What is the average lifespan of an air purifier filter?

The average lifespan of an air purifier filter varies depending on factors such as the type and quality of the filter, usage frequency, and air pollution levels. Generally, most HEPA filters, which are commonly used in air purifiers, last for about 6-12 months. However, this estimate can vary based on the manufacturer's recommendations and maintenance practices. Regularly changing or cleaning the filter, as instructed by the manufacturer, can help prolong its lifespan. Additionally, using filters with activated carbon or pre-filters can extend the overall lifespan by capturing larger particles and reducing the workload on the main filter. It is important to monitor the air purifier's indicators or airflow performance to determine when a filter replacement is necessary for optimal air purification.