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 1208.
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50% OFF SHOWER FILTERS WITH WATER FOR LIFE until Jan 21
  • MSRP: 84.99
  • Sale: 59.49

Save 50% + free shipping with Water for Life $42.49

Questions? We can help

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

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 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
Rated 5 out of 5 by from very easy for me to install I have used this filter for several years and I would not be without it. I know the water here at the apartment is no good because of the city pipes that supplies the building. Comforting to know that I do not smell the chlorine and not getting it on my skin everyday. My research on the Internet has led me to continue to trust what I am getting from Aquasana. Thanks, Glenn
Date published: 2018-03-27
Rated 5 out of 5 by from Delighted I did this! I'm a very allergic person who had terribly dry skin and already the itching has abated. So pleased.
Date published: 2018-03-27
Rated 5 out of 5 by from A better shower experience Great filter for your shower. Gives a cleaner feel with no residue.
Date published: 2018-03-21
Rated 5 out of 5 by from Bye Bye Chlorine! I finally got rid of that terrible (and poisonous) smell and taste of chlorine! Now my shower's water is way more sweet and healthful. Just love it :)
Date published: 2018-03-20
Rated 5 out of 5 by from Awesome product My wife has MCS,(Multiple Chemical Sensitively) and our city had added chlorine which made it almost impossible for her to shower. This filter is easy to install and does a fantastic job getting chemicals out. Thank you
Date published: 2018-03-19
Rated 5 out of 5 by from Great features! I'm so pleased with this shower filter. Had it for 1 month and could see a difference right away. My hair is softer, shinier and most of all my hair colour is blonde and not brassy. The best thing I've done for my hair ever.
Date published: 2018-03-15
Rated 5 out of 5 by from Its wonderful! I bought two of the shower filters, one for each bathroom. I have sensitive skin, dry hair, and itchy skin from the water where I live. After I put both filters in my bathroom and took a shower in my bathroom I could tell the difference right away on my skin and hair! I am so glad I ordered them, which by the way was a buy one get one free during the president day sale in February! Awesome deal and price! P.s. I know brush my teeth in the shower because of the clean water!!
Date published: 2018-03-14
Rated 5 out of 5 by from Great product One shower is all it takes to see the difference! Our kids have really sensitive skin and the shower filter is really helping noticing less dry and itchy skin. From start to finish, the process of installing this shower filter was a breeze.
Date published: 2018-03-08
Rated 5 out of 5 by from Our new shower filter I am glad that the filter was a fairly quick installation. The fact that the chlorine is not in the shower water anymore is a relief to me. My skin does not feel as dry afterwards.
Date published: 2018-03-07
Rated 5 out of 5 by from easy to install The filter functions as described. Happy with it.
Date published: 2018-02-27
Rated 5 out of 5 by from Love the shower filter! I purchased this a little over a month ago. We temporarily moved into a rental and have very hard water. Within two weeks I saw a huge difference in my hair as far as dryness and shine. My skin was less dry and itchy. I haven’t had to adjust the spray on the shower head at all as it was perfect from the factory.
Date published: 2018-02-22
Rated 5 out of 5 by from Taking care of my skin ! My skin and body does not like to be coveted in chlorine. Aquasana shower filters are the best way to treat your body. You'll know the difference immediately. I am sensitive from a heart operation and the way filtered water changes the way I feel is simply amazing. Aquasana shower filters I find are the best at what they do.
Date published: 2018-02-22
Rated 5 out of 5 by from Definitely worth it After just my first shower I noticed a difference in my hair. It was so much less frizzy & seemed much less dry. I asked my boyfriend if he noticed the difference & because he thought it was silly he said he thought it was his new shampoo, but he finally admitted to noticing the difference. I definitely recommend this to anyone.
Date published: 2018-02-20
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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

Can the shower filter be on an angle as opposed to vertical as shown in your images? Our shower is straight down vertical, so the filter cartridge would therefore be on an angle. Thanks

Asked by: Anonymous
Hello, Thank you for your question. We recommend to keep the shower system vertically positioned. Thank you, Aquasana Support
Answered by: Aquasana S
Date published: 2019-01-16

I have a septic system.  Is this shower filter good for well water filtering?

Asked by: Sandy newsepticowner
Hello, The shower system is certified to remove chlorine. In addition, it will remove/reduce other harsh synthetic chemicals, lead, mercury, and other known contaminants removed by carbon filtration. Natural coconut shell carbon filters out chlorine and other harsh chemicals, while copper/zinc media further reduces chlorine and enhances water pH balance. If you are on well water, please contact us directly at 866.662.6885. We do have a specialty shower filter that is designed to better handle the heavy metals and other components typically found in ground water. Thank you, Aquasana Support
Answered by: Aquasana S
Date published: 2019-01-16

Does this product work for well water?

Asked by: Jennifer100
Hello Jennifer, The shower system is certified to remove chlorine. In addition, it will remove/reduce other harsh synthetic chemicals, lead, mercury, and other known contaminants removed by carbon filtration. Natural coconut shell carbon filters out chlorine and other harsh chemicals, while copper/zinc media further reduces chlorine and enhances water pH balance. Thank you, Aquasana Support
Answered by: Aquasana S
Date published: 2019-01-14

How often does the filter need to be replaced...there is only two of us in the home

Asked by: KJDI
Hello, Thank you for your question. Kindly keep in mind that the Shower System has been rated to last 400-10 minute showers or 10,000 gallons of water usage. For a household of 3-5 we recommend a filter change every 6-months. However, for a household of 1-2 the recommended time frame of 6-months can be extended to a 12-month interval if needed. Thank you, Aquasana Support
Answered by: Aquasana S
Date published: 2019-01-09

Does this filter remove or reduce iron in water? Looking for a filter to filter iron to maintain my blonde without turning it orange.

Asked by: SaraS51
Hello SarsaS51, Thank you for your question and your interest in Aquasana! However, unfortunately our Whole House Well Water System does not reduce nor remove iron/sulfur. We recommend getting an industrial iron tank that is designed to handle higher levels of iron intake. If you have any further questions please contact us at Support@aquasana.com. Thank you, Aquasana Support
Answered by: Aquasana S
Date published: 2019-01-07

can we get hot or worm water though the shower filter ?

Asked by: Md..
The filter doesn't affect the temperature of the water.
Answered by: seacoastnotary
Date published: 2018-12-14

Does this include the shower filter?

Asked by: Morky
yes
Answered by: avi.
Date published: 2018-12-03

Does the shower filter filter out MTBE or Acrylamide?

Asked by: DetoxTime
Reverse osmosis plus activated carbon is becoming the first choice for removal of the gasoline additive MTBE that's becoming more prevalent in our water supplies. activated carbon has a “moderate probability” of treating acrylamide, being effective only “in certain cases”. Although its use is regulated by the EPA, no preferred water treatment exists: Currently, there are currently no acceptable means of detecting or removing acrylamide from drinking water.
Answered by: Aquasana Service Team
Date published: 2018-11-16
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