Air purifiers have gained popularity as a solution to combat indoor air pollution. However, before you invest in one, it’s crucial to consider four key factors for maximum effectiveness. Firstly, you should determine your specific air quality needs, as different purifiers cater to different contaminants. Secondly, the size and placement of the purifier in the room can significantly impact its efficiency. Thirdly, check the purifier’s Clean Air Delivery Rate (CADR) to ensure it can handle your room size. Lastly, filter replacement costs and availability should be assessed for long-term maintenance. Making an informed decision will help you breathe cleaner, healthier air indoors.