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 1229.
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50% OFF SHOWER FILTERS WITH WATER FOR LIFE until Jul 13
  • 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–8PM CDT
  • 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

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 Immediate benefits I just purchased this and have used it twice now and am already seeing a difference in my hair and skin. I live in Arizona so the water here dries out my hair and skin, but after installing the shower filter I immediately have noticed the softness in my hair and skin. Definitely worth getting!
Date published: 2020-05-02
Rated 5 out of 5 by from Very pleased with purchase Easy installation; fit perfectly onto our current shower fixture. Immediately noticed that our skin wasn’t as dried out/tight feeling after showers. Would absolutely recommend this product.
Date published: 2020-04-29
Rated 5 out of 5 by from This product works perfectly! Thankyou for a great filter for my shower! It was easy to install. And though I found it a bit of a pain to let it flush out the filter a few times, it was fine: it did not stain the bathtub like I was warmed it might. And after that always delivers clean non itchy, non-hurting my eyes water! Thanks!
Date published: 2020-04-24
Rated 5 out of 5 by from The best shower head in twenty years Installation is easy and it's the best shower head I can ever remember using.
Date published: 2020-02-18
Rated 5 out of 5 by from Shower filter My hair is completely improved. What more can I say?
Date published: 2020-01-27
Rated 5 out of 5 by from My hair says thank you every day!! My hair felt healthier from the first time I used the water filter. And my skin is softer as well. Little did I realize was this was the same water filter my parents have been using for years. And I always like the way my hair felt when I visited them.
Date published: 2020-01-05
Rated 5 out of 5 by from Awesome Filter The filter was easy to install but the metal connector was hard to attach to the inflow pipe. It was rather slippery. Other than that, the water quality has improved and the water acquired a better smell. It also became softer on the skin. I highly recommend this.
Date published: 2020-01-02
Rated 5 out of 5 by from great product I am enjoying the shower filter especially good for my hair. My skin feels better,less dry and itchy. I will recommend to a friend.
Date published: 2019-09-10
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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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