An air purifier that can adjust fan speeds based on the room’s air quality. It is energy efficient without compromising efficacy. Coway Airmega helps you track a room’s air quality over time, so you can find out when air quality is at its best and worst. Outdoor air pollution can affect indoor air. Consult outdoor air-pollution levels for cities in your area to know when the Coway Airmega is needed most. Can save energy when you’re not at home. It sets fan speed and access smart mode controls remotely when you’re connected to Wi-Fi.