Product Detail Incorporates H12/13 class certified HEPA filter, normally used in multi-million dollar clean rooms. IQAir systems have been found to remove particles down to 0.01 microns with close to 99% efficiency. V5-Cell gas phase filter for the control of a wide range of gaseous contaminants and odors. 1,000 sq. ft. coverage area (based on maximum fan speed and an 8.5 ft ceiling). . The "IQAir HealthPro Plus Air Purifier - HEPA Air Cleaner with Gas and Odor Filter" is best product for you. We recommended IQAir HealthPro Plus Air Purifier - HEPA Air Cleaner with Gas and Odor Filter