Premium
Shower Filter

The essential health and beauty product.

AQ-4125 shower water filter replacement

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  • Shower filter with head
  • Shower filter without head
  • Shower filter with white wand
  • Shower filter with chrome wand
Shower Filter is rated 4.6 out of 5 by 1229.
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  • MSRP: 84.99

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Whole Health

Feel the Difference

Reduce your skin's exposure to harsh chlorine and synthetic chemicals that can cause skin damage and excessive drying.

Shower in Aquasana filtered water for noticeably softer, more moisturized skin.

Whole Health

Stronger, Healthier Hair

One of the most important things you can do for hair is to wash it with filtered, chlorine-free water. Your hair will be noticeably softer and shinier, your scalp will be healthier and your color will stay true and last longer.

— River Lloyd, celebrity stylist of the
John Frieda Salon in New York

Whole Health

Ultimate Versatility

Choose from our premium massaging shower head or premium massaging handheld wand for multiple massage settings to customize your shower experience.

The Aquasana Shower Filter also works with most 2.5 GPM shower heads so you can keep your own shower head.

Pure Performance

Patented copper/zinc media and coconut shell carbon

Natural coconut shell carbon filters out chlorine and other harsh chemicals, while copper/zinc media further reduces chlorine and enhances water pH balance.

The Aquasana shower filter improves air quality, enhances water pH and removes over 90% of chlorine for the healthiest shower experience.

Please see our Performance Data Sheet for complete test results.

Pure Performance

Easy Installation

Attaches easily to shower pipe.

Long lasting filters only need to be replaced twice a year.

Pure Performance

Superior Design

Aquasana's unique upflow design prevents media channeling and clogging, retains shower head height and water pressure, and increases water contact time with media for superior filtration and unmatched results.

Pure Performance

Product
Enhancing

Naturally enhance your bath products and hair treatments. Use less shampoo, conditioner, soap and body lotions.

How It Works

Premium
Shower Filter

Removes over 90% of chlorine in shower water

  • 10,000 gallons
  • 6 month filter life
  • 1 year warranty
  • 90 day guarantee
See How It Works
certified by NSF

NSF Certified Media

Certified to Standards 42
and 61

AquaSorb™ HX coconut shell carbon reduces chlorine and synthetic chemicals

KDF 55 PROCESS MEDIA copper/zinc blend further reduces chlorine and enhances pH

Easy to install, replace and maintain

Help & Support

Video Help

  • How to install the shower water filter
  • How to replace the AQ-4105 shower filters

