When you think of dirty air, you probably think of smoggy city skies, but The Consumer Energy Center reports that air inside your home can contain more pollutants than the air outside. Air purifiers may offer a solution by improving the air quality and reducing allergens inside the home. There are several types of air purifiers, each functioning differently.
Filtration
Filtration air purifiers clean the air by bringing it through a filter, most commonly a HEPA filter. HEPA stands for High Efficiency Particle Arrestor. Filtration style air purifiers require periodic changing of filters, which can result in a high cost of maintenance. HEPA filter air purifiers are considered the most effective portable air purification system.
Electrostatic Precipitators / Ionizers
Electrostatic precipitators and ionic air purification systems work by pulling air into the machine, and then charging and trapping particles on a collection plate. Cleaning of the system involves rinsing the collection plate. Because no filters are used, this type of system costs less to maintain. Electrostatic and ionic air purifiers are less effective than HEPA filter models, and cannot rid the air of dust, pollen or smoke. Some emit ozone, a medical concern.
Ozone Generators
Ozone generator air purification models work by releasing high levels of ozone, which break down molecules in the room. Consumer Reports.org regards ozone as a serious health concern and does not recommend the use of ozone generator air purifiers.
Whole-House Air Cleaners
This air purification choice only works with a forced-air heating system. Whole-house systems can be costly and require professional installation. Some whole-house systems use an electronic precipitator, emitting ozone into the atmosphere. This type of air purification system may force particles onto the walls, leaving a stain. Most of the whole-house systems tested by Consumer Reports.org preformed well.
