Healthy Tips For Better Life

Allergy Relief Air Purifier – Making Indoor Air Healthier

According to the EPA, studies done in the US and Europe have found that most people spend more than 90% of their time indoors and that the concentration of pollutants indoors is higher than it is outdoors. Indoor air pollutants, including smoke, pet dander, dust mites, mold spores and pollen can trigger allergies, relief from which an allergy relief air purifier can provide. Air purifiers remove air contaminants, and are available as whole-house systems or individual room units. Some are also used for odor control. The three most common types of air purifiers used are ultraviolet light, HEPA filters and ionic or electrostatic technology.

UV systems are used predominantly in commercial settings, particularly hospitals and laboratories. Concentrated UV light kills germs and bacteria, including airborne viruses, making these systems extremely effective against illness. Only those particles that come in close contact with the UV bulb are killed, but others that come near it are genetically altered to render them incapable of reproducing. They are only effective in areas in close proximity to the light and are energy intensive and expensive. Although excellent at killing disease-causing germs and viruses, UV systems are not as effective as an allergy relief air purifier because they don't work against dust or pet dander.

HEPA (high efficiency particle absorbing) technology was developed during WWII. HEPA filters are a very effective allergy relief air purifier method as they are able to trap as much as 99.7% of particles as small as 0.3 microns, the size of most viruses, bacteria and allergens. One micron is equal to one millionth of a meter. A fan or blower circulates the air around the purifier unit and helps push it through the high density HEPA filter, trapping the microscopic particles. Filters must be replaced often for maximum effectiveness. Some units also include carbon filters which absorb odors from smoke, food or pets.

Ionic air purifiers use electrostatic energy to clean and purify room air. As with the HEPA system, a fan circulates and draws air filters in the unit and traps contaminating particles. The trapped contaminants are zapped with electrostatic energy and become positively charged. They are effective as an allergy relief air purifier because the positively charged particles attach themselves to the negatively charged plates in the unit, which are then wiped off. Clean air is then re-circulated back into the room. Although they require frequent cleaning ionic air purifiers are able to purify a large area and are relatively quiet.

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