Blueair Replacement Air Cleaner HEPA Filters
Blueair polypropylene filters feature an exclusive HEPASilent technology, which allows them to capture 99.97% of particles as small as 0.1 micron - including dust, pollen, mold spores, and bacteria. They top the performance of regular HEPA filters (which are only capable of trapping particles down to 0.3 micron), while maintaining a high airflow rate.
Blueair 402 and 500/600 series are available in Smokestop version, with activated carbon to help filter out unpleasant odors and gaseous pollutants. This would greatly benefit people with sensitivities to airborne chemicals.
For best performance, all Blueair filters should be replaced every six months.