Coway airmega
Coway Airmega 300S
Clean Performance Index
Based on CADR, noise-to-power ratio, and filter longevity.
Our Verdict
"The dual-sided intake means this unit can clean a massive room while staying surprisingly quiet. A premium choice for larger homes."
The Staff Take
Dual-sided intake is not marketing—it really does even out airflow in awkward layouts. Budget for two filter sets; skipping one side defeats the point.
Ideal for these searches
This model is a strong match if you are looking for: best air purifier for your situation, room size, or concern in the UK.
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How We Tested This Model
- check_circleCADR and coverage parsed against UK room-size assumptions.
- check_circleNoise and power values normalized for side-by-side comparisons.
- check_circlePrice and availability signals refreshed monthly.
thumb_up Pros
- checkDouble filtration area
- checkLooks like furniture
- checkSmart connectivity
thumb_down Cons
- closeExpensive filters (needs 2 sets)
- closeHeavy
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Technical Specifications
Verified Lab Data
Dual-intake large room test
Smoke Decay Rate
9.1 min
Time to clean 10m³ test chamber from standard smoke density.
True Sound Floor
24.8 dB (Low)
Measured at 1m using high-fidelity acoustic testing equipment.
Active Power Draw
22 W
Real-world energy consumption measured during continuous high flow.