The duration for which you can run a kitchen exhaust fan depends on various factors, including the specific model of the fan, its motor, and the manufacturer's recommendations. However, in general, kitchen exhaust fans are designed to be used for extended periods of time, especially during cooking activities.
Many residential kitchen exhaust fans are built to handle continuous operation. They are typically equipped with durable motors and designed to handle the demands of continuous airflow for extended periods without any issues. These fans are often controlled by a switch or a timer, allowing you to adjust the duration of operation based on your needs.
It's important to consult the user manual or specifications provided by the manufacturer of your specific exhaust fan to determine the recommended duration for continuous operation. This information can vary depending on the fan's design and intended usage. If you no longer have access to the manual, you can try searching for the make and model of your exhaust fan online to find the manufacturer's recommendations.
In summary, kitchen exhaust fans are typically designed to be used for extended periods, and many can handle continuous operation. However, it is advisable to refer to the manufacturer's instructions or specifications for your specific fan to ensure you are using it within its recommended operational limits.