Description
The Lennox 33J20 Air Flow Switch is a safety device in many of the Lennox HVAC products like furnaces, and air handlers among others. It manages the airflow within the device which isessential in the safety of the system. This way, through the regulation of the airflow the switch helps maintain the safe and efficient operation of the device. When the airflow is below a certain level, the 33J20 Air Flow Switch triggers a safety shut-off. This fast shut-off is useful to prevent the furnace or air handler from overheating and damaging the equipment and thus a failure.
