New Delhi, Jan. 11 -- Air purifiers under 30K can look similar at first glance, but the differences become obvious once you compare how each brand approaches filtration, coverage and long-term upkeep. Honeywell's P1 and P2 models, for example, focus heavily on faster purification cycles and clearer PM2.5 readouts, while Philips' AC1711 leans on its ability to trap ultra-fine PM0.003 particles - reassuring on days when indoor air quality swings unexpectedly. Coway's AirMega AIM stands out for its unusually long 8,500-hour filter life, which changes how often you'll need replacements and how much you'll end up spending annually. AROEVE's MK07 brings wide-area coverage and millisecond-level air detection, something useful in open spaces or h...