The frequency of filter replacement in your air purifier depends on various factors such as usage, air quality, and the specific model of the purifier. As a general guideline, it is recommended to replace the filters every 6 to 12 months for optimal performance.
However, it is important to note that this can vary based on individual circumstances. If you have pets, smoke, or live in an area with high levels of pollutants, you may need to replace the filters more frequently.