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Friedrich C90B Air Purifiers
Friedrich C90B electronic air purifiers use the same technology generally used in whole-house and commercial installations. This Friedrich is ideal for allergy sufferers because it is very effective in removing pollen, dust, mold spores, and other particulates from the airflow that trigger allergy symptoms. While these filterless units do support a thin carbon mat to absorb odors, it is not recommended for MCS (Multiple Chemical Sensitivity) or asthma sufferers because odor and chemical adsorption is not the specialty of the Friedrich. It's great for dust, mold, and pollen though!
These electronic units work with two sets of plates. One set of plates charges the airflow and another collects any particles that were charged by the first set. This makes it a true electrostatic system. Since there is relatively little constriction of the airflow, the units tend to be quiet, producing only a quality white noise due to the operation of the fan.
Friedrich filterless systems require washing of the plates, which can be done in a dishwasher. The frequency depends on the amount of dust and particulate in your house. Some users wash weekly and some wash monthly. Because the plates can be washed, and only the inexpensive carbon mat needs to be replaced, these electronic systems are a very good investment for the budget-minded air purifier customer. However, it is important for the effectiveness of the system that the plates be periodically washed. If you want an air purifier with lower maintenance than this Friedrich air purifier, consider one of our other HEPA filter air purifier units.
Friedrich Air Purifiers - Warranty Information
Friedrich C90B
The Friedrich air purifier always scores superbly in third party tests because it is excellent at removing particulates such as dust, dander, and pollen. In addition, as mentioned above, filterless air purifiers are easy to live with. This electrostatic air purifier technology also provides for low cost of ownership because the main filter element in these electronic air purifiers is washed rather than replaced.
| The Air Cleaner Process | |
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| Room Size | 506 Sq. Ft. |
| Flow: CFM | 410, 340, 280 |
| Noise: dBA | 55, 50, 40 |
| CADR | Dust: 384 Smoke: 326 Pollen: 421 |
| Filters | Electrostatic and activated carbon mat |
| Height | 19" |
| Width | 15" |
| Depth | 21.5" |
| Weight | 28 Pounds |
| Power used on high | 90 Watts |
| Friedrich C90B air purifier | @$539.00 | DISCONTINUED |
| Replacement Carbon Filter | @$24.00 | DISCONTINUED |
Electrostatic technology is an important type of technology used in air purifiers. It is a very efficient and low maintenance type of technology used in many air purifiers in the industry. Electrostatic technology is a process that is found to be very effective at removing particles and contaminants from indoor air. There are a few different types of technologies and filters that are used in air purifiers but electrostatic technology is known to be one of the best and most active types of technology in cleaning indoor air. One of the most effectively proven electrostatic air purifiers on the market is the Friedrich C90B. The C90B is a model of air purifier that is low maintenance and very helpful at removing harmful contaminants from indoor air.
The Friedrich C90B uses no filters in the process of cleaning indoor air. The system is able to clean the air by using electrostatic technology completely. The process of electrostatic technology is set up for optimal performance inside the Friedrich, making the system very useful and effective at removing particles from the air. Using electrostatic technology instead of a filtering system inside the machine has many benefits for the consumer. The process of electrostatic technology in air purifiers may seem complex but it is very simple and effective.
The first step in the air purifying process of the Friedrich is for the airflow to be sucked into the system. The airflow enters the system through a large grill and is first driven through a pre filter. The pre filter is able to first remove any large particles that may be present in the air such as hair or dust bunnies. The air is then taken from the pre filter and moved to the electronic charging plates. This set of electronic charging plates is able to implement a charge onto all particles that are in the contaminated air. No matter how large or small these particles in the indoor air may be, as long as they pass through the electronic charging plates, they will now carry an electronic charge with them.
Once the charging plates charge all the particles that are present in the air, the air is then pushed through the collection plates. The collection plates inside the Friedrich C90B hold a charge that is opposite from the charge that is applied to the particles in the air. Since the opposite polarity of charges are attracted to one another, this causes the particles with their own charge to be attracted to the collection plates with the opposite charge. The particles that are still present in the air are pulled out of the air by the opposite charge and stuck to the collection plates. This process of using the opposite charges to attract the particles can be compared to the way that magnets attract each other if they have opposite charges. The air that has been cleaned of harmful particles by the collection plates is then pushed by the fan to pick up the speed of the airflow. The air is pushed by the fan through an activated carbon mat. The activated carbon inside the C90B is a media that is able to remove all odors from the air. Activated carbon is proven to be effective and is used in many other models of air purifiers to remove odors and gases from indoor air. After the activated carbon mat has absorbed the odors and the air is completely free of particles and odors, it is released into the air. The clean air is released into the room from a large grill in the front of the machine.
After the air is taken through the electrostatic process used in the Friedrich, it is clean and free of particles. The electrostatic technology that is used in the system is able to clean the air of any odors that may be present and any particles or contaminants that may trigger asthma in people. Indoor air can contain dust, mold and pollen that can be harmful for all people to breathe in but can be especially harmful for asthma sufferers. People who suffer from asthma generally know what types of contaminants in the air are responsible for triggering an asthma attack. Breathing in clean indoor air that is free of contaminants is very important to most people, especially asthma sufferers. Many times when indoor air contains toxins such as dust or mold, people who breathe in the air that suffer from asthma will experience an attack. Asthma attacks can be minor, with a simple runny nose or itchy eyes or it could be severe, which could include symptoms such as respiratory difficulty and sinus problems. Asthma sufferers concentrate on keeping their indoor air clean and free of these particles that can trigger attacks in order to avoid these uncomfortable and painful symptoms. The C90B is an air purifier that specializes in removing these asthma triggers from the indoor air. Asthma sufferers or people sensitive to particles and contaminants in the air will suffer fewer reactions from indoor air with the use of the Friedrich.
