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AO Smith Claryum® Filter Replacement for Use with AO-CWM or AO-FF - NSF Certified to Reduce 99% of 78 Harmful Contaminants - Replace Every 6 Months - AO-US-100-R

  • Based on 175 reviews
Condition: New
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Availability: Only 7 left in stock, order soon!
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Arrives Saturday, Jul 11
Order within 22 hours and 49 minutes
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Features

  • Replacement filter for: The Clean Water Machine or The Clean Water Filter Fridge/Freezer (AO-CWM or AO-FF) - Easy replacement, no plumber necessary.
  • Advanced Filtration - Reduces up to 99% of 78 harmful contaminants including lead, mercury, asbestos, pesticides, pharmaceuticals, chlorine, and more.
  • Claryum filtration reduces harmful contaminants – those you can see, smell and taste, and those you can’t – for optimally clean water.
  • Use only certified, genuine A. O. Smith replacement filters for continued contaminant removal and system performance. Filters up to 200 gallons or every 6 months.
  • WQA tested and certified to NSF/ANSI Standards 42, 53, and 401.

Description

The A.O. Smith AO-US-100-R is a premium replacement water filter utilizing Claryum filtration technology. It removes up to 99% of 78 harmful contaminants—including lead, mercury, asbestos, pesticides, pharmaceuticals, and microplastics. Designed for easy, tool-free twists, it lasts for 6 months and is NSF/ANSI certified.

Model Number: AO-US-100-R


Product Benefits: Reduces up to 99% of 78 harmful contaminants


Brand Name: A. O. Smith


Set Name: Claryum


UPC: 811640030209


Global Trade Identification Number: 00811640030209


Unit Count: 1.0 Count


Number of Items: 1


Manufacturer Part Number: AO Smith Replacement


Manufacturer: AO Smith


Best Sellers Rank: #88,601 in Tools & Home Improvement (See Top 100 in Tools & Home Improvement) #52 in Undersink Water Filtration Replacement Parts


ASIN: B07NK5LCCV


Customer Reviews: 4.8 4.8 out of 5 stars (175) 4.8 out of 5 stars


Material Type: Carbon Block


Compatible Water Purifier Models: A.O. Smith AO-FF


Item Dimensions D x W x H: 2"D x 2"W x 5.5"H


Item Weight: 0.46 Pounds


External Testing Certification: NSF 42 - Reduces aesthetic impurities, NSF 53 - Reduces contaminants with health effects, NSF 401 - Reduces 1 or more of 15 emerging contaminants


Frequently asked questions

If you place your order now, the estimated arrival date for this product is: Saturday, Jul 11

Yes, absolutely! You may return this product for a full refund within 30 days of receiving it.

To initiate a return, please visit our Returns Center.

View our full returns policy here.

  • Klarna Financing
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  • Afterpay Financing
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  • Financing through Apple Pay
Leasing options through Acima may also be available during checkout.

Learn more about financing & leasing here.

Top Amazon Reviews


  • Good quality
Good quality and easy to replace.
Reviewed in the United States on April 24, 2026 by William

  • Filters
I’ve always bought these and they work well.
Reviewed in the United States on April 20, 2026 by Maria

  • Good externally mounted replacement for refrigerator ice maker/water filter
I have been using these external filters now for a few years and they are of good quality. I can definitely taste an improvement in my city water. I use this in place of the refrigerator internal water filter. It is more economical and does a much better job of filtering out most of the chemicals, pesticides, etc. compared to the OEM refrigerator filter. ... show more
Reviewed in the United States on June 15, 2025 by Mary D.

  • Does the job
The best
Reviewed in the United States on April 30, 2026 by Cynthia Stawicki

  • Claryium filters work well when the 'zon sends the correct model
Claryium does well removing the chemical smell injected by our water boys here in the holler. easy install. Just wish they'd send the right one on auto delivery.
Reviewed in the United States on October 5, 2024 by Curmudgeon

  • Great filter
This filter works great. I use it for an under cabinet ice maker. It removes all the rust and sediment in my well water. Ice is clear and fresh!
Reviewed in the United States on December 8, 2025 by Matthew Bejgrowicz

  • Right product
Exactly what I needed
Reviewed in the United States on April 15, 2026 by Smith

  • Simple screw-on replacement
Very easy to replace.
Reviewed in the United States on August 13, 2025 by Bill G.

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