Direct replacement water flow sensor for GSWH 2 tankless water heaters. Designed for seamless compatibility, reliable operation, and easy service. Compatibility: Specifically engineered for GSWH 2 tankless water heaters to integrate with your existing unit with minimal setup. Construction: brass body provides rust resistance and durability in challenging water conditions. Easy installation: Straightforward replacement of the old sensor with no tools or specialized expertise required, reducing downtime. Replacement part: Part number 2022107584 ensures an exact fit and full functionality as a replacement. Performance: Accurate flow sensing supports proper heater protection and consistent water delivery. Use scenarios Routine maintenance: Swap in the sensor to restore precise flow readings and prevent false shutoffs. Water quality events: a fouled or corroded sensor to maintain efficiency when mineral buildup or rust is present. Peakdemand : Quickly restore heater control and reliability after sensor failure during use periods. This sensor delivers functional, compatible, and durable replacement performance for GSWH 2 tankless systems.