Particle counts measured in a sealed 40 m² room.
By Marcus Okafor, Appliances & Cleaning Editor · Published August 8, 2026 · 2 min read
Photograph: Jay Mantri / StockSnap
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We measured PM2.5 decay curves in a sealed room after a controlled particulate release.
Rated CADR is measured at maximum fan speed, which most people never use. We test at the highest setting testers tolerated overnight.
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