Installing the shower water filter

Replacing the filter in the AQ-4100

Learn More

Read the Reviews

Rated 5 out of 5 by from Thank you for giving me my hair back! I was renting a room from some friends who had well water, which they "softened", and there was WAY too much salt in the water. As a result, my hair was dry, frizzy and felt like straw. In my new apartment I easily installed my filter, by myself (and I'm only 5'4" tall), and allowed it to run clean as the instructions say. Within 3-4 days, the change in my hair was really noticeable. It is softer, more manageable and so much less frizzy. I can't wait to see how things are in a month or two!
Date published: 2019-06-27
Rated 5 out of 5 by from Love it! Looking to purchase more products! We live in a city with municipal water, after having grown up with mountain well water. Although it’s not spring, the change in feeling after showering is wild! Skin is much less irritated and feels much better. Pressure is great and choices of flow are awesome!
Date published: 2019-05-08
Rated 5 out of 5 by from Love this filter I love this filter, my shower head doesn’t get build up, I feel like the water is cleaner and doesn’t smell like Chlorine anymore. I also have been recommending this to all of my hair clients!
Date published: 2019-01-21
Rated 5 out of 5 by from Love it! The installation was very easy. I will always use a shower filter from now on.
Date published: 2018-12-23
Rated 5 out of 5 by from No more itchy skin or bad hair! My entire family noticed the difference immediately! There was so much chloramide in our city water you could smell it and I couldn’t put enough lotion on to combat my dry itchy skin. My hair looked terrible. I cannot imagine being without now. Even my husband noticed how it made his hair soft. My daughter and I who both have long hair love it! I’ve had so many compliments on my hair and don’t need all the hair products to make it look nice.
Date published: 2018-12-23
Rated 5 out of 5 by from One product always you can trust The installation is very easy and the taste of water is great. Also the price is low in comparison with the product's quality.
Date published: 2018-12-23
Rated 5 out of 5 by from Excellent Pleased with my purchase. Would recommend to people I know.
Date published: 2018-11-10
Rated 5 out of 5 by from Cleans water very good! Our shower filter was easy to install and worked with our shower head. Installation only took a few minutes. My skin isn't as dry and my hair is smooth. We live in southern Florida and this shower filter sets my mind to ease that we are using clean water.
Date published: 2018-11-08
Rated 5 out of 5 by from My only regret is that I didn't buy this sooner. I have been suffering with dull, dry, unmanageable, brittle hair for years. My house has extremely hard water. I did not want to get a whole house water softening system because I hate to bathe with soft water. It feels so slick. I bought the shower head about 6 weeks ago and noticed an immediate improvement in my hair. After every shower, my hair gets better and better. The water is obviously softer but it does not have that slippery soft water feeling. It feels...perfect. I am very, very happy that I took a chance on this product. It was too inexpensive not to try.
Date published: 2018-07-09
Rated 5 out of 5 by from It’s great Love the filter so far! My skin feels less dry and my hair is adjusting better to my new shampoo routine!
Date published: 2018-05-28
Rated 5 out of 5 by from I love my new shower filter. I like how soft the water feels, and knowing the contaminants are removed is an added plus.
Date published: 2018-05-21
Rated 5 out of 5 by from Thankful I'm loving my new shower water filter. I haven't had anymore problems with dry skin since installing filter. Prior to filter installation I always had to lotion my legs and arms because they were so dry and cracked, not any more.
Date published: 2018-05-16
Rated 5 out of 5 by from Chorine removal We are most interested in chlorine removal. Organic chemical removal is just a plus ! These units work well for this. And while we have used this filter for a shower head and it installed and worked fine, our current use is under sink cold water supply. The water taste great, the flow is fine and as it supplies water to our ice maker, the ice tastes good too! —we also use a second unit to supply water to our RV. It works well here to as a small “whole house” water filter. Again noticeable chlorine is gone.
Date published: 2018-05-15
Rated 5 out of 5 by from Amazing shower filter does its job I have been using the Aquasana shower filters for over 4 years and I have been very happy. Easy to install, good quality and my skin feels great. I will continue to use Aquasana filters. Bonus, the last time I ordered, they gave me an extra one for free!
Date published: 2018-05-10
