Friedrich Pre-Filter for C-90B Air Purifier

by Friedrich

Product Details

• Shipping Weight: 2.1 ounces
• ASIN: B0002U35DM
• Average Customer Review: 3.8 out of 5 stars  See all reviews (12 customer reviews)
• Amazon Best Sellers Rank: #133,016 in Office Products (See Top 100 in Office Products)
• Date first available at Amazon.com: July 19, 2006

Product Description

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.

Customer Reviews

Most Helpful Customer Reviews

29 of 30 people found the following review helpful:

5.0 out of 5 stars better than sharper image's ionic breeze, December 25, 2004

By 

M. Hamdy "mother of a newborn in a dusty old ... (America) - See all my reviews
(REAL NAME)   

This review is from: Friedrich Pre-Filter for C-90B Air Purifier (Office Product)

There are two types of filtering systems; whole house hookups which are installed professionally or self-installed, and individual room units. Consumer Reports says "The most effective type of air cleaner is a professionally installed whole-house system; but it's also expensive and feasible only in houses with forced-air heating or cooling. Simple replacement furnace filters are inexpensive and easy to maintain, but generally better suited to clearing large particles from the air. Room air cleaners are your only option if you don't have a forced-air system."

Of the room units, there are two basic technologies HEPA (high-efficiency particulate air)filters, in which a fan draws air through a paper or fine-mesh filter, and electrostatic precipitators which draw air through an electrical field. Charged particles are then trapped on oppositely charged collector plates.

All precipitators generate small amounts of ozone, which has an odor that may be objectionable. They may also make a crackling sound as they accumulate dirt.

The best precipitators use a fan. I know everybody loves the The Sharper Image and the Hoover one but they have no fan; the Honeywell Environizer has a weak one. The Friedrich C-90 has a fan.

ConsumerReports.org rated this one ten times better over the Sharper Image ones, which are basically over rated and you're paying for the marketing and packaging. The Friedrich C-90 topped all of Consumer Reports tests on filters hands down.

It's not as sleek as the Ionic Breezes, but it gets the job done, and keeps your home as clean as any machine on the market will.

18 of 21 people found the following review helpful:

5.0 out of 5 stars Breathing Easier..., August 30, 2005

By 

ValCal - See all my reviews

I bought this item with high hopes after reading a positive review. My daughter has bad allergies and my husband and I were hoping that this might help. Since she has been using the air cleaner her symptoms are significantly improved. The unit is easy to use and I like the idea of not having to spend a lot of money later for big filters.

7 of 8 people found the following review helpful:

5.0 out of 5 stars Absolutely Amazing!, July 12, 2006

By 

James K "James" (Los Angeles, CA) - See all my reviews

I used to own a cheaper unit that I bought at a local store. After reading that Consumer Reports gave this a best buy ranking, I decided to give it a try. Although more money than I wanted to spend - so far I love it! My air is definitely cleaner, I don't wake up with sinus headaches anymore, and it has made a big impact.