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 583.
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  • MSRP: 84.99

Save 20% + free shipping with Water for Life $67.99

Questions? We can help

  • 866-662-6885
  • SAT: 9AM–5PM CDT

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


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

How It Works

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 4 out of 5 by from SO FAR SO GOOD The first day I used this filter I was in heaven because the water tasted and smelled so clean. After that, it didn't have the unbelievable freshness of the first time (probably because I had been showering in filth water), however, it has GREATLY improved my skin and my hair continuously. I moved to a place almost a year ago and the water is sickening. I have a hard time believing they provide this water to consumers. My hair felt like I washed it in grease and I dreaded taking a shower more than not taking a shower. This filter has held up so far. No leaking. It's only been about 3 weeks but it has made such a difference in my life. I just hope it lasts for several months.
Date published: 2017-05-23
Rated 5 out of 5 by from No more dry, itchy scalp! After purchasing our home, my husband complained that his scalp was always dry and itchy. We tried a myriad of natural remedies, treated it topically, changed shampoo and conditioner, etc., until one day I had an "ah-ha" moment! Maybe it was our water quality! We've been aquasana customers for over a decade for our drinking water so we thought we'd try a shower filter. Low and behold after 2 showers my husband claims his scalp is back to normal and I've noticed I'm no longer needing to moisturize after a shower! Thank you, Aquasana!
Date published: 2017-04-11
Rated 3 out of 5 by from Significant water pressure problem Our shower water had a smell of chlorine, while we have been successfully filtering our drinking water in the kitchen with Aquasana filters for the past 10 years. So, we decided to try this filter for my daughters shower. She complained about significant loss of water pressure to take shower, so this was our experience with this filter.
Date published: 2014-12-06
Rated 3 out of 5 by from Not Satisifed I want to return the shower filters. Please provide return instructions. Considering the cost, I expected to take a shower and to say, "Wow, what a difference!". That did not happen. There is nothing to make me feel like I made a wise investment.
Date published: 2015-12-11
Rated 4 out of 5 by from Amazing filter - it really softens the water! I love the quality of the water that comes out of this purifier, and I love the adaptable shower head. This is SO much better than the shower head I had, and gives a good, heavy "spray." After two weeks, I already notice my skin is softer. It is just that heavy, though, so it pulled the pipe away from the wall enough that the spray hit the back of the tub and flooded my bathroom floor. However, by adjusting the shower head so it didn't spray so strongly and fell more heavily, I solved this problem.
Date published: 2017-01-24
Rated 3 out of 5 by from yes & no I'm not itching after my showers, but my skin is still unusually dry. There's black particles coming out the shower after 2 weeks of use, not sure if any of these problems have to do with hot water.
Date published: 2016-11-17
Rated 5 out of 5 by from Shower Filter I have nothing bad to say at all. I love this product. Suddenly my bodywash would not suds up at all in my shower. I changed the pouf and bodywash, even tried soap and a washrag, and nothing. I thought it must be the water - it was the only thing left. I did some research and Aquasana was the clear favorite with the best reviews. I bought it, my friend installed it, and I have been happy ever since. Plenty of suds again! I have skin problems too and this is helping that as well.
Date published: 2016-11-03
Rated 5 out of 5 by from fantastic filter! We recently moved to Southern Louisiana. I noticed after about 6 months that my hair was turning brittle, experiencing hair loss and would not curl. I was also experiencing severe scalp irritation to the point of sores on my scalp. The water here is extremely hard here compared to our home in Virginia. Since using Aquasana my hair is soft and healthy, not falling out, my scalp is healing and my hair is holding curl again! I haven't even changed shampoos. I'm so very thankful!!
Date published: 2017-05-23
Rated 3 out of 5 by from It's OK We use the shower filters, but I don't notice my skin being any softer than without the filter. I still use for a healtier choice.
Date published: 2015-08-25
Rated 3 out of 5 by from Works Works good, too bulky so you lose a foot 1-2 in shower.. wish they made the filter to go back toward wall so dont lose range.
Date published: 2016-05-15
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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

Why are the replacement filters so expensive???  I just purchased this product, was excited about it, but then discovered the replacement filters cost almost as much as the product itself!!!  I could have my whole house filtered for less.  Will return.

Asked by: lrussell

What is the rated flow rate through the filter assembly?

Asked by: rock11kjl

Does this remove iron

Asked by: Dumpy
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