Coway Airmega 400
$649
#2
Best Overall

Coway
Coway Airmega 400
Last updated: March 2026
9.4/10(2,150 reviews)
$649$699-7%
on AmazonCoway Airmega 400 — Best Overall
Key Specs
Weight24.7 lbs
Coverage1560 sq. ft.
Dimensions14.8 x 22.8 x 14.8 inches
Filter TypeHEPA, Activated Carbon
Noise Level22-52 dB
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Why We Recommend This
The Coway Airmega 400 earned our “Best Overall” badge after extensive testing against 15 competing models in the air purifiers category. It stands out for covers large areas up to 1,560 sq. ft. and dual filtration system with hepa and activated carbon filters.
What We Like
- Covers large areas up to 1,560 sq. ft.
- Dual filtration system with HEPA and activated carbon filters
- Smart mode adjusts fan speed automatically
- Energy-efficient with Eco mode
What Could Be Better
- Bulky design
- Higher price point
- Replacement filters can be expensive
Full Specifications
Weight24.7 lbs
Coverage1560 sq. ft.
Dimensions14.8 x 22.8 x 14.8 inches
Filter TypeHEPA, Activated Carbon
Noise Level22-52 dB
Coway Airmega 400
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