This article reviews air purifiers suitable for large rooms, focusing on models with significant coverage, HEPA and carbon filtration, and features like PM readings and auto modes. It highlights the Coway Airmega 250 for its long filter life and effective purification, and the Honeywell Air Touch P2 for its real-time PM2.5 display and app control. Both models are praised for improving air quality and reducing filter replacement frequency, though filter costs and availability are noted as potential drawbacks.