Every commercial air purifier comes with a HEPA filter that effectively blocks all particles of tiny size such as dust, pollen, bacteria, dust mites, viruses, mold and other airborne allergens from entering into the atmosphere and affecting the user’s health. However, other filters on the market also utilize ultraviolet (UV) sterilization technology. With the use of UV light, airborne pollutants are broken down and removed from the air. While some experts question the effectiveness of HEPA filters to address these types of pollutants, others believe that it is the best way to address this type of air pollution. Based on this controversy, the air purifier is then classified into 3 categories: General, Special, and Institutional/Building.
A General air purifier works by removing larger particles and larger airborne particles. The HEPA or “high efficiency particulate air” technology uses activated carbon that filters out small particles and gases while leaving in larger particulates that are essential for human breathing. Activated carbon filters are considered by most experts to be more effective than sterilization or ionic filters. Since there is some debate over the extent to which UV light is necessary for airborne allergens to be removed, the second type of air purifier purifiers are sometimes referred to as “ionic”. It should be noted, however, that an “ionic” filter is not capable of removing particles smaller than 10 microns from the air.
The third type of filter, a Special air purifier works by removing smaller yet still potentially hazardous pollutants such as formaldehyde, benzene, lead, and VOCs. This type of filter is usually incorporated into a larger device that is designed to filter the air in multiple rooms simultaneously. As a result, these types of devices are often used in industrial situations. They are sometimes required by OSHA as well, when air is deemed to be polluted.
Hepa air purification systems use either carbon filtration or ionic filtration. Both of these methods work by attaching an electrostatic charge to particles such as dust, mold, and pollen in order to prevent them from being released into the air. Electrostatic filtration can remove those particles, which are positively charged, whereas ionic filters use an opposite reaction to prevent positively charged particles such as dust and mold from becoming airborne. These types of filters are also effective against gases such as methane, but not other chemicals. In cases where the chemical is present in only minute amounts, the particle filter will not completely remove it.
Commercial air conditioning and refrigeration systems usually incorporate both a carbon filter and an ionic filter. Carbon filters work by removing dust and debris from the air conditioning condenser coils while protecting the coils from damage by encapsulating them within a polymer sleeve. The polymer sleeve also absorbs energy from the air conditioning unit so that they do not heat up and burn out. This allows for a constant cool temperature, which is important for operations which require ice or snow conditioning in harsh climates.
Although an ultraviolet UV air purifier may not look like it needs any introduction, there are actually several health benefits to owning one. The body’s immune system is enhanced through exposure to UV rays, especially the UVA range. This can increase resistance to illness and slow the aging process. