Friedrich C-90A Electrostatic Air Purifier

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The Friedrich C-90A Electronic Air Cleaner was recently rated best in the Nationís largest independent consumer review magazine. That said, it is extremely effective against airborne allergens like tobacco smoke, pollen, aerosols, dust, pet dander.
This air purifier uses electronic precipitation to provide allergy relief for family members, customers, and employees.
The pre-filter in the C-90A effectively purifies harmful particles, odors, and fumes and the electrostatic collector plates capture much smaller particulates. This air purifier can clean a room as large as 600 sq. ft. but we recommend using it in rooms smaller than 450 sq. ft. for optimum purifying power.
The Friedrich C-90A is our most energy efficient air purifier and furthermore it does not require expensive filter replacements, only the carbon filter needs to be replaced occasionally.
Keep Wood stoves, dust, pesticides, humidifiers and other particle-producing sources in check without worrying about expensive filter replacements with the Friedrich C-90A electrostatic precipitator.
The C-90A received on of the highest Clean Air Delivery Ratings (CADR) in independent laboratory tests. And perhaps, most importantly, the C-90A is one of the least expensive air purifiers to operate. Unlike many more expensive HEPA air purifiers which can cost $100ís of dollars per year to operate, the filter in the C-90A is reusable and can be cleaned in the dishwasher.
The Friedrich Air Conditioner Company is over 100 years old and is the leading producer of window mounted air conditioner units in the United States.
How does the Friedrich C-90A electrostatic air Purifier work?
This air purifier uses electrostatic and carbon filters instead of HEPA cloth but it still has received high Clean Air Delivery Rates (CADR) from independent AHAM (Association of Home Appliance Manufacturers) laboratory tests. The unit has an indicator light function that signals the air purifier is working properly, and a safety interlock switch that shuts the air purifier off when the access cover is removed.
1. 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 and collect these "charged" particles.
4. Finally, an activated CARBON FILTER removes most common odors and fumes as air is circulated back into the room.
How to maintain Friedrich Electrostatic Air Purifiers
In order to keep the C-90A air purifier operating at peak efficiency, it is important to wash the electronic cell. The electronic cell can either be submerged in a bathtub or other suitable container and rinsed, or it can be washed in an automatic dishwasher. The C-90A air purifier comes with one carbon filter.
The C-90A is very easy to maintain. Changing the filters is easy; simply slide new ones in a slot. There is no expense of replacing prefilters and HEPA filters. When the C-90Aís electrostatic collector plates become clogged, simply wash them in the dishwasher. The pre-filter can also be vacuumed or washed in an all- purpose washing fluid and water. This is a very quiet machine, even on high the high setting. If the air is of very poor quality, the efficiency of the electrostatic cell will degrade rapidly, and may necessitate weekly cleaning.
When the electrostatic plates need cleaning, the C-90A will sound much like a bug zapper. Because this machine uses electrostatic precipitation, the C-90A will emit a very small amount of ozone. This filter has a minimal carbon filter and thusly is not the best choice for heavy odor or VOC removal. In summary, the Friedrich C-90A is ultra quiet, inexpensive to maintain and easy to operate. This machine does a particularly good job removing smoke odors.
One carbon filter included with purchase.
Friedrich C-90A Electrostatic Air Purifier:
I purchased the Fredrich C-90 Air Purifier when I moved in with my roommate who happens to be a smoker. Even though she smokes on the front porch, I still felt like some of the smoke was reaching the inside of the house. I was looking for a solution that did not involve expensive HEPA or Carbon filter changes, so the Fredrich was the perfect solution. I could tell a huge difference in the air within the first hour of operation and it is so easy to maintain. The Fredrich contains a pre-filter, which captures larger particles, electrostatic collector plates, which captures smaller particles, and a carbon filter which helps to remove odors and also absorbs any ozone created by the electrostatic precipitator.
