| The aim of keeping an air purifier is to free the air | | | | air delivery rating. |
| from all of the contaminants. When environmental | | | | There is some controversy over the claim |
| researchers highlighted the fact that the indoor air | | | | involving ionic air purifiers since these machines |
| is dirtier than the outdoor air, the popularity and | | | | generate the pollutant ozone. High concentration |
| the demand for air purifiers soared. Air purifiers | | | | of ozone emitted by the air purifiers can pose |
| will be helpful to persons suffering from allergies | | | | some threat to health. |
| and asthma and to those who want to reduce | | | | According to the American Lung Association, the |
| the risk of passive smoking. | | | | effectiveness of an air purifier depends on the |
| Air purifiers on the market use various different | | | | unit's efficiency and the amount of air drawn |
| techniques for purification of the air. Electrostatic | | | | through it. Look into the type of pollutants it will |
| charges, ionizers, charcoal and absorbents are | | | | capture and the percentage it captures. Select a |
| some of the methods used to purify the air. | | | | device that circulates air many times an hour. . |
| Germicidal ultra violet light is also used for this | | | | Besides air circulation, ensure to consider other |
| purpose. Find more info at [ | | | | factors such as: |
| Visual appeal, noise level and filter replacement | | | | - Can it move air from all corners of the room |
| frequency are some of the factors to be taken | | | | - Size of the room |
| into account when selecting an air purifier. Filters | | | | - Whether the air purifier is meant for any specific |
| also come in many different varieties. Some of | | | | problem such as smoke or pollen. |
| them can be cleaned by hand, water or by | | | | - Adaptability to the change in needs. |
| vacuuming. Some of these filters need to be | | | | Cost of an air purifier and its efficiency are not |
| replaced within months depending upon the usage. | | | | related. Recurring costs are also to be taken into |
| Air purifiers filtering out 99.97 percent of particles | | | | account. The energy needed to run the purifier will |
| of 0.3 micrometers in the air are set as the best | | | | make quite a lot of difference to the power bill. |
| air purifier. These types of purifiers are very | | | | Noise can be a big problem if the air purifier is |
| expensive. | | | | meant for use in a bedroom or in the family |
| The Association of Home Appliance Manufactures | | | | room, since many air purifiers use loud motors to |
| (AHAM) is the agency rating the performance of | | | | draw air through filters. |
| various air purifiers. The indicator used is the clean | | | | |