New Delhi, Jan. 8 -- Most of us buy an air purifier hoping it will quietly fix the problem, but then we're left guessing: is the air any better, or is the fan just running. That's why I went looking for air purifiers with an AQI display and looked at whether that screen seems to react to real life at home, cooking smoke, dusting, open windows, even a busy road outside.

In this story, I'm not chasing fancy claims. I'm looking at how quickly the readings move, how readable they are, and whether the filters and airflow match the room size you live in. I also note noise and filter replacement costs. If you want a purifier that shows proof, not vibes, this list is for you.

Honeywell Air Touch P1 is for homes that want clean air without a lea...