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 1139.
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  • MSRP: 84.99

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

Questions? We can help

  • 866-662-6885
  • MON–FRI: 8AM–6PM CST
  • SAT: 9AM–5PM CST

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 Filters All Chemicals Made a huge difference in the water with this filter. No more inhaling chlorine water while taking hot showers. The problem is the the filter cap which needs to better quality which causes leaking. I'm just happy as long it does it jobs. Thank you Aquasana.
Date published: 2018-01-11
Rated 5 out of 5 by from Notice the difference Makes a noticeable difference in the water quality!! Love it! High quality product
Date published: 2017-12-27
Rated 5 out of 5 by from No more dried out skin and hair Had great support from Aquasana staff getting me set up for "water for life" program. Have been using shower filters for about three years. Love 'em!
Date published: 2017-12-25
Rated 5 out of 5 by from High flow shower head We previously had a low flow shower head so noticed the increase in the flow. I had thought the filter would slow the flow but it doesn't. Easy installation, according to my husband. Wish I had included the hand held piece.
Date published: 2017-12-25
Rated 5 out of 5 by from Easy install for great water These filters makea huge difference in scent and smell. I have been using them for several years
Date published: 2017-12-21
Rated 1 out of 5 by from Disappointed I bought this product a couple of weeks ago and I am disappointed because I thought it might soften the hard water but has made no change whatsoever
Date published: 2017-12-20
Rated 5 out of 5 by from Love it! Super easy to set up, the water tastes amazing, and customer service is awesome!
Date published: 2017-12-20
Rated 5 out of 5 by from Squeaky Clean I just got the shower filter & wow...it’s great the water comes out very pristine & clear. I can notice difference in my hair is much softer & I think chlorine is gone . so ,if you want to be good to your body get the Aquasana shower filter & you will be happy , like me.
Date published: 2017-12-20
Rated 5 out of 5 by from Husband loves the new shower head... ...even though he never complained about the one he removed. We may have the water analyzed just to show the actual condition of potential pests but we are fully enjoying it ever since its very easy installation!
Date published: 2017-12-19
Rated 5 out of 5 by from Great shower filter! great product. much softer hair and skin. Easy to install
Date published: 2017-12-19
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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 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

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

Asked by: Felicia
Hi Felicia - This product is both a shower head and a shower filter. You can purchase the shower filter alone to be used with your own shower head, or the alternate options we have available with a shower wand. 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

I want to use my own shower head on my filter but I can’t adjust my shower head to point down far enough because it hits the filter when trying to adjust it. Is there an extension I can use to make the shower head come out more so I can adjust it?

Asked by: Carol
As a homeowner, I would think so. I advise you ask a local plumber or a local "box store" plumbing department. Or, try searching online using your pipe size and desired length.
Answered by: T79senior
Date published: 2017-11-30

In Amazon the price for this is ways higher than it is here. Could you guys take a look at it?

Asked by: Deepu
Thank you for your interest in Aquasana! Unfortunately we do not have direct control over the pricing of our products on Amazon. Thank you, Aquasana Customer Support
Answered by: Aquasana Customer Support
Date published: 2017-10-11

We have a shower head and a hand nozzle as well. Will this work? I want one without a shower head. 

Asked by: Amanda
Thank you for your question. You can certainly 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. Thank you, Aquasana Customer Support
Answered by: Aquasana Customer Support
Date published: 2017-10-20
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