The frequency of filter replacement for a stove's fan can vary depending on several factors, such as the type of filter, cooking frequency, and the quality of air circulation in your kitchen. Typically, it is recommended to replace or clean the filter in your stove's fan every 3 to 6 months for optimal performance. However, if you cook frequently or notice reduced airflow and efficiency, it may be necessary to replace the filter more often.
To determine the specific recommendations for your stove's fan filter, I would suggest consulting the manufacturer's guidelines or the user manual that came with your appliance. They usually provide instructions on maintenance and filter replacement intervals specific to your model.