Several air purifier brands like Winix, Blueair, Coway, Honeywell, Shark, and Sharp offer models designed for large homes, prioritizing features such as high CADR, intelligent sensors, filtration longevity, steady performance, low-maintenance filters, and dehumidification. The selection criteria for these purifiers extend beyond coverage numbers to include airflow patterns, noise levels, and filter servicing frequency, emphasizing consistent, reliable performance for maintaining clean air.