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The Coway Airmega 450 is a large-room HEPA air purifier with a three-stage filter: a vacuumable pre-filter, True HEPA, and activated carbon. It moves a lot of air through its HyperVortex design and runs from a near-silent 23.7 dB in Sleep mode up to 57.7 dB in Turbo. A real-time air quality sensor drives Auto mode, and Eco mode shuts the fan off when the air stays clean. It suits big open living spaces, offices and allergy sufferers who want set-and-forget filtration. Against rivals like the Levoit Core 400S and Winix 5500-2 it covers far more floor space per unit, but it is a tall 29-inch tower and filters are a yearly cost.
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The Coway Airmega 450 is an air purifier for large indoor spaces, including homes and offices. It covers up to 3,285 square feet at one air change per hour. HyperVortex airflow cleans the air quickly.
Air passes through three filter stages: a vacuumable pre-filter, a True HEPA filter and an activated carbon filter. A real-time air quality sensor adjusts the fan speed automatically. The purifier also has Auto, Sleep, Eco and Turbo modes.
The design is minimalist. Noise ranges from 23.7 dB in Sleep mode to 57.7 dB in Turbo mode.
