Friedrich C-90B Electrostatic Air Cleaner

Product Overview

The award-winning C-90B from Friedrich is an excellent choice for overall air purification. This updated unit features Friedrich’s quality workmanship and improved internal components that deliver greater CADR rates and cover larger areas more effectively. The Friedrich C-90B:

• Safely and effectively cleans your air for a healthier and fresher environment.
• Thoroughly removes tobacco smoke without costly filter replacements.
• Significantly reduces allergy and asthma symptoms.
• Is a cost-effective air purification system with a washable pre-filter and main filter.
• Achieved one of the highest CADR (Clean Air Delivery Rating) in an independent laboratory test.
• Read our detailed review of the Friedrich C-90
• For additional information, see our Frequently Asked Questions about the Friedrich C-90B

Long-Term Value The Friedrich C-90B offers unbeatable value because there are no HEPA filter replacements (which can cost from $80-$100). The electric plates on the unit need a simple wash to keep the air cleaner operating at optimum capacity. Weekly maintenance will ensure the longevity of this high-quality unit. This unit has: A washable pre-filter. No HEPA filters to replace. An energy-efficient fan that doesn't use excessive energy. A quiet fan because it is not overpowered like most traditional fans that have to push air through a thick material filter. Dishwasher safe electric plates. An estimated yearly cost to operate of only $50-$60.

3-Stage Filtration = Outstanding Efficiency
The efficiency of the C-90B comes from the unit’s 3 filter stages. First, air travels in through a prefilter that captures the largest particles. Next, air moves through an electrostatically charged main filter cartridge. Finally, air moves through a carbon filter to eliminates gases and odors. The system:

• Has a 3-speed fan to quickly eliminate odors, dust, pollen, tobacco smoke, and other airborne pollutants.
• Uses inexpensive carbon filters for additional odor filtration.

The Friedrich C-90B uses a 4-step process (pictured below) to filter air particles, odors, and fumes. The filtering process creates fresher, cleaner air to reduce breathing problems for those with allergies or respiratory sensitivity. The filter works as follows:

The prefilter catches the larger particles as air in the room is drawn through the rear grille. In the ioinizing section of the electronic cell, billions of microscopic particles become electrically charged as they pass through a powerful electric field. Collector plates immediately attract these charged particles. Finally, an activated carbon filter removes common odors and fumes as the clean air is circulated back into the room.

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