AO Smith Carbon & Claryum® Filter Replacements for AO-US-RO-4000


Replacement Carbon & Claryum® filters for AO Smith 4-Stage Reverse Osmosis with RO Boost (AO-US-RO-4000).

SKU: AO-4000-Carbon Category:


  • Replacement Carbon & Claryum® filters for: The Clean Water Filter with RO Boost (AO-US-RO-4000).
  • Use only certified, genuine A. O. Smith replacement filters for continued contaminant removal and system performance.
  • Replacements made easy – no plumber necessary.
  • Reduces up to 99% of 88 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.
  • Carbon & Claryum filters last 6 months or 365 gallons.
  • NSF certified to standards 42, 53, 401 + P473.
  • Includes one Claryum Filter and one Carbon Filter.