Real-time stress testing from AQI 999 to clean air across top brands.
We stress-tested each air purifier by artificially elevating office AQI levels beyond 999 using incense smoke inside sealed rooms ranging from 150 to 500 sq ft. We recorded the exact time required for each unit to bring the AQI down to safe breathable levels under realistic conditions, while evaluating filter life, replacement filter costs, noise levels, and smart app features.
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