Overview
- A Hindustan Times explainer details how purifiers work using a fan, filters and sometimes sensors to lower PM2.5, PM10, dust, pollen and some gases over repeated cycles.
- True HEPA filters are highlighted for fine particle capture, activated carbon is recommended for gases and odours, and ionisers or plasma systems may generate ozone; UV‑C does not replace particulate filtration.
- Clean Air Delivery Rate (CADR) is presented as the key sizing metric for room coverage, with advice to check filter costs and availability, energy use, noise and airflow design; smart features are optional.
- The report cautions that purifiers reduce particulate levels but do not fully protect against viruses or infections, encouraging realistic expectations for health benefits.
- A Free Press Journal roundup lists manufacturer-stated specs for current models, including Philips AC0920 (250 m³/h CADR for 20 m²), Honeywell Air Touch V5 (up to 589 sq ft), Eureka Forbes 150 (150 m³/h CADR for up to 200 sq ft) and Ugaoo Mini Lite marketed for 80 sq ft.