An independent monitoring system and method for measuring the airflow rate in an appliance and determining its sufficiency is provided. An airflow detection system that monitors airflow rate (velocity) in an appliance is separate from the primary appliance control system and can determine whether a sufficient flow of air through air passageways occurs during operation of the appliance. An appliance component or subsystem can be controlled (e.g. activated or deactivated) by the airflow monitoring system based on the detected airflow rate.