Purpose and benefits: precise flow sensing to optimize NR tankless water heater performance, helping maintain consistent hot water and enhance efficiency. Why you need it: a worn or inaccurate flow sensor can cause temperature swings, fault codes, and energy waste. Replacing it restores reliable operation. What it offers: durable, corrosionresistant sensor with a compact design that fits NR models and existing housings. Key features: accurate flow measurement, fast response, and dependable readings for stable operation and prolonged system life. Compatibility: specifically designed for NR tankless water heaters; intended as a direct replacement for worn sensors in these models. Installation: built for straightforward replacement by technicians or experienced DIY installers using standard fittings. Use scenarios: Routine maintenance on an aging NR unit to restore temperature stability and efficiency. Service call to resolve cold water moments or fault codes caused by sensor issues. installation or retrofit to ensure consistent flow and performance in a demand home.