New Delhi, Dec. 21 -- GRAP-IV curbs are back across Delhi-NCR this week, with stricter limits that can affect daily routines, including construction activity and commuting. If you are buying an air purifier right now, the tricky part is not the brand name. It is choosing the right capacity for your room size, how long you will run it each day, and what filter replacements will cost over a year.

In this list, we are keeping it practical with picks across budgets, plus quick checks on coverage, night noise, filter type, and what "smart" features are actually useful. We will also share simple placement and usage tips so the purifier works as intended, not just on paper.

Coway Airmega AIM AP 0623B targets small to mid spaces, cleaning up to...