An award-winning, NSF certified shower filter designed to reduce chlorine while maintaining verified reductions of PFAS and particulates — supporting healthier skin, hair, and everyday water wellness.
459 reviews
Regular price$89.99
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$89.99
Regular price
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Weddell Duo Shower Filter
Independently Third-Party Tested
Tested by independent, accredited laboratories to verify performance and safety.
Welcome to step zero of your self-care routine®! Weddell Duo Shower Filter is the ultimate solution for cleaner, healthier showers. NSF certified and verified to reduce harmful PFAS and particulates, the Weddell Duo enhances your shower experience while promoting better skin and hair health. Its patent-pending dual cartridge system allows you to easily monitor the filtration process, with clear filters that show when it’s time for a replacement. Designed for tool-free installation, the Weddell Duo is compatible with all standard shower heads and delivers optimal water flow without compromising performance. With long-lasting filters that provide up to 8,000 gallons of clean water, the Weddell Duo ensures every shower is a step toward improved wellness.
Key Features
Removes 99% of chlorine, PFAS, and particulates
The #1 NSF Certified Shower Filter in Performance for flow rates, capacity, and contaminant reduction
Clinically tested to improve skin hydration and scalp health
Dermatologist approved
Easy installation and compatibility with various shower heads
Long-lasting filters with visible monitoring and up to 8,000 gallons of use
What's in the Box: Weddell Duo Filter Case with 1 full set of Cartridges, plumber's tape, user guide
*Local water conditions, especially in areas with high contamination levels, may affect the filtration speed and lifespan of the filters, potentially requiring more frequent replacements.
Shipping & Returns
At Weddell Water, we strive to get your order to you as quickly as possible. All orders are shipped out on the next business day (excluding weekends and holidays) after confirmation, ensuring a fast turnaround.
If for any reason you’re not satisfied with your Weddell Duo after use, you have 30 days from the date of purchase to return it for a full refund, no questions asked. This guarantee applies to all Weddell Duo Shower Filters purchased directly from Weddell Water.
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Why Weddell Duo?
We take pride in delivering exceptional filtration and wellness benefits with the Weddell Duo, offering a shower filter that truly transforms your daily routine.
Toxin free showers
Increased skin hydration
Healthier, moisturized scalp
Supports overall health
WEDDELL
OTHERS
NSF Certified
Public Test Reports
“Forever Chemicals” PFAS Reduction
Particulate Reduction
Clinically Tested
Derm Approved
Proven results you can trust
99%
Chlorine Reduction
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Certified by NSF in 2023
*Weddell Duo was certified by NSF International.
99%
PFAS Reduction
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Verified by IAPMO Lab in 2023
*Weddell Duo was verified by an accredited lab.
99%
Particulates Reduction
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Verified by IAPMO Lab in 2023
*Weddell Duo was verified for particulate reduction.
Weddell Duo
The Weddell Duo uses a two-step, directional filtration system designed to filter shower water efficiently while maintaining strong water pressure. Water flows from top to bottom through each stage, allowing each filter to do its job without restricting flow.
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1
Water entry
Shower water enters the Weddell Duo through the top connection and flows downward through the filtration system.
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Step 1: Sediment Filter
Water first passes through the white sediment filter, which captures larger particulates such as sand, rust, and sediment. This initial stage helps protect the carbon filter and supports consistent water flow.
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Step 2: Activated Carbon Filter
After sediment filtration, water flows through the black activated carbon filter, which reduces chlorine and other chemical contaminants commonly associated with skin and scalp dryness or irritation.
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Filtered water exit
Once filtered through both stages, water exits through the bottom of the unit and continues to the shower head.
How to install
1
Detach shower head
Remove your existing shower head. Make sure the shower arm threads are clean and free of debris. Confirm both O-rings are properly seated.
2
Install
Hand-tighten the Weddell Duo onto the shower arm. If needed, apply 2–3 wraps of plumber’s tape to ensure a secure seal.
3
Reattach
Reattach your shower head to the bottom of the Weddell Duo and ensure the unit is aligned straight. Run water for 3 minutes to flush the filter, your shower is now ready to use.
Frequently Asked Questions
What makes Weddell Duo different from other shower filters?
The Weddell Duo is unique in several key ways:
Certified & Verified Performance: It’s the only shower filter certified by NSF to reduce Free Available Chlorine, while also maintaining verified performance in reducing PFAS and particulates, and other contaminants. Most other filters don’t have these certifications and can't guarantee the same level of protection.
Clinically Tested & Dermatologist Approved: Weddell Duo has been clinically tested to improve skin hydration and scalp health, and is dermatologist approved, making it an excellent choice for those with sensitive skin or scalp concerns.