One of the benefits of these completely electrostatic air purifiers is the low maintenance that it requires in order to stay clean. For optimal performance, the C90B simply needs to be clean and free of particle build up. Since there are no filters involved in the cleaning system of the system, there are no filters that need to be replaced and no buildup that can occur on the filters. In order to keep these air purifiers clean enough to perform efficiently, the collection plates themselves must be kept clean and free of any particle buildup that may occur. The collection plates that are used in the system are dishwasher safe and can easily be cleaned in a dishwashing machine or by hand if desired. The collection plates should be cleaned when there is particulate matter that is visibly stuck to them. The amount of times the plates will need to be cleaned basically depends on how quickly the particles build up on the plates. Sometimes the collection plates may need to be cleaned on a weekly basis or if the air is not as contaminated or the system is not used as much, they may only need to be cleaned monthly. The collection plates can be cleaned with soap and water and never need to be replaced which are unlike the activated carbon mats that are present in the C90B. The activated carbon mats in the system may lose their performance and need to be replaced. However, these mats are inexpensive and easy to replace and can be done so whenever needed. Friedrich systems are low maintenance air purifiers that are not only easy to maintain but are also budget-friendly to keep in working order.
One of the key selling points with consumers when they are considering the Friedrich C90B are the CADR ratings. The CADR, or Clean Air Delivery Ratings, are very high and efficient for this air purifier. The CADR rate is a statistic that is measured by the Association of Home Appliance Manufacturers, or AHAM, and placed on the boxes of air purifiers. These numbers can assure the consumer of the correct volume of filtered air that the system is able to deliver to the room after running it through the system. The Clean Air Delivery Rate is measured for three pollutants, which are pollen, dust and tobacco smoke. Each contaminant is measured separately, giving the air purifier three different ratings on each toxin. The Friedrich C90B received a CADR of 325 for dust, 300 for tobacco smoke and 370 for pollen. These excellent results and high Clean Air Delivery Rates are what stand out for the Friedrich C90B. When consumers compare CADR's between different brands of air purifiers, they are impressed with the high numbers from the Friedrich C90B. The CADR's can help consumers to decide which type of air purifier can be the best for their situation. Since the C90B is effective and fast at removing most contaminants including those that are measured for the Clean Air Delivery Rates, consumers often choose the C90B as the best purchase of air purifier.
The C90B is able to clean a room that is 480 square feet in size or smaller. These air purifiers are 21.5 inches in height and 15 inches in width. They are also 15 inches deep and weigh only 28 pounds. The system is designed with a handle on the top so it can easily be moved into a different room if needed. The model of air purifier is a sandstone color with a black grill in the front so it easily blends into any room. It is a small enough system to be put inside the corner of a room and not take up too much space.
These air purifiers are able to achieve an airflow of 365 CFM when on the high setting, 275 CFM when on the medium setting and 225 CFM when on the low setting. Each setting is very powerful and able to handle a full room of contaminated air. The system is quiet and only makes a white noise in the background due to the fan that is running inside. Friedrich C90B air purifiers give off 55 dBA of sound when on the high setting, 50 dBA of sound when on the medium setting and 40 dBA of sound when placed on the lowest setting. The airflow inside these air purifiers is not constricted by filters and is able to run through the system freely so it does not make too much noise while running. The Friedrich C90B uses only 90 watts of power when placed on the high setting. This allows consumers to leave the system on overnight to clean the air inside a room.
Electrostatic technology is a useful advance of technology used in air purifiers. The Friedrich C90B has proven the effectiveness of this technology with its ability to clean the indoor air of harmful particles and contaminants. These air purifiers have proven their efficiency at cleaning air and their low maintenance parts are a plus for all budget-conscious consumers.
C90B Reviews
This is my second purchase of a Friedrich C90B and they are just wonderful. I use to get bad sinus infections and all kinds of problems. Since I have been using the C90-A, I have not had any infections. It's in my bedroom and the difference between that room and the rest of the house is amazing! It's so clean and fresh in there. Now my dog has skin allergies so I am buying one for him
!Thank You for such a terrific product.
Peggy K.
Baltimore, MD
"I'm a believer" - my wife is remodeling the house again, maybe "still" is more accurate, and the demolition of our slate entryway combined with the drywall sanding put dust everywhere and started to trigger my asthma. After I got though a course of prednisolone and antibiotics I felt better for a while. Then it started up again. I just could not get better! We got a several air purifiers; a C90B which went in downstairs between the living and dining room and an Austin Air Purifier HealthMate Jr. + for my TV room (BTW We already had a HealthMate in the bedroom). I started to see improvement after two days. To be frank I am amazed I did not expect the addition of a couple of air purifiers to have such an impact on my health. Bonnie is a genius. Please tell her I said so.
Bob J.
Fort Defiance, OH
The Friedrich C90B air purifiers that you sold me work great! They significantly reduce the dust in my bird room and I have been sneeze-free for several days. I keep Cockatoos. They are amazingly dusty. When they shake you can literally see the fine dust going airborne around the. My Doctor gave me the ultimatum to get rid of them but they are my babies and I just couldn't. Anyway, I had no idea that air purifiers could actually address my problem until I followed a link to your site from a bird cage site and called. I was shocked...someone answered the phone and I did not have to go though four levels of navigation menus....you just answered and helped me. I will tell all my friends about the air purifiers and where I got them. God Bless You!
Galena P.
New York, NY
