Friedrich C-90B Electrostatic Air Cleaner
Customer Reviews:
Read reviews: (7) / Write a review
Item#: fr491
Availability: In Stock
Shipping: FREE Shipping
Usually leaves warehouse in 24 hours
Price: $599.00
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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
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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:
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The C-90B also offers mproved performance over the discontinued Friedrich C-90A model:
| C-90B vs. C-90A | ||
| Square Footage Served: | 506 | 465 |
| CADR - Pollen: | 421 | 370 |
| CADR - Tobacco Smoke: | 326 | 300 |
| CADR - Dust: | 384 | 375 |
| CADR (Clean Air Delivery Rate) is determined by the Association of Home Appliance Manufacturers (AHAM). | ||
Product Specifications
- HEPA Filter : No
- Electrostatic Filter : Yes
- Other Particle Filter : Yes
- Carbon Filter : Yes
- Washable Filter : Yes: Electrostatic Plates
- Number of Filters to Change : 2
- Average Frequency of Filter Changes : Carbon Filter: 6 months; Electrostatic Plates need regular cleaning
- Max Room Size (sq ft) : 506 sq ft
- Dimensions (WxDxH) : 19" H x 15" W x 21.5" D
- Weight : 28 lbs
- Casters : No
- Number of Fan Speeds : 3
- Amount of Air Moved (Max CFM) : Speed 1: 220 CFM; Speed 2: 280 CFM; Speed 3: 390 CFM
- Clean Air Delivery Rate (CADR) : Dust: 384; Smoke: 326; Pollen: 421
- Remote Control : No
- Filter Change Indicator : No
Reference Materials
Friedrich C-90B Operating Guide
(Adobe PDF)
Operating guide for unit
Friedrich C-90B Sales Brochure
(Adobe PDF)
Sales brochure with detailed information about this unit
Customer Reviews
Average User Rating:
(7 customer reviews) -
Write a Product Review

Highly Recommend Friedrich C90B
Reviewed by: Robert on 2008-11-08
I purchased my Friedrich C90B on-line about two month ago and the unit arrived quickly. My wife has Asthma and I suffer from allergies. The unit has impressed me with it's ability to clean the air in our bedroom. I have been amazed at the amount of dust the unit has removed from what I considered to be a clean room.
Before I make a major purchase I check with Consumer Reports. The Friedrich was ranked #1. So with free shipping and a #1 rating with Consumer Reports the choice was easy. I am very pleased with the unit and plan to buy another in the near future. I highly recommend the Friedrich C90B to anyone who wants very clean air.
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Item#: fr491
Availability: In Stock
Shipping: FREE Shipping
Usually leaves warehouse in 24 hours
Price: $599.00












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