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How does C-90A work?

Compare the costs • Compare to ionizers • Compare to HEPA filters • Allergies or Asthma? • How does C-90A work? • C-90A FAQ • Benefits of the C-90A


Replacement carbon filters for Friedrich C90A, C90B, C90, C95


The Friedrich C-90B
is no longer manufactured.
See P600XL
for superior substitute.

Begin Here - About Us
Compare the costs
Compare to ionizers
Compare to HEPA filters
Allergies or Asthma?
How does C-90B work?
Frequent Questions
Benefits of the C-90B
C-90B Brochure
More Information


How the C-90B Works

The Friedrich C-90A1. The PRE-FILTER catches the larger particles as room air is drawn through the rear grille.

2. In the IONIZING SECTION of the ELECTRONIC CELL, billions of microscopic particles become electrically charged as they pass through a powerful electric field.

3. COLLECTOR PLATES immediately attract these "charged" particles.

4. Finally, an activated CARBON FILTER removes most common odors and fumes as the "clean air" is circulated back into the room.

By using a four-step process to filter the air of particles, odors and fumes, the Friedrich C-90B provides you with fresh, clean air to breathe and reduces breathing problems for those with allergies and respiratory sensitivity.

More Frequently Asked Questions


Worldwide Supplier of Air Purifiers, Air Cleaners, Air Filters, Dust Collectors, & Mist Collectors shipping from North America. 
Many, but not all models are displayed.  Air Purifiers are available with a variety of electrical options to meet the power standards of most countries.

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