Appliances head-to-head
Blueair Blue Pure 211+vsCoway Airmega 400
Blueair Blue Pure 211+ vs Coway Airmega 400, scored side by side on all 5 Appliances axes. Overall 8.3 to 8.0.
Blueair Blue Pure 211+
Blueair
8.3
Moves a large room's worth of air while staying quiet enough to forget about.
Price and availability change constantly, so we don't quote them here — the link opens the current Amazon listing.
Coway Airmega 400
Coway
8.0
The heaviest-duty unit here, sized for rooms most purifiers quietly cannot handle.
Price and availability change constantly, so we don't quote them here — the link opens the current Amazon listing.
Where they diverge
Two products can average the same and still feel different, because the shape of the scores differs. Left of center is Blueair Blue Pure 211+, right is Coway Airmega 400.
Blueair Blue Pure 211+
Axis
Coway Airmega 400
- 8.4Performance9.0
- 8.2Value7.0
- 7.8Durability8.4
- 8.6Ease of use8.2
- 8.6Quietness7.6
Which one to pick
Take the Blueair Blue Pure 211+
Leads on Value, Ease of use and Quietness.
- An open-plan living space rather than a bedroom-sized box
- You want one control and no app
- The washable fabric sleeve catching pet hair appeals to you
Take the Coway Airmega 400
Leads on Performance and Durability.
- A room large enough that smaller units cycle constantly
- You want a particulate number rather than a coloured light
- Dual-sided intake suits where the unit has to sit
What each one gets wrong
Blueair Blue Pure 211+
- You want a display showing particulate readings
- Carbon filtration for cooking smells is a priority
Coway Airmega 400
- Proprietary filters that cost real money every six months
- Floor space is tight — the footprint is substantial
Specs, side by side
| Spec | Blueair Blue Pure 211+ | Coway Airmega 400 |
|---|---|---|
| Coverage | Large rooms | Very large rooms |
| Filter | Fabric pre-filter plus particle filter | Dual intake, HEPA plus carbon |
| Controls | One button, three speeds | — |
| Sensor | — | Real-time particulate readout |
Rankings they both appear in
Questions
- Blueair Blue Pure 211+ or Coway Airmega 400 — which should I buy?
- Blueair Blue Pure 211+ leads on Value, Ease of use and Quietness. If Performance and Durability matter more to you, take the Coway Airmega 400 instead.
- How far apart are they overall?
- Blueair Blue Pure 211+ scores 8.3 and Coway Airmega 400 scores 8.0, a gap of 0.3. The total is the plain average of the 5 axes used in Appliances.