Medify MA-40 Air Purifier vs Coway Airmega 400(G) Air Purifier

The Coway Airmega 400(G) is the stronger pick for large, open rooms and for anyone who wants the purifier to run itself. It covers roughly 1,560 sq ft at 4 air changes per hour, monitors air quality in real time and adjusts fan speed automatically. The Medify MA-40 is smaller and simpler, with no app and no air quality sensor, but it is easier to move between rooms and its lifetime warranty is a real long-term advantage. Owners of both rate cleaning performance highly; the Coway is quieter at its lowest setting, while the Medify is louder at full blast.

• Choose the Medify MA-40 if you want a lighter, simpler unit you can move from bedroom to office, and you value a lifetime warranty over smart features.
• Choose the Coway Airmega 400(G) if you are cleaning a large open living area and want automatic operation, dual-sided filtration and very quiet low-speed running.