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The rise of smart air purifiers has shifted the focus to technology. These internet-connected gadgets can track air quality in real time, allowing users to change settings or receive notifications on their cellphones. Furthermore, features such as automatic operation based on air quality measurements or connectivity with smart home systems improve convenience and user experience. Stringent regulations, including the Clean Air Act (42 U.S.C. §7401 et seq. (1970), National Ambient Air Quality Standards (NAAQS), Directive 2008/50/EC, EN 1822-1:2019, ISO 16890-2:2016, and air filters for general ventilation, have mandated the use of air purifiers.
Furthermore, the UK is aggressively establishing government rules and measures to protect indoor air quality. For example, in April 2023, the Department for Environment, Food, and Rural Affairs (Defra) published the Air Quality Strategy, which defines the steps that local authorities in the UK would take to meet long-term air quality objectives. The aims are to reduce PM2.5 levels to 10 µg/m³ by 2040 and improve interior air quality by sharing ventilation recommendations and best practices. Air purifiers with built-in air quality sensors are also gaining traction. These sensors provide real-time data on pollutants like PM2.5, VOCs, and allergens, allowing users to track air quality changes and understand the effectiveness of their air purifier.