Compatibility: Designed specifically for GSWH 2 tankless water heaters to ensure plug-and-play integration with your existing system. Function: Precision water flow sensor that monitors flow rates so the heater can regulate ignition and temperature accurately. Exact replacement: Part number 2022107584 provides a direct, drop-in replacement for the original factory sensor for reliable fit and function. Durable brass construction: Machined from premium brass to resist rust and corrosion, maintaining consistent performance in harsh water conditions. Fast, simple installation: Replaces the old sensor quickly without special tools or professional skills, minimizing downtime and service disruption. Practical benefit: Restores accurate flow sensing to prevent operational errors and help the unit run as intended. Typical applications and scenarios Repair: Replace a failed or degraded flow sensor on a GSWH 2 unit that is showing flow-related error codes or inconsistent hot water delivery. Routine maintenance: Install during scheduled service to ensure accurate flow readings and reliable heater control over time. Service readiness: Keep as a spare part in a technician’s kit for fast on-site replacement during service calls. What you get A direct-fit, OEM-style flow sensor (part number 2022107584) made of brass, engineered for GSWH 2 tankless water heaters to deliver reliable, corrosion-resistant flow measurement and simplified installation.