Seamless compatibility Designed exclusively for GSWH 2 tankless water heaters, this water flow sensor integrates smoothly with your system to maintain optimal performance. Durable material Premium brass construction resists rust and wear, delivering dependable service even in tough water conditions. Easy replacement Straightforward, tool-free installation lets you quickly replace old sensors and reduce downtime. Exact replacement number Part number 2022107584 confirms you are getting the precise replacement needed for efficient operation of your tankless heater. Use scenarios - During routine maintenance to replace a failing flow sensor in a GSWH 2 system to restore accurate flow measurement. - In homes with hard or mineral-heavy water conditions, the brass sensor offers longer life and resistance to corrosion. - On service calls to quickly swap a worn sensor, minimizing hot-water downtime and keeping the GSWH 2 operating at peak efficiency.