Coway Airmega 400S Air Purifier

The Airmega 400S is designed to cover spaces up to 1,560 square feet. It is well-suited for large living areas, open-concept floor plans, or master suites.

It handles both. The unit uses a two-stage filtration system that includes an activated carbon filter specifically designed to trap and neutralize household odors, smoke, and volatile organic compounds alongside a HEPA filter for particles.

Yes. Because it features Wi-Fi connectivity, you can monitor air quality trends and adjust fan speeds or settings remotely using the Coway smartphone app. It is also compatible with Alexa for voice control.

The unit features an intuitive indicator light on the front that changes color based on the real-time air quality it detects. You can also view detailed air quality reports directly within the mobile app.

The automatic mode is highly responsive and generally recommended. It uses the onboard sensors to detect pollution levels and adjusts the fan speed accordingly, which helps conserve energy while ensuring your air remains clean.

You will need to periodically clean the pre-filter to maintain airflow and replace the HEPA and activated carbon filters based on usage. The app typically provides notifications when it is time to check or replace these components.