Home › Air Purifiers › Blueair Blue Pure 211i Max vs Coway Airmega 400S
Blueair Blue Pure 211i Max vs Coway Airmega 400S
Blueair's $300 model meets Coway's $450 model. We tally wins category by category, then call a verdict.
Our recommendation
Specs are roughly tied (3–3). At $300, the Blueair Blue Pure 211i Max is the value pick.
Blueair Blue Pure 211i Max: 3 category wins Coway Airmega 400S: 3 category wins
Side by side
Blueair Blue Pure 211i Max
$300
Coway Airmega 400S
$450
CADR
360 CFMWin
350 CFM
Coverage
60 m²
115 m²Win
Noise (low)
24 dB
22 dBWin
Noise (high)
53 dB
52 dBWin
True HEPA
Yes
Yes
Activated carbon
Yes
Yes
Smart app
Yes
Yes
Voice control
Yes
Yes
Filter cost / yr
70 USDWin
110 USD
Dimensions
33 × 33 × 52 cm
35 × 35 × 57 cm
Weight
5.4 kgWin
11.4 kg
Blueair Blue Pure 211i Max
A high-CADR HEPASilent purifier that clears large rooms fast while staying impressively quiet.
Coway Airmega 400S
A dual-intake powerhouse that covers huge rooms with deep carbon and a slick smart app.
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