monitor or respond to questions on here. 
Answered by: Kbmama
Date published: 2020-03-16

I have replaced the filters on my AQ-5200. One cartridge has a very minute drip where the cartridge inserts into main unit. I have taken the leaking cartridge off and reinstalled several times but it has not fixed the problem.

Asked by: MJR007
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 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: 2020-03-12
  • y_2020, m_12, d_1, h_16CST
  • bvseo_bulk, prod_bvqa, vn_bulk_3.0.12
  • cp_1, bvpage1
  • co_hasquestionsanswers, tq_30
  • loc_en_US, sid_50, prod, sort_[SortEntry(order=LAST_APPROVED_ANSWER_SUBMISSION_TIME, direction=DESCENDING)]
  • clientName_aquasanaserviceteam
  • bvseo_sdk, p_sdk, 3.2.0
  • CLOUD, getContent, 37.58ms

To give you the best possible experience, our website uses cookies. You can review our privacy policy to find out more about the cookies we use and how to adjust your browser settings to block cookies. If you close this box or continue browsing our website, you accept our use of cookies.