Product Detail Incorporates H12/13 class certified HEPA filter, normally used in multi-million dollar cleanrooms. IQAir systems have been found to remove particles down to 0.01 microns with close to 99% efficiency. Digital Controls : Integrated timer, remote control, filter life indicator, and 6 fan speeds. 1100 sq ft coverage area (based on maximum fan speed and an 8.5 ft ceiling). . The "IQAir HealthPro Air Purifier - HEPA Air Cleaner" is best product for you. We recommended IQAir HealthPro Air Purifier - HEPA Air Cleaner