How many filters does the Friedrich C90B Air Cleaner use?
The energy-efficient Friedrich C90B Air Cleaner uses a washable pre-filter, an Activated Carbon filter, and re-usable collector plates instead of HEPA filters. The plates trap particles like dust, dander, and pollen, while the Activated Carbon filters absorb odors and fumes and can be easily replaced. Instead of multiple filters that need frequent changes, the Friedrich C90B Air Cleaner only uses one carbon filter and a series of Collector plates that can be washed and reused whenever needed.
