Premium
Shower Filter

The essential health and beauty product.

AQ-4125 shower water filter replacement

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Select a shower head option: with Shower Head
  • 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 1217.
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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
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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

Does this product remove Chloramine?

Asked by: Brandon N.
Yes
Answered by: Duy’s
Date published: 2019-03-10

Hi, after how many showers (approx) does the filter need to be replaced?

Asked by: drkate
Hello, Thank you for your response. 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. If you have further questions please contact us at Support@aquasana.com. Thank you, Aquasana Support
Answered by: Aquasana S
Date published: 2019-02-22

just installed, very easy, however it leaks where the plastic neck of filter connects to swivel collar. It will not tighten down so the filter cartridge swivels around. not happy

Asked by: nancyscherer
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 sales department at 866-662-6885, options 1 and 1 to discuss a potential solution for your home. Thank you, Aquasana Support
Answered by: Aquasana S
Date published: 2019-02-18

can you use warm or hot water with this filter? does warm temp make the filter work?

Asked by: Bennylol
We have used these filters for years and found them to work well with all temps. 
Answered by: brightshoe
Date published: 2019-02-02

Does this product work for well water?

Asked by: Jennifer100
Yes. We have used ours with well water.
Answered by: A4water
Date published: 2019-01-19

we recently installed a new hot water heating system in our house. Since then my wife's hair which is dyed blond is turning greenish blue. I was told that your filter will remove excess copper from the water. Is that true?

Asked by: BillN
I do not about minerals. . It did not take out the magnesium in my local water company. I switched t a different filter at Amazon and am very happy with it.
Answered by: Tom the reviewer
Date published: 2019-01-20

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

Asked by: Sandy newsepticowner
I have a well with hard water and this helps keep my hair softer and I think not dry my skin out so much.  Wish I could install a full system but my setup won’t allow it without serious replumbing so this is my next best solution.
Answered by: Pondering
Date published: 2019-01-19

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: Gavin
I can't say for sure without seeing your setup. But up to 45 degrees should be fine. Upside down no, as it is capturing all the stuff in water you don't want. This stuff can settle in certain spots as the filter ages, and you don't want it to just come through. Have a plumber change the shower head angle.
Answered by: Mjones5970
Date published: 2019-01-18

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: 2019-02-02

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: 2019-01-18

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: 2019-01-18

Does this include the shower filter?

Asked by: Morky
yes
Answered by: avi.
Date published: 2019-01-18

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: 2019-02-15

I have the AQ-4100 shower filter it works great and easy to install. Can I recycle it. if so how. thanks

Asked by: mike thomas (recycle)
Mike, 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 shower filters, you may include them in the recycle bin with the rest of your recyclables. Thank you, Aquasana
Answered by: Aquasana Service Team
Date published: 2019-01-18

CanI use my existing shower head

Asked by: Arleen Patrone
Yes, it's compatible with all standard shower heads.
Answered by: ElliotG
Date published: 2019-01-18

Does this filter remove fluoride?

Asked by: Katy51306
Fluoride removal requires special filtration through a membrane, which the Shower system does not contain.
Answered by: Aquasana Service Team
Date published: 2019-01-15

I live in a area with high lead levels in the water would this product be a good fit for that situation

Asked by: Feliciagonzalez16
Activated carbon filters can remove low levels of iron. However, the maintenance and replacement of filter systems are very high because high levels of iron can clog the filters and are not completely removed by carbon filtration alone.
Answered by: Aquasana Service Team
Date published: 2019-01-25

How does your showerhead support the bag or whatever it is?

Asked by: Kd55
The Shower system comes with a top crown that screws into the pipe coming out of your wall. The filters are rather light at 3lbs.
Answered by: Aquasana Service Team
Date published: 2018-10-03

I would like to buy it now but it has to have the filter for chlorine and Chloramine...how would I know?

Asked by: MMERLIN
We offer a Chloramine shower system that will remove both. It is currently not available online but may be purchased by calling 866.662.6885
Answered by: Aquasana Service Team
Date published: 2019-01-11

Do these remove dioxins from the water?

