Coway Airmega 400S
$649
#4
Large homes with pets
Coway
Coway Airmega 400S
Last updated: March 2026
9.4/10(3,200 reviews)
$649$749-13%
on AmazonCoway Airmega 400S — Large homes with pets
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Key Specs
Weight24.7 lbs
Dimensions14.8 x 22.8 x 14.8 inches
Filter TypeTrue HEPA and activated carbon
Noise Level22 - 52 dB
Coverage Area1560 sq. ft.
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Why We Recommend This
The Coway Airmega 400S earned our “Large homes with pets” badge after research against 26 competing models in the air purifiers category. It stands out for covers large areas up to 1560 sq. ft. and smart mode adjusts fan speed automatically.
What We Like
- Covers large areas up to 1560 sq. ft.
- Smart mode adjusts fan speed automatically
- Real-time air quality monitoring
- Compatible with Alexa
What Could Be Better
- High initial cost
- Large footprint
- Filters are expensive to replace
Full Specifications
Weight24.7 lbs
Dimensions14.8 x 22.8 x 14.8 inches
Filter TypeTrue HEPA and activated carbon
Noise Level22 - 52 dB
Coverage Area1560 sq. ft.
Coway Airmega 400S
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Frequently Asked Questions
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