A. O. Smith Carbon & Claryum Filter Replacements for AO-US-RO-4000 — Not Compatible with SmartFlow

Upgrade your AO-US-RO-4000 with genuine Carbon & Claryum filters

Keep your drinking water system performing at its best with authentic A. O. Smith Carbon and Claryum replacement cartridges designed for The Clean Water Filter with RO Boost. These filters are built to fit your AO-US-RO-4000 setup, delivering a balanced blend of taste, clarity, and dependable filtration without altering your routine.

Two filtration stages work together to target a wide range of contaminants while preserving essential minerals and flavor. The carbon stage helps improve taste and odor, while Claryum filtration reduces a broad spectrum of substances that may affect water quality, including those you can see, smell, or taste, and those you can’t.

• Up to 99% reduction of 88 contaminants such as lead, mercury, asbestos, pesticides, pharmaceuticals, and chlorine.
• Claryum filtration addresses both visible and hidden contaminants for well rounded water quality.

Maintenance and performance matter. Each replacement is designed for 6 months or 365 gallons of use, whichever comes first, and should be paired with certified, genuine A. O. Smith replacement filters to maintain contaminant removal and system efficiency.

• 6 months or 365 gallons of use per cartridge.
• Use only certified, genuine A. O. Smith replacement filters for continued contaminant removal and system performance.

Certification and compatibility are important considerations. The filters are IAPMO certified to NSF/ANSI Standards 42, 53, and 401, signaling alignment with recognized filtration benchmarks. Important note: these replacements are not compatible with SmartFlow systems.

• IAPMO certified to NSF/ANSI Standards 42, 53, and 401.
• Not compatible with SmartFlow systems.

Real-world use cases include homes prioritizing clean-tasting water for daily hydration, families hosting gatherings, and anyone seeking consistent water quality from an existing AO-US-RO-4000 setup. The emphasis is on practical filtration benefits, not guarantees, and results may vary with water quality and system configuration.

Tips for getting the most from your replacements: keep a replacement schedule, note installation dates, and inspect seals during changes to help prevent leaks and ensure steady flow. For best results, follow the manual guidance for installation and use only genuine A. O. Smith filters.