HEPA Purifiers

Though HEPA filters may seem to be a new technology, the concept was actually developed during the Second World War by the US Atomic Energy Commission. It was first made to capture and remove radioactive dust from the air that could have presented a hazard to workers. The HEPA filter was designed to protect the human respiratory system. In fact, the US Centers for Disease Control (CDC) guidelines for preventing transmission of tuberculosis recommend that HEPA filters be used. They are designed to filter out 99.97% or more of particles that are 0.3 microns in diameter or larger. A micron is a metric unit of measure that’s equal to one millionth of a meter. It…

Air Purifiers For The Home

Three of the best air purifiers for the home are the Honeywell 50250N, the Hamilton Beach 04383, and the Rabbit Air BioGS 421A. Here are some of the features that make these three top choices in home air purification. 1. The Honeywell 50250N The Honeywell air purifier model 50250N is a true HEPA air purifier. This means that it uses a High Efficiency Particulate Air (HEPA) filter, which filters out 99.97% of particles that are larger than 0.3 microns in diameter. It has a Clean Air Delivery Rate (CADR) of 250, and that makes it appropriate for a room of 375 square feet in area. The Honeywell 50250N retails for around $160 and according to…

UV Air Purifier Information

Several home air purifier manufacturers have started including an ultraviolet (UV) lamp in their air purifiers. The reason for a UV lamp is that ultraviolet light in sufficient doses kills certain harmful microorganisms like viruses and bacteria. The people who are most at risk from airborne harmful microorganisms are very old people and very young people. That’s why air purifiers with UV stages are often seen in nursing homes and in child care centers and pediatrician offices. Ultraviolet light is invisible to the human eye. The wavelength of UV light is shorter than the shortest-wavelength light we can see, which is violet. There are three types of UV light: UVA, the longest wavelength UV light;…

Why is Carbon Used in Air Purifiers?

Activated carbon is used in home air purifiers because, like air sponges, carbon filters trap airborne odors and gases. The reason it is called "activated" charcoal is that it’s been treated with oxygen. This opens up tiny pores between the carbon atoms and the pores trap the odors and gases. Carbon granules have a very convoluted surface, providing it with a large surface area to volume ratio, which makes carbon filters tops for trapping the gases that go through particulate filters first. But eventually, the pores become clogged with contaminants, and the filters must be replaced to function properly. (Picture Caption) You an see in these closeups that activated carbon has a honeycomb formation. The…

Guide to Air Purifier Repair

Indoor air pollution is a fact of life, and in many cases the air indoors is less healthy than the air outdoors. Between dirt, pet dander, dust, and various microorganisms, indoor air can get quite dirty. Many people use air purifiers to make the air that they breathe inside their homes cleaner. But like every other electronic appliance, air purifiers get dirty, and when that happens they run far less efficiently, but there is a lot you can do to improve its efficiency if you’re a reasonably confident do-it-yourselfer. Home air purifiers are fairly simple devices, and periodic maintenance according to the instruction manual can keep them running efficiently. You’ve probably at some point noticed…

Advanced Pure Air Newport 9000

The Advanced Pure Air Newport 9000 is marketed by Real Spirit USA and is manufactured in China. It strongly resembles the Mitsubishi MHI-6800 Intelli-Pro, with a futuristic design and shape. The Advanced Pure Air Newport 9000 is sold at Costco, Sam’s Club, Amazon, and Target for just under $280. While it doesn’t contain any breakthrough technology, it does contain several air cleaning technologies in one package. It monitors air quality for both dust and odor and has an LED four-level display showing indoor pollution levels as well as a sensor that indicates when the filters need to be replaced or when the electrostatic collection grid must be cleaned. The fan speed adjusts to pollutant levels,…

Coway Air Purifier

The Coway AP-1009CH Air Purifier is built in Korea by Woongjin Coway. The brand was introduced to the U.S. in 2007, and was rebranded by retailers like Lowes and Sears. Coway dominates the air purifier market in Korea, claiming 40% of sales there. The AP-1009CH is a mid-market product at $279 and is sold by Amazon, Walmart, and AirPurifiersAmerica.com. EPA Energy Star states that the Coway AP-1009CH has a clean air delivery rate (CADR) of 186.9 for dust, 149.9 for smoke, and 203.8 for pollen (for an average of 180). These rates make this air purifier suitable for small and medium rooms. The AP-1009CH has a three stage filter system and four fan speeds, from…

Panasonic Air Purifier F-P15HU2

The Panasonic F-P15HU2 air purifier retails for around $540. It is a small air purifier with a high efficiency particulate air (HEPA) filter (model F-Y15XS, $36) and a charcoal filter (model F-Y55XS, $28). This is an automatic, electronic air purifier that is a good choice for a single room. For its price range, the F-P15HU2 is quiet. When set on a low, but still useful, air volume exchange rate, it is quiet enough for undisturbed sleep. Rated as a "best buy" by consumerguide.com, the F-P15HU2 does not include a pre-filter that some air purifiers use as protection for the main HEPA filter. However, it does have a pre-filter layer attached onto the HEPA filter that…

Ion Purifier: Pionair

The Pionair ion purifier does not have a filter and doesn’t trap airborne particles such as pet dander or hair. In this sense, it is more like an air sterilizer than an air purifier. The Pionair uses negative ionization and photocatalysis to clean the air surrounding the machine. Prices range from approximately $400 to $600, and the machines are made in the U.S. by HealthQuest Technologies in Georgia. A purifier like the Pionair works best in humid environments where conventional high efficiency particulate air (HEPA) filters don’t work as well, such as damp rooms like basements and bathrooms. In these environments, mold spores and musty smells accumulate, and this is where the Pionair works best….

Sun Pure Air Purifier

The Ultra Sun air purifier is a premium priced air purifier that uses multiple filters as well as ultraviolet technology to clean and sanitize the air. It retails for around $600. A pre-filter removes particles larger than 5 microns in size and is easy to clean with a vacuum cleaner. Next, two layers of gas and odor absorption use activated carbon, zeolite, and potassium permaganate layers make up this filter. The HEPA filter is next. True HEPA filters remove 99.97% of particles that are 0.3 microns in size or larger. The next step in Sun Pure’s filter system is a photocatalytic oxidation chamber. It has a titanium dioxide grid that is activated by ultraviolet light….