The Ambient Thermistor in blue from Rheem MFG Company is a critical component for temperature sensing in HVAC systems. This thermistor is designed to provide accurate temperature readings, ensuring optimal performance of heating and cooling systems. Its compact design allows for easy installation in various applications. The thermistor is built to withstand a range of environmental conditions, making it suitable for both indoor and outdoor use. With its reliable performance, this ambient thermistor helps maintain energy efficiency and comfort in residential and commercial settings.