Friedrich Pre-Filter for C-90B Air Purifier
by Friedrich
(Click here)
Product Summary
Manufacturer: FriedrichBrand: Friedrich
Edition: Office Product
Publisher: Friedrich
Studio: Friedrich
Music Label: Friedrich
Product 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.
Kitchen and Housewares Reviews of Friedrich Pre-Filter for C-90B Air Purifier
Customer Review: Expensive, high-maintenance, not well-built
Summary: 2 Stars
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.
Description of Friedrich Pre-Filter for C-90B Air Purifier
Award winning air purifier which never needs costly HEPA filter replacements. Excellent at particle and smoke removal, this unit filters your air at the lowest possible cost. The C-90B is an improvement on the older C-90A model - providing coverage of a larger area and improved clean air delivery rates (CADR). Prefilter and carbon filter included. Effectively covers over 500 square feet.Kitchen and Housewares
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