Coway Airmega 400S vs Medify MA-40
Side-by-side comparison based on published product information. Check Amazon for current price and availability.
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We compare published manufacturer specifications, manuals, support policies, and relevant public guidance. We do not present unpublished laboratory or in-home measurements as our own testing.
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Use the feature table below to match published specifications to your room, filtration, and noise requirements. We do not assign an overall score without retained independent test evidence.

Medify MA-40
Medify
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Feature comparison
| Feature | Coway Airmega 400S | Medify MA-40 |
|---|---|---|
| Coverage | 492 sq ft (4.8 ACH) | 373 sq ft (4.8 ACH, AHAM Verifide) |
| CADR | 328 / 328 / 400 CFM (Smoke / Dust / Pollen) | 239 / 231 / 240 CFM (Smoke / Dust / Pollen) |
| Filter type | Dual washable pre-filter + Max2 filter set (activated carbon + True HEPA) | 3-stage pre-filter + H13 True HEPA + activated carbon composite |
| Noise level | 22-52 dB (rated) | 40-53 dB (rated); up to 66 dB measured by HouseFresh |
| Weight | 24.7 lbs | 17.5 lbs |
