O. Smith AR75-A-S-1E Water Purifier

• Design: Elegant and compact design for easy installation; features a filter replacement alert displayed on the machine to ensure pure water for the whole family.
• RO-Side Stream Technology: Increases purified water output by 66%, reduces wastewater by 56%, and extends filter life by 1.5 times compared to standard RO filters.
• IRO-EMS: New-generation electronic monitoring system that tracks and alerts on the purifier’s operational status, ensuring your family always has the purest water.
• LED Display: Provides full information on the purifier’s status, making it easy to control and monitor.
• Compact Design: Sleek and space-saving design that fits conveniently under the sink.

RO-Side Stream Technology (U.S. Patent)

The RO-Side Stream filter is an innovative breakthrough by A. O. Smith, patented in the U.S. (patent US8,337,698 B2). It enhances performance by increasing purified water yield by 66%, reducing wastewater by 56%, and extending filter life 1.5 times compared to standard RO filters. It offers a unique 1:1 wastewater-to-purified-water ratio and effectively removes 99.9% of heavy metals (such as arsenic, lead, mercury) and harmful bacteria.

Standard Filtration Steps

Electronic Monitoring System (EMS)

O. Smith’s EMS integrates advanced monitoring and alert functions to ensure optimal operation of the water purifier. Features include:

• Filter Replacement Alert
• Leak Detection
• Automatic Filter Flushing
• Integrated Solenoid Valve
• Operational Error Alerts

Comprehensive Savings Solution

High Performance

Compact and Convenient Design

Designed for easy installation under the sink, this compact and convenient purifier suits any household, ensuring your family has a constant supply of pure water.

Automatic Flushing System

Safety and Reliability

NSF, the National Sanitation Foundation, is an independent organization established in 1944 in the U.S. with a mission to protect and improve global human health. All components of A. O. Smith’s water purifiers are tested and certified by NSF International to meet NSF/ANSI standards 58 and 42.