As is well known, the airflow of a kitchen exhaust fan during operation often reflects its performance. In severe cases, the fan may fail to meet operational requirements. Furthermore, during repairs, improper methods can exacerbate the problem, which not only increases costs but may also lead to repeated failures. So, if you find that the airflow of a kitchen exhaust fan does not meet operational requirements, how should you best address the issue? In fact, such problems are generally caused by the following reasons: First, the system resistance of the kitchen exhaust fan was not designed according to the rated value and may be higher or lower than the rated value. If the resistance is lower, it may result in higher airflow and pressure. However, if it is higher, it may cause a decrease in airflow and pressure. The second reason is that the fan’s rotational speed was not set to the rated value; the third reason is that the medium density is no longer within the specified range. Additionally, the airflow control device may have unexpectedly shut down during operation, or the unit may have been installed upside down. It could also be that the kitchen exhaust fan itself is damaged, or that a component has failed, resulting in airflow that falls short of requirements. Furthermore, the unit may require cleaning due to prolonged use. In summary, only by ensuring normal airflow can the kitchen exhaust fan equipment realize its true value and function, thereby fully leveraging its benefits. Therefore, if any abnormalities are detected during operation, the equipment must be repaired promptly. At the same time, I would also recommend that, if conditions permit, we should select centrifugal fans with comprehensive configurations, fine craftsmanship, and low failure rates. Furthermore, during daily operations, regular inspections and maintenance should be conducted to reduce the failure rate of the kitchen exhaust fan.