AO Smith SmartFlow High-Efficiency Under Sink RO System

Core Benefits & Specs

Clean, Healthy Tap Water - Reduce up to 99% of 90 Contaminants

Experience clean, healthy tap water by reducing up to 99% of 90 common contaminants in your home, including fluoride, chlorine, chloramine, lead, arsenic, pesticides, PFOA/PFOS, cysts, and microplastics.

Advanced Filtration System

Our under counter reverse osmosis filter system is independently tested to NSF standards 42, 53, 58, and 401, ensuring reliable and effective filtering.

Dedicated Faucet

Keep your home's kitchen water flowing with a chrome air gap faucet. This faucet design prevents backflow into the filtration system by draining water from the air gap hole on the side of the faucet. Ensure that the drain line is short, direct, and unobstructed.

Easy Filter Replacements

Replace used cartridges with ease. Twist out the used filter and install an AO Smith replacement. Use only certified, genuine AO Smith replacements to maintain peak performance.

All-Inclusive Kit

Your kit includes the first set of filters, an RO tank, a faucet, and all parts required for under countertop installation. Use part numbers AOS-HERO-S1S3 (B0CCQ9TKMM) and AOS-HERO-S2 (B0CCQCNDLK) for genuine replacements.