Clear Dual Cartridges for Easy Monitoring: The Weddell Duo has clear dual cartridges, allowing you to see the condition of your filters. The right sediment filter shows discoloration over time, signaling when it needs to be replaced.
Long-Lasting Filters: Weddell Duo’s filters have a life cycle of up to 8,000 gallons, offering longer-lasting protection compared to many other filters on the market.
Easy Installation: Installation istool-freeand the Weddell Duo is compatible with a variety of shower heads, including rain, fixed, and handheld models.
How often do I need to replace the filter cartridges?
You should change your filters if any of the following occurs: 1) 5-6 months has passed, 2) you notice decreased water pressure and/or filter discoloration, or 3) when the rated capacity of the filter cartridge has been reached.
The frequency of replacement depends on your water usage and the quality of your water supply. Regular replacement ensures that your shower water remains clean and safe.
What contaminants does Weddell Duo remove?
Weddell Duo is designed to significantly reduce a wide range of contaminants including chlorine, PFAS, and particulates. This helps to improve the quality of your shower water for healthier skin and hair.
What are the reduction percentages for the contaminants that Weddell Duo removes?
Weddell Duo Shower Filter is NSF certified and has been rigorously tested and verified by an accredited third party lab to ensure high performance. Below are the specific contaminants it removes:
Free Available Chlorine: 99%
PFAS: 99%
Particulates: 99%
While Weddell Duo reduces other contaminants, we only publish reduction claims for those we have tested using established industry standards to prioritize transparency and reliability. Please see our testing data here for the most updated information.
Can I install the Weddell Duo Shower Filter myself?
Yes, the Weddell Duo Shower Filter is designed for easy, tool-free installation. It fits most standard showers and can be installed in minutes without the need for professional help.
Will installing Weddell Duo affect water pressure?
Weddell Duo is designed to have minimal impact on water pressure. Since our maximum Gallons Per Minute (GPM) rate is 2.8 GPM, which is much higher than typical shower heads (2.5 GPM or less), your overall water pressure will be determined not by Weddell Duo, but by your shower head.
However, as Weddell Duo reaches its full capacity, the accumulation of filtered impurities may slow down the water pressure. This is an indication that it's time to replace the filter cartridges to ensure optimal performance and maintain water pressure.
Before purchasing this shower filter, I blamed my skin and hair issues entirely on aging and skincare brands. My scalp suffered from severe dandruff and an awful itch, while my hair became dry, brittle, and prone to excessive fallout. Additionally, my skin was constantly flaky, and I even developed rosacea, pustules, and cystic acne. After installing the filter, the condition and appearance of my skin started to clear up significantly. It also restored my hair texture and noticeably reduced hair loss. This has been a truly great investment!! :)
Hi Rosalia, we're thrilled to hear how much the Weddell Duo Shower Filter has improved your health and well-being! Thank you for sharing your wonderful experience.
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Re Aman
Easy to indtall, looks good and water is softer and cleaner.
E
Eric Nation
Good Purchase!
It's a great purchase if you don't want to spend thousands of dollars on a system. By the time you are ready to change the filters, it's as easy as 1, 2, twist off the old and twist on the new. It's kind of cool how you can see what the white filter catches.
Thanks so much for sharing your experience, Eric! We are thrilled to hear that you're loving your system and saving some serious cash in the process. We designed filter swaps to be as quick and painless as a simple twist-off, and it really is super satisfying (and eye-opening!) to see that white filter actively trapping everything you don't want to be bathing in. We truly appreciate your support and are so glad to have you in the Weddell Water family! 💧
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Jamie Becker
Apartment living
I was very limited on options to soften the water, limit chemicals and remove sediment because I live in an apartment. Therefore, I don't have control of the water system. I decided to give this filter a try. It's only been about two weeks but so far I am very satisfied. I can already see particles in the filter. I also can tell a difference in how my hair feels.
Hi Jamie, thanks so much for sharing your review! living in an apartment can definitely limit your options, so we’re thrilled to hear that our filter is making such a great first impression. It’s super satisfying to see those trapped sediment particles in real-time, and hearing that your hair is already feeling the positive difference after just two weeks truly makes our day. Welcome to the Weddell Water family, and please reach out if you ever need anything at all!
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Alisa
Don't need hair conditioner
It definitely softens the water. I'm not so sure if I like it because it really softens my hair too making it less manageable. I'm hoping the water will get harder as I use the filter more but right now I'm not so sure.
Hi Alisa, thank you for leaving us a review! We're glad to hear that the filter is doing its job and effectively softening your water, though we completely understand how adjusting to softer, sleeker hair can take some getting used to when styling. Since our filters continuously purify and soften the water throughout their entire lifespan, the softening effect won't fade or wear off over time. If you ever have any questions about your system or need assistance, please feel free to reach out to our team anytime!
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