AO Smith Carbon Replacement Filters for AOS-HERO RO Systems | AOS-HERO-S1S3 Cartridges

Purify your home water with AO Smith carbon replacement cartridges

Upgrade your AO Smith AOS-HERO RO setup with carbon replacement filters designed to reduce common concerns in household water. These cartridges are built to work with the AOS-HERO-CHR systems, helping you experience water that smells and tastes fresher, whether you’re hydrating, brewing coffee, or cooking. While results may vary with household usage, many households notice a more enjoyable water experience after installation.

What this replacement cartridge delivers

• Reduces up to 99% of up to 90 contaminants, including chlorine, chloramines, lead, pesticides, PFOA/PFOS, cysts, microplastics, and more—supporting clearer, crisper water from your tap.
• Independent NSF testing covers standards 42, 53, 58, and 401 to validate filtration performance.
• Use of certified, genuine AO Smith replacement cartridges helps maintain consistent contaminant removal and overall system reliability.
• Stage 1 and Stage 3 carbon cartridges are designed for AOS-HERO-CHR systems, with a replacement cadence of six months or 365 gallons, whichever comes first.

Why choose AO Smith replacement cartridges

• Designed to complement your existing AOS-HERO RO filtration, supporting ongoing filtration performance.
• Genuine AO Smith parts help preserve system efficiency and water quality over time.

Real-world use and maintenance

• Ideal for daily drinking water, coffee, tea, and cooking needs where clean water matters.
• Plan replacements around six months or 365 gallons to maintain expected filtration results.

Note: This replacement is intended for use with AOS-HERO-CHR systems and is one part of a broader water filtration strategy. Always follow manufacturer guidance for installation and maintenance to optimize performance.