Rated 5 out of 5 by from I didn't know what I was missing Instillation was very easy and fast. Right away I could feel the difference of the water hitting my body. I also have peace of mind brushing and rinsing my teeth in the shower. It's an awesome addition to my home.
Date published: 2018-05-09
Rated 5 out of 5 by from Love the shower filter I've been using the shower filter for over 5 years. My skin and hair feel smoother and softer than not using the filter. Definitely recommend it.
Date published: 2018-05-02
Rated 5 out of 5 by from Great help for sensitive skin I have used aqua sans repeatedly for years on my shower head . I have eczema issues and live in a hard water area of town. I was unable to tolerate my shower and bath water until using aqua sauna products.
Date published: 2018-05-01
Rated 5 out of 5 by from So far, so good. Only have been using it a few times so far. You definitely need to follow installation directions because the connection is plastic and will most likely be connecting to a metal pipe, so you need some threading sealant from the hardware store. Water comes out with enough pressure.
Date published: 2018-04-30
Rated 5 out of 5 by from The chloramine problem It's great now that we learned to ask for the chloramine filter option. You need to find out what's in your tap water. It they add BOTH chlorine AND ammonia, that makes chloramine and it is harder to filter out than either would be alone. Look it up. I'm glad I did.
Date published: 2018-04-17
Rated 5 out of 5 by from Great Investment I happen to be on city water they put all kinds of chemicals in most city water, and my hair allways seems to feel like wire But Now since i installed the shower filter my hair is soft and easy to brush and has a shine to it again, this is one of the best investments you can do for the money it works GREAT !!
Date published: 2018-04-13
Rated 5 out of 5 by from Unit performs above expectations Unit was easy to install and produces great quality water.
Date published: 2018-04-10
Rated 5 out of 5 by from Love the pressure Love the pressure and it works great. Thrilled I made the purchase!
Date published: 2018-04-10
Rated 5 out of 5 by from Great difference inhow hair and skin feels! My husband and I love the filter! We noticed a difference in how our hair and skin felt immediately. Also, we have a lot of chlorine in our water; you could smell it! I have bad asthma, and noticed I can breathe easier in the steamy shower. The customer service is excellent. We wish we had goiter this a long time ago!
Date published: 2018-04-09
Rated 5 out of 5 by from Great filter I bought this 6 montjs sgo and then i ordered another one.. BUT i ordered the wrong number and i got the filter with the shower hesd.. So i took the filter and instaled it.. Now i ordered another filter to give the shower head and filter to a friend.. i hope they will like your product..
Date published: 2018-04-09
Rated 5 out of 5 by from Great filter I washed my hair a couple of times and it looked like hay. As soon as I washed it in the shower using your filter I saw immediate results. Our water has so much chlorine in it that you can smell it. I’ll never be without my Aquasana shower filter again!!
Date published: 2018-04-06
Rated 5 out of 5 by from Great purchaae I bought the aquasana filter and shower head because I was tired of my kids and I smelling the harsh chlorine every time we took a shower. Our skin was dry as well. Especially in the winter months. So pleased that i bought this filter. The price was reasonable, the installation was simple and the results are amazing.
Date published: 2018-04-04
Rated 5 out of 5 by from Clean shower water! The first time you use this shower filter your skin will feel much better because the film of residue from body washes and soap is completely rinsed off. I thought this residual film was just an oil or some ingredient that just remained but it's not so.
Date published: 2018-04-03
Rated 5 out of 5 by from Perfect everyone in Mexico needs this I am constantly traveling to Mexico and I've noticed a great difference on the water quality in Mexico and in the US. During my travels to Mexico my skin was exposed constantly to hard water chlorine and smelly water. My skin completion changed and my skin would dry up to the point it would bleed. I found this filter online and dude it changed my life. I bought it in March 2018 and it's the 1st week of April and I already feel the change. I love it. Do you guys have any products as simple as this one that I can use for the tap water in the kitchen and bathroom handsink?
Date published: 2018-04-03
Rated 5 out of 5 by from Great deal I have been using these shower filters for my shower over a year. I recommend replacing every 4 months. They work great. Thanks Aquasana
Date published: 2018-04-03
Rated 5 out of 5 by from Shower filter review My wife's hair stylist suggested it to help her hair color last longer. We no longer have the chlorine smell in the shower.
Date published: 2018-03-30
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Learn More

