How Often to Change HEPA Filter in Air Purifier: A Practical Schedule
A HEPA filter in an air purifier typically needs replacement every 6-12 months in ordinary residential use. Replace it closer to 3-6 months when the purifier runs continuously, the home has pets or smokers, or outdoor pollution is high; light, occasional use may extend service toward 12-18 months if airflow remains strong. Key Facts at […]