AO Smith Reverse Osmosis Water Filter Membrane Replacement for AOS-HERO-S2

About this item

• Clean, Healthy Water - Reduce up to 99% of 90 contaminants including chlorine, chloramine, lead, pesticides, PFOA/PFOS, cysts, microplastics, and more from water in your house.
• Replacement membrane tested independently to NSF standards 42, 53, 58, and 401 for advanced filtration.
• Stage 2 reverse osmosis replacement membrane for AOS-HERO-CHR (B0CCQF4QZX) systems. Replace every 12 months or 730 gallons whichever comes first.
• Use only certified, genuine AO Smith replacement filter cartridge for continued contaminant removal and system performance.