AO Smith Under Sink Water Filter System - AO-US-200

by AO Smith

Solid mid-range under-sink filtration system that effectively removes chlorine, sediment, and basic contaminants. While reliable for general water improvement, it lacks advanced filtration for heavy metals, pharmaceuticals, and emerging contaminants compared to premium systems.

• Activated Carbon Block – beneficial · Highly effective at removing chlorine, volatile organic compounds, taste and odor issues from water.
• Polypropylene Housing – safe · Food-grade plastic that is generally safe but may have minor concerns about plastic leaching over time.
• Polypropylene Sediment Filter – safe · Removes larger particles and sediment to protect the main carbon filter and extend its life.

NSF certified for chlorine removal

Easy filter replacement

Good flow rate maintenance

Improves taste and odor significantly

Reasonable operating costs

Established brand with support

Limited heavy metal filtration

No PFAS removal capability

Doesn't remove pharmaceuticals or hormones

Plastic housing concerns

Basic filtration technology

Requires regular maintenance

Made in China quality variability