Air Filtration

Coway Airmega 400

Name: Coway Airmega 400
Brand: Coway

Coway

Where to Buy

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Coway$595 Check price on Amazon

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Lowest recorded price

$595

coway

Our Take

Airmega 400 is the value pick in the large-room HEPA category, covers 1560 sq ft (double the IQAir HealthPro's coverage) at less than half the price. Two-stage HEPA + activated carbon, real-time air quality sensor with color-coded display, auto mode that ramps fan speed to current particulate count. Trade-off vs IQAir: standard HEPA (0.3 micron) not HyperHEPA (0.003 micron), so it misses the very finest particulates.

Pros

1560 sq ft coverage, twice IQAir HealthPro's range
Half the IQAir HealthPro price
Real-time air quality LED indicator + auto mode
Filter swaps are user-doable (no service call)

Cons

Standard HEPA, not HyperHEPA, misses ultrafine particulates that matter for smoke/viruses
Loud at high fan speeds in high-pollution environments

Evidence and regulatory context

Potential benefits depend on the studied population, protocol and exact product. A result for one device or ingredient does not establish the same effect for every consumer product. Our comparisons do not establish a diagnosis or an individual treatment plan.

FDA establishment registration, device listing and a device class do not establish approval or clearance of this exact model or every advertised benefit. When clearance is relevant, check the model and the specific intended use. FDA explanation.