The Types Of Air Purifiers That Are Available On The Market

12/11/2021
Blast Auxiliary Air Cleaner honest review

There are many technologies air purifiers employ for reducing the indoor pollution. Certain are better than others. Some are harmful to your health.

Models that have mechanical filters

This is how CR examines

Pleated filters are air purifiers that use fans to move air through fine fibers. The result is that particles are trapped. Filters with very fine mesh are HEPA filters those that are certified to catch 99.97 percent of particles that are of an x-size. HEPA filters are able to remove larger particles too such as dust, pollen, and some mold spores, while they're suspended in the air.

Models with activated carbon filters

Instead of trapping particles like mechanical filters, the sorbent filter employs activated carbon to draw some compounds that cause odor from the air. They can also combat certain gases, but they're not particularly effective against formaldehyde, ammonia, or nitrogen oxide. Most air purifiers feature activated and pleated carbon filter to remove particles. Activated carbon is more saturated than pleated filters however, it requires replacement more frequently every three months as opposed to every six or 12 months for pleated filters. It is recommended to budget for replacements: Activated carbon filters can cost as high as $50 for each. To discover more info about Air Cleaner Price, you must visit our site.

Ozone generators

These machines produce ozone, a molecule that can react with certain pollutants and alter the chemical makeup of pollutants. They can lead to unsafe indoor air quality. CR doesn't recommend them. Ozone generator makers often state that their products emit safe levels. However, in previous tests, we found that some generators rapidly exceeded the Food and Drug Administration limit of 0.05 parts for million for medical devices. Additionally, studies that were reviewed by the EPA have proven that lower levels of ozone the chief ingredient in smog aren't effective enough to remove indoor pollutants. Studies have also shown that ozone can be associated with a decrease in lung function, as well as an increase in chances of irritation of the throat, coughing, chest pain and inflammation of lung tissue. Ozone exposure can also worsen asthma, emphysema, as well as asthma and bronchitis.

Electronic air purifiers

Electrostatic precipitators and ionizers are devices that charge particles suspended in air, so that they adhere to the plates that are attached to the machine or other surfaces with a magnetic-like attraction. CR does not typically test electronic air purifiers or recommend these devices, due to their ability to produce ozone.

Ultraviolet germicidal irradiation (UVGI)

Some manufacturers claim their air purifiers kill airborne bacteria, viruses and fungal spores with UV lamps. Certain mold and bacteria can withstand UV radiation. To ensure UVGI air purifiers that are efficient they must be able to emit UV light should be strong enough. The duration of the exposure should be for at minimum 30 minutes. Although we do not test UVGI technology in CR, some mechanical purifiers which we test might have this function.

Photocatalytic Oxidation

PCO uses ultraviolet radiation and the photocatalyst titanium dioxide in order to generate hydroxyl radicals which are able to oxidize gaseous pollutant. The process may result in harmful byproducts based on the pollution. CR is not yet able to test PCO technology. Although there have not been numerous field tests of the efficacy and safety of PCO purifiers, researchers from Syracuse University found that they could not remove VOCs commonly present in indoor air.

A different version of PCO known as PECO emerged more recently from the manufacturer. We tried the air purifier and it did not score highly in our tests of dust, smoke, and the removal of pollen.

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