Coway Airmega 400
#9 in Air Purifier · Rated 4.6
Large-space purifier with HyperCaptive filtration for up to 3,120 sq ft.
Coway Airmega 400 is a high-capacity air purifier designed for large rooms and open-plan spaces. It combines a Max2 filter (activated carbon + True HEPA) to capture particles and odors with real-time air-quality monitoring and two smart modes. The unit sits in a premium category due to its robust build, substantial CADR, and large footprint, but it remains attractive for users needing to purify large living or working areas. The Airmega 400 is widely distributed through Coway’s global channels and is promoted as a solution for big rooms with steady performance. Source: Coway official Airmega 400 page; major retailer listings. ([cowaymega.com](https://cowaymega.com/products/airmega-400?utm_source=openai))
Features
- Up to 3,120 sq ft room coverage
- HyperCaptive filtration (Max2): activated carbon + True HEPA
- Real-time air quality monitoring
- Three smart modes and quiet operation
- Energy-efficient design with long filter life
Pros
- High CADR for large spaces
- Strong filtration and odor control
- Real-time AQI indicators
Cons
- Large footprint; not ideal for small rooms
- Higher upfront cost