💦 Elevate Your Water Game—Because You Deserve the Best! NSF certified for peace of mind in your water quality. Enjoy sediment-free water from every tap in your home. Built-in pressure relief for quick and easy filter replacements. Use standalone or combine with other A.O. Smith systems for tailored filtration. No plumber needed—install it yourself with included tools. NSF Certified Sediment Reduction Easy Installation The AO Smith Single-Stage Whole House Water Filtration System (AO-WH-PRE) is designed to effectively reduce sediment, dirt, and rust, ensuring clean water throughout your home. With easy DIY installation and NSF certification, this system offers both convenience and quality, making it a smart choice for health-conscious homeowners.