What I like about the Friedrich C-90A Electrostatic Air Purifier:
  • Easy to use and clean (The Electrostatic collector plates can be placed in the dishwasher and the pre-filter can be washed off or vacuumed off)
  • No expensive filters to replace (carbon filter must be replaced every 3 months for $27.99)
  • Comes with a one year warranty
    What I didn't like about the Friedrich C-90A Electrostatic Air Purifier:
  • Loud on the highest setting
  • Not very nice to look at
  • Doesnít have castors
    In summary, I give the Fredrich 3 out of 5 stars. I think that the Fredrich is loud compared to a lot of the other air purifiers on the market today. I would recommend this product to anyone who is looking to remove smoke, dust, pollen, or pet dander from the air. The main benefit to the Fredrich is the low maintenance costs.

    Believe me, I'm a smoker August 11, 2003
    Reviewed by: Smoker from Florida
    The Friedrich C-90A is the number one, best air purifier. After smoking two or three cigarettes I know a couple of hours later my home won't smell at all!
    Outperforms Other Machines May 2, 2003
    Reviewed by: Sensitive to Dust Sufferer from Kailua-Kona, Hawaii
    After purchasing other air purifiers, including the Sharper Image's Ionic Breeze, I found the Friedrich C-90 to outperform all of them immediately. I noticed the bedroom to be virtually odor free and my family slept much better. I discovered this product after reading the Consumer Reports review which gave it its highest rating.
    Many Good Qualities January 23, 2003
    Reviewed by: David Lee from SAN ANTONIO, TEXAS
    I have used many air filters and the Friedrich C-90 electrostatic air purifier is the easiest to clean, quietest, and most effective that I have ever used! The only downside is the size. It is large, but with the easy built "handles" on the side it is easy to move from place to place.
    Product Features
    Recommended For:
    Bedrooms, offices, nurseries N/A --
    User Profile:
    Allergy and asthma sufferers who want minimal filter replacement costs. Smokers, etc. N/A --
    Allergy, Asthma Range:
    450 sq. ft. N/A --
    Maximum Room Size:
    600 sq. ft. N/A --
    Filter Description:
    Electrostatic filter
    Collector Plates
    Carbon Filter N/A --
    Yes N/A --
    Filter Guarantee:
    1 year N/A --
    HEPA Filter:
    No N/A --
    Carbon Filter:
    Yes N/A --
    UV Light:
    No N/A --
    Air Intake:
    Back of unit N/A --
    Air Outflow:
    Front of Unit N/A --
    Ozone Emission:
    Minimal N/A --
    Filter Change Indicator Sensors:
    No N/A --
    No N/A --
    Smoke Removal:
    Yes N/A --
    Mold Removal:
    Yes N/A --
    Odor Control:
    Yes N/A --
    Dust Removal:
    Yes N/A --
    Formaldehyde Removal:
    No N/A --
    Second Hand Smoke Removal:
    Yes N/A --
    Ease of Filter Replacement:
    Easy, slips in and out N/A --
    Installation / Expansion Options:
    No N/A --
    Power Cord Length / Type:
    5 feet, polarized, three prong plug N/A --
    Interface Control Type:
    4 push buttons on
    top of unit N/A --
    Color Options:
    Off white, textured N/A --
    19" W x 15" H x 21.5" D N/A --
    28 lbs (12.7 kg) N/A --
    Shipping Weight:
    33 lbs (15 kg) N/A --
    ABS Plastic N/A --
    Wheels / Casters:
    No N/A --
    Fan Speeds:
    3 N/A --
    CFM of Fan Speeds:
    Low 225 cfm
    Med 275 cfm
    High 365 cfm N/A --
    1 year N/A --
    LCD Display:
    No N/A --
    Programmable Timer:
    No N/A --
    Remote Control Included:
    No N/A --
    CADR Ratings from AHAM:
    Dust 325
    Smoke 300
    Pollen 370 N/A --
    UL, CADR N/A --
    30 Day Risk Free Money
    Back Guarantee:
    Yes N/A --
    Free Shipping Included:
    Yes N/A --
    Quiet, Minimal filter replacement cost N/A --
    Wish it had casters N/A --