India, Nov. 19 -- Indoor air quality affects health, comfort, and daily life. Dust, pollen, smoke, and other particles can trigger allergies, respiratory issues, and fatigue. Increasing pollution in many cities, mostly in metro cities like Delhi and Mumbai, has made air purifiers a common household item rather than a luxury. Choosing the right device, however, requires understanding how it works, the type of filters it uses, and maintenance requirements.

Air purifiers clean indoor air through continuous filtration. They usually include a fan that draws air in, filters that trap particles, and sometimes sensors that adjust airflow based on air quality. Pollutants such as PM2.5, PM10, dust, pollen, pet dander, and some harmful gases get ca...