Aquasana FAQs

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

    Aquasana shower systems are very easy to install, and you can do it yourself in minutes. 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. What is the flow rate of the AQ-4100, AQ-4100NSH, & AQ-4105?

    The optimum flow rate for the filter and shower head is 2.5 gallons per minute.

  3. Can I use my own shower head or hand-held wand with the AQ-4100?

    Yes, you can use your own shower head. The AQ-4100NSH is the correct model for individuals using their own shower head. Just remember the shower head needs to have the same 1/2 inch connection as standard shower heads and the ideal flow rate would be 2.5 gallons per minute. If your shower head processes more than a 2.5 gallon flow rate per minute, the quality of filtration may degrade slightly. Increasing the flow rate by changing the shower head reduces contact time with the media and will reduce the filtration quality. If you decrease the flow rate of the system by using a different shower head, or use a shower head with a shut-off switch, you may cause damage to the system and void your warranty.

  4. Can I use the shower system for drinking water?

    Drinking some of the water during your shower poses no health risk. However, Aquasana does not recommend that you use the shower system as a primary drinking water source since it is not designed as a drinking system and has only been tested under shower conditions and regulations.

  5. Can I hook the shower system up under a constant pressure application?

    No, the shower system is designed to allow the water to consistently pass through the system as it filters. If the system is under constant pressure and unable to release the pressure introduced into the system during filtration, damage can occur to the unit.

  6. How do I know if the Aquasana shower system will fit the shower pipe coming out of my wall?

    Most shower connections are 1/2 inch, which means that the Aquasana shower systems will fit the shower pipe in most homes.

  7. How much chlorine does the shower system remove?

    Aquasana shower systems are tested to remove 91% chlorine for 10,000 gallons.

  8. How do I know how many showers it takes to use 10,000 gallons?

    10,000 gallons at 2 1/2 gallons per minute = 4,000 minutes of showering
    - You can take 400 10-minute showers
    - You can take 267 15-minute showers

Learn More

User Q & A

1. Can this filter out Chromium?

Asked by: Chan
Natural coconut shell carbon filters out chlorine and other harsh chemicals, while copper/zinc media further reduces chlorine and enhances water pH balance. The Aquasana shower filter improves air quality, enhances water pH and removes over 90% of chlorine for the healthiest shower experience. Please see our Performance Data Sheet for complete test results https://cdn.aquasana.com/assets/660-UL-FAC-R1.pdf?_ga=2.67470168.892321620.1593695331-773233525.1590676156 If you have any further question please contact us at 866-662-6885. Thank you, Aquasana Customer Support
Answered by: Aquasana S
Date published: 2020-07-02

Do tiny little charcoal pieces ever come out of anyone’s shower head when it’s first turned on? I bought mine in October and it started doing that recently. 

Asked by: ShayMarie
Might be time to replace the cartridge. Supposed to change them 2 times a year or every 6 months minimum.
Answered by: Mjones5970
Date published: 2020-06-28

Can you use hot water with this filter?

Asked by: Edna
Yes, limit temperature to no more than 120 degrees. Any hotter would burn your skin anyway.
Answered by: Mjones5970
Date published: 2020-06-28

For the no shower head shower filter, do you have another style that the chrome ring is on the other side? My shower head does not have the ring that can’t be fit the shower filter of the display image. Also what does water for life discount mean?

Asked by: Kit Zeng
If you don't have a standard shower head you will need to have an adapter fitted to make it standard. If you don't know how, hire a plumber. Most showers have this standard hookup. Water for life discounts each shipment of filters so one, you always have the replacement in time to change it and get a better price per shipment.
Answered by: Mjones5970
Date published: 2020-06-03

Can any showerhead attach to this?

Asked by: Anonymous
Hello, Yes, you can use your own shower head. Just remember the shower head needs to have the same 1/2 inch connection as standard shower heads and the ideal flow rate would be 2.5 gallons per minute. If your shower head processes more than a 2.5 gallon flow rate per minute, the quality of filtration may degrade slightly. Increasing the flow rate by changing the shower head reduces contact time with the media and will reduce the filtration quality. If you decrease the flow rate of the system by using a different shower head, or use a shower head with a shut-off switch, you may cause damage to the system and void your warranty. Any further questions please contact us at 866-662-6885 to help further assist. Best, Aquasana Customer Support
Answered by: Aquasana S
Date published: 2020-05-14

Help! I cant separate the 2 parts of the shower filter to replace it. I tried hot water and tapping it with a small hammer.

Asked by: Walden
Walden, 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

Are the aquasana filters sold on amazon the same as from your site? I bought  one and the flow went down significantly...about 50%. I am returning it and ordering from you. 

Asked by: Soco
I've purchased Aquasana filters from both Amazon and Aquasana direct. They are the same. There are a lot of other manufacturers on Amazon that make "replacement" filters. I've tried a few and were not happy with any of them.
Answered by: ElliotG
Date published: 2020-03-24

Does filter remove sulfur smell?

Asked by: Sulfursmell
Yes! I was diagnosed with sulfur intolerance so showering with this filter prevents itchy rashes. I thought it might be a placebo effect but when I showered in another person's shower with no filter for several days, I started getting rashes again.
Answered by: Helps with sulfur
Date published: 2020-02-16
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