Asked by: Dar1
The following treatment method(s) have proven to be effective for removing dioxin to below 0.00000003 mg/L or 30 ppq: granular activated carbon. All of our systems are made with granular activated carbon, so they will remove dioxins.
Answered by: Aquasana Service Team
Date published: 2018-09-21

Does the shower filter remove fluoride?

Asked by: Chrissie
Flouride removal requires special filtration through a membrane. Our Reverse Osmosis system is NSF certified to remove over 95%of flouride in you drinking water, as well as 87 other contaminants.  https://www.aquasana.com/drinking-water-filter-systems/reverse-osmosis-claryum  If you are interested in a system, I highly suggest you speak to one of our Home Specialists so they might discuss what options may be best for you before you purchase something you may not need, etc. Please call 866.662.685 or e-mail sales@aquasana.com to speak with a Specialist!
Answered by: Aquasana Service Team
Date published: 2018-09-18

Does it filter fluoride?

Asked by: Stephi
Fluoride removal requires special filtration through a membrane. Our shower systems will not remove fluoride. Our Reverse Osmosis system is NSF certified to remove over 95%of fluoride in you drinking water, as well as 87 other contaminants.  https://www.aquasana.com/drinking-water-filter-systems/reverse-osmosis-claryum 
Answered by: Aquasana Service Team
Date published: 2018-08-29

Can i use the shower filter with a triton electric shower and its existing shower head?

Asked by: Fish
You should be able to use the filter as the psi does not exceed 80, their is no shutoff valve on the wand that will create pressure on the filter, and the gpm does not exceeded 2.5. However, please note that our system has not been tested with Triton Electric Showers, so we cannot guarantee its performance.
Answered by: Aquasana Service Team
Date published: 2018-08-29

Does Aquasana shower filter remove trihalomethanes (THMs)? If so, what percentage of removal rate is?

Asked by: Shower
Good chlorine reduction. THM derivitive from Chlorine. Between 91% and 95% depending on chlorine levels in water. Includes both KDF and coconut shell carbon to reduce chlorine as well as other synthetic chemicals and contaminants. Upflow design maintains water pressure and showerhead height.
Answered by: Mjones5970
Date published: 2018-07-26

Does it remove FLOURIDE?

Asked by: Jaysona
I have not seen any description or review that states the shower filter removes fluoride.
Answered by: seacoastnotary
Date published: 2018-07-09

Hello, does this filter system work on both cold and warm water settings? I take constant warm showers and had read online that some filters won't work on warm water to remove impurities.

Asked by: Sammy
We shower with warm water. We have been using this filter for 2 years and more and satisfy our needs.  
Answered by: Theresa
Date published: 2018-07-03

Can I use the shower wand to use on the filter?

Asked by: Marty1
It all depends. I'm not entirely sure. But I had a non-Aquasana shower wand that did not fit. I wished I paid the extra few dollars to purchase the other Aquasana model that comes with it's own shower wand.
Answered by: SirChoc
Date published: 2018-06-22

What is the recurring fee for water for life?

Asked by: LaChandra
Water for Life is a contract-free, no obligation replacement cartridge auto-ship program. Sign up is free of charge and you can cancel at anytime. Water for Life ensures you get the best discounts on replacement cartridges, free shipping on Water for Life product purchases, and an extended warranty. Your only cost on the program will be for the filters themselves. Thank you, Aquasana Customer Support
Answered by: Aquasana Customer Support
Date published: 2018-06-15

Looking for a filter to remove sulfer odor . Do you make something for that ?

Asked by: Jazzman
Good Afternoon, We do not have any shower filters that are specifically designed for sulfur reduction. However, if you contact us at 866.662.6885 we can place an order for a well water shower filter which may help reduce the sulfur levels in your water. Thank you, Aquasana Customer Support
Answered by: Aquasana Customer Support
Date published: 2018-06-02

Hello, My husband and I live in a co-op building, Bronx, New York. We are aware that this area is high in sediment.  Will the Aquasana Shower Filter work? Thank you. If not, do you have any recommendations?

Asked by: Irma
Hello! The filter can certainly help reduce rust, sediment and silt in the water. However, it is not designed to be used as a water 'softener' and will not make your water softer or remove the mineral content from the water. It's main function will be chlorine reduction. Thank you, Aquasana Customer Support
Answered by: Aquasana Customer Support
Date published: 2018-06-02
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