| | |  | Allergy, Sinus & Asthma | Home » » » » Friedrich C90A Electronic Air Cleaner | | | | | | | Description: | | A properly functioning filter provides relief for allergy and asthma suffering family members, customers and employees and will ultimately reduce your cleaning and maintenance costs. Replacement pre-filter for large particle filtration. This filter is cleanable so it should only need replacing if it becomes lost, worn, or broken. How to maintain Friedrich Electrostatic Air Purifiers:In order to keep the C-90 air purifier operating at peak efficiency, it is important to wash the electronic cell. When the electrostatic plates need cleaning, the C-90B will sound much like a bug zapper. 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. If the air is of very poor quality, the efficiency of the electrostatic cell will degrade rapidly, and may necessitate weekly cleaning. CLEANING - IMPORTANT PRECAUTIONS: Turn off air cleaner before opening top cover to remove electronic cell and pre-filter for cleaning. Always be careful when handling the electronic cell. Sharp edges and wires are capable of infl icting wounds. Care should also be taken when cleaning because of extremely hot water and potentially harmful effects of detergents on your skin. The collector plates of the electronic cell and the pre-fillter can become extremely dirty. With an excessive amount of contamination buildup on the collector plates and the pre-filter, the electronic air filters effi ciency decreases. Also, as dirt builds up on the ionizing wires, the charge process becomes less efficient. To prevent this loss of efficiency, the electronic cell and pre-filter must be cleaned regularly. How often will depend on actual usage. Cleaning will be more frequent if the air cleaner is operated continuously or under severe conditions. CLEANING THE PRE-FILTER Remove the pre-filter and shake out or brush off the accumulated dust and lint. If this is not adequate, a vacuum may be used or ... | | | Features: | |
• Effectively covers a room up to 506 square feet.
• Excellent for allergy and asthma sufferers.
• Using electrostatic plates this unit cleans your air without costly filter replacements.
• Excellent at pollen, dust, pet dander, mold spore, smoke, and odor removal.
• Award-winning.
| | | Product Details: | | | Product Weight:
| 33.0 pounds | | Average Customer Rating:
|  based on 12 reviews |
| | | | Customer Reviews: | |
Average Customer Review:
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 Needs lots of maintenance- Plus get Facts on OzoneApr 29, 2008
Devices generating high levels of ozone, some of which use ionization, are used to sanitize and deodorize uninhabited buildings, rooms, ductwork, woodsheds, and boats and other vehicles. According to the FDA, it is "amending the food additive regulations to provide for the safe use of ozone in gaseous and aqueous phases as an antimicrobial agent on food, including meat and poultry." Ozone can be used to remove pesticide residues from fruits and vegetables.
If you are afraid of health effects of inhaling ozone, Run the air purifier when you are not in the room or area- It will dissappate quickly when you shut the unit off.
0 of 1 found the following review helpful:
 Good for 1 yearApr 18, 2008
Hi,
My C90A was great for about 1 year. Now it sparks or arcs constantly with a very loud snapping sound when ever I run it. I am not sure how to clean it to get this to stop and Freidrichs was no help at all. I would have done a lot better buying a HEAP air cleaner.
1 of 1 found the following review helpful:
Couldn't hope for better performanceAug 12, 2007
We bought this review based primarily upon the Consumer Reports review. We've had no problems at all with the unit and we're very happy with this purchase.
We have 3 cats and several friends allergic to cats. We also had the odor associated with a litter box for 3 cats... This thing has done a fantastic job of cleaning the air - removing odor and dander so well that our friends can actually spend time in our house. The pre-filter is easy to clean - I usually use the vacuum on it regularly. One reviewer complained about the costs to own this - which are lower than most other brands, incidentally. Their complaint included the $20 filter (~ 3 months depending upon usage). Well... buy them in bulk from the company to save a bit, but keep in mind that $20 is much cheaper than most brands.
1 of 1 found the following review helpful:
 1st one defective, replacement also defectiveJun 02, 2007
I cannot understand how the Friedrich C-90 can be so highly rated. Consumer Reports ranks it number one.
The Friedrich C-90 has three settings -- low, medium and high. On low, it runs fine, and I will say even on low, it cleans the air beautifully. The trouble begins when you set it on medium or high. An ungodly racket commences. It is the fan blade, inside, hitting the inside of the case. It sounded that way to me, and I was able to confirm it by looking inside the unit with the filter out....the black plastic from the fan blade had made black marks on the beige interior of the unit where it was hitting. Maybe if I ran it for a month the fan blade would wear down and not hit anymore. But I expect more from ANY air purifier I buy -- and especially one in this price range. Well we sent it back, and got a 2nd replacement Friedrich C-90 in exchange. It had the exact same problem. We sent that one back too, and now are living happily, quietly, and allergen free with a BlueAir 501.
4 of 4 found the following review helpful:
Expensive, high-maintenance, not well-builtMay 27, 2007
I got two units for my apartment after reviewing several consumer websites, Consumer Reports, and reviewing government sites. I had them for less than a month...thank goodness Sylvane, Inc., was good about taking them back.
I honestly gave them a chance. I sent one unit back thinking that it was a fluke, the other started misbehaving within a week, and the replacement sounded like it was going to fall apart straight out of the box. Three out of three units had the same problem...hello, McFly? McFly...
Here's the problem: the units, when on high, make a lot of noise. I'm intelligent, so I expect that when a fan is on high, it'll make a lot of WHITE noise. This wasn't white noise, though...it was the sound of the fan hitting the housing inside the unit. It wasn't the "snapping" noise of the electrostatic plates collecting particles, either. That was an entirely different sound.
When I returned them, I told Sylvane that I was not confident that, if I left them on high, that the unit would last long. How much of that fan hitting its housing would it take to burn out a motor? I also explained that, at $450+ each, there shouldn't be problems like that.
Additionally, even though it's reported that the units put off well under the EPA's threshold for indoor ozone, there is a distinctive odor of ozone that emanates from the unit. It probably is below the threshold, but...how much poison is OK with you to put in your lungs?
Finally, the corona wires got very dirty very quickly when I was using the units. Crusty white dust accumulated on the wires, lowering their ability to remove particulates from the air. In two weeks of having the units, I washed one's plates in the dishwasher three times.
One of the features that the company touts about the units is that they are cheaper due to its lack of HEPA filters that need to be changed. Instead, there are two filters, a "prefilter" and a carbon filter. Both are very thin, and both seem very cheap. The prefilter can be vacuumed clean. The other is supposed to last three to six months or until it stops removing odors. But, if you need a replacement...a prefilter is $20 from the Friedrich site and the carbon is $19.95. These are both so thin as to be able to be seen through...certainly not worth those costs.
Count $19.95+shipping every three months plus a weekly dish-washing (has to be alone in the dishwasher, too...) and your "savings" evaporate.
Stick with the tried and true HEPA filters appropriate for the size of room you're trying to get clean.
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