The Rheem AP18087 Thermistor is a vital component for accurate temperature sensing in tankless water heaters. This thermistor is designed to provide precise readings, ensuring optimal performance and efficiency. Made from high-quality materials, it is built to withstand the demands of regular use. Compatible with various Rheem models, the thermistor is easy to install and helps maintain consistent water temperatures. By ensuring accurate temperature control, this component plays a crucial role in enhancing the overall efficiency of your water heating system.