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It is also possible that our coding scheme did not capture all components that might appeal to certain demographics, e.g

Safety Protections

good performance for medium rooms Washable pre-filter keeps ongoing filter costs lower Cons: Bearings can develop fan noise after 23+ years (documented issue) ~200g carbon saturates quickly under heavy daily smoke loads PlasmaWave ionizer can produce trace ozone disable it per EPA guidance on ozone-producing devices Best for: Budget-conscious buyers dealing with light or intermittent cigarette smoke

Then the air quality was at zero percent on the screen for 15 minutes, the smoke didnt visually clear, and it seemed as if it wasnt actually purifying