The Bosch HVAC 7738006263 Sensor Boiler Well is a protective mounting component designed to house and position a compatible boiler temperature sensor. It allows the sensor to accurately detect boiler water temperature while isolating it from direct exposure to the heating fluid, supporting reliable temperature monitoring. This boiler well is used with compatible Bosch boilers and hydr... Bosch Hvac 7738006263 Sensor Boiler Well