New Delhi, Oct. 16 -- Delhi's air quality index already sits at 183 and could cross 300 as winter approaches. Pollution levels usually triple during this period, and in 2024, purifier filters clogged within 15 days, leading to Rs.20,000-30,000 in replacements. Without proper upkeep, even indoor air can become just as hazardous.

Air purifiers work best when maintained regularly, especially before and after Diwali, when dust, soot, and smoke peak.

Honeywell purifiers feature a 4-stage H13 HEPA system that removes 99.99% of pollutants and covers rooms up to 388 sq ft. The washable pre-filter should be vacuumed often and replaced every 3 months. The main HEPA lasts about a year. Some models have washable ifD filters. Rinse them quarterly. A...