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AirPurify

Coway Airmega 250S vs Medify MA-40

Side-by-side comparison based on published product information. Check Amazon for current price and availability.

How we evaluate products

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 We do not present unpublished laboratory or in-home measurements as our own testing.

Features and services can change, so confirm current details with the manufacturer before buying. Affiliate commissions do not determine our editorial criteria.

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.
Coway Airmega 250S

Coway Airmega 250S

Coway

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Medify MA-40

Medify MA-40

Medify

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Feature comparison

FeatureCoway Airmega 250SMedify MA-40
Coverage373 sq ft (4.8 ACH)373 sq ft (4.8 ACH, AHAM Verifide)
CADR249 / 261 / 230 CFM (Smoke / Dust / Pollen)239 / 231 / 240 CFM (Smoke / Dust / Pollen)
Filter typeWashable pre-filter + Max2 combined HEPA and Carbon3-stage pre-filter + H13 True HEPA + activated carbon composite
Noise level22-54 dB40-53 dB (rated); up to 66 dB measured by HouseFresh
Weight20.5 lbs17.5 lbs
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