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 1156.
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$5499 SELECT SHOWER FILTERS - limited time!
  • MSRP: 79.99
  • Sale: 54.99

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 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
Rated 5 out of 5 by from Super small design and easy install We've owned carbon filters before that were twice this big and so we really love the compact design which also keeps the shower nozzle the same height as before you connect it. Wonderful water too! We even are tempted to drink this water rather than use our undercounter system. It was a 2 minute install as well. Just keep tightening till you don't have any leaks. You will love it.
Date published: 2018-02-20
Rated 5 out of 5 by from Home Easy to install. I buy for filter the shower from chloride .
Date published: 2018-02-19
Rated 5 out of 5 by from Makes my hair soft This filter on my shower removes many of the chemicals that make my hair brittle and coarse, no I bought one for my boyfriend and have noticed his hair is looking softer and shiner.
Date published: 2018-02-16
Rated 5 out of 5 by from Quality filter Shower filter was easy to install and is a great quality filter.I'm very happy and would purchase again
Date published: 2018-02-16
Rated 5 out of 5 by from Best Shower Filters Fast professional, courteous service and the shower filters in my opinion are the best that I've seen on the market.
Date published: 2018-02-16
Rated 3 out of 5 by from Shower filter My husband won,t install it because he thinks it looks and feels too heavy.
Date published: 2018-02-14
Rated 1 out of 5 by from easy to set up I purchased this product about a month ago. I honestly cannot tell the difference. I still smell the hard water when I shower, and my skin is still very dry. I thought this would make my skin feel like I had soft water, but it does not. I would not waste your money on this. I am very disappointed
Date published: 2018-02-14
Rated 5 out of 5 by from Does the job It does what it is intended to do. I can take a long hot shower if I want and my skin is not irritated and dried out like it was before without it because of the excessive amount of chlorine added to the water where I live
Date published: 2018-02-14
Rated 5 out of 5 by from Easy to install ! Live in area with real hard water. It made the shower more enjoyable, no chlorine smell anymore. Itchy skin has improved greatly, real glad we installed in our showers.
Date published: 2018-02-12
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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

Is this shower filter compatible with my costco shower head Waterpik Cayman Handheld Shower Head with 14-spray Settings?

Asked by: Tatiana
The shower filter fitting is same size as what comes out of wall. Hope this helps.
Answered by: cputraveler
Date published: 2018-02-06

Does the AG 4105 remove or reduce chloramine?  

Asked by: Ritz
Yes. I used my Palin pool test kit to measure the tap water and the filtered water and saw a 90% reduction in the chlorine level.
Answered by: Jared
Date published: 2018-02-19

Before I purchase this I just want to ale sure that’s the shower device and a filter?

Asked by: Felicia
Answered by: SONVUTOY
Date published: 2018-01-20

What size should be the water pipe.

Asked by: Saeed
Most shower connections are 1/2 inch, which means that the Aquasana shower systems will fit the shower pipe in most homes. Thank you, Aquasana
Answered by: Aquasana Customer Support
Date published: 2018-01-17

Does it filter sulfer out??

Asked by: Hydro
Our shower filters are certified to NSF standards 42 and 61. The media will help reduce any odors that come from the sulfur in your water during the filtration process. Please let us know if you have any additional questions!
Answered by: Aquasana Customer Support
Date published: 2018-01-11

Water comes out around the seal even after installing a new filter. I have tighten it as far as I can. Any thoughts on what I should do next?

Asked by: Dick
Hello! Please contact our service team at 866.662.8665 and anyone here will be happy to assist in troubleshooting the leaking system. We look forward to hearing from you! Thank you, Aquasana Customer Support
Answered by: Aquasana Customer Support
Date published: 2017-12-06

Can I install this filter with my existing showerhead?

Asked by: Linda68
It's advised to use their showerhead with the filter.
Answered by: Charlotte
Date published: 2017-11-08

I installed a water softener system in our house but my hair still turns green, and it must be the copper pipes.  Does this product reduce or eliminate copper at point of shower head?

Asked by: Cd1234
I have hard water but no water softener so I understand the buildup on faucets. I haven't have any buildup on my shower head since using this.
Answered by: Pondering
Date published: 2017-11-01
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