Honeywell 50250 is the Best Large Room Air Purifier. I personally use it and really happy about that.
The 50250-S is very powerful and I rated it the best large room air purifier. The operation of this unit is by true HEPA filtration, which makes it able to eliminate almost all airborne contaminants.
50250-S is optimized to eliminate even the tiniest particle in the air, and it has an efficient airflow mechanism. You can, therefore, enjoy clean, fresh air at all times. Here it is, wisepick.org/best-air-purifier-for-smoke