A.O. Smith AO-US-100-R Claryum Filter Replacement



A.O. Smith AO-US-100-R is a replacement filter for The Clean Water Machine and The Clean Water Filter Fridge/Freezer (AO-CWM or AO-FF) water purifiers. It reduces up to 99% of 77 harmful contaminants including chlorine, chloramine, lead, mercury, BPA, PFOA/PFOS, sediment and cysts with its four filtration methods. It also helps improve the turbidity of the water. For continued contaminant removal and system performance, use only certified, genuine A. O. Smith replacement filters like AO-US-100-R.


Filtration Methods:

  1. Activated Carbon
  2. Catalytic Carbon
  3. Ion Exchange
  4. Mechanical Filtration



  • Easy to install
  • NSF Certified to Standard 42, 53, 401 and P473
  • Can last up to 6 months



Height: 5.5 in.

Width: 2 in.

Depth: 2 in.

Flow Rate: 0.5 (Gallons per minute)

Min. Feed Temp: 40° Fahrenheit

Max. Feed Temp: 90° Fahrenheit

Product Weight: 1 lb.