Shower Filter

The essential health and beauty product.

AQ-4125 shower water filter replacement

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Select a shower head option: - no Shower Head
  • Shower filter with head
  • Shower filter without head
  • Shower filter with white wand
  • Shower filter with chrome wand
Shower Filter - No Shower Head is rated 4.6 out of 5 by 1208.
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  • MSRP: 79.99
  • Sale: 55.99

Save 50% + free shipping with Water for Life $39.99

Questions? We can help

  • 866-662-6885

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 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
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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

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 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
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

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: 2018-11-06

CanI use my existing shower head

Asked by: Arleen Patrone
Yes, it's compatible with all standard shower heads.
Answered by: ElliotG
Date published: 2018-10-11

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: 2018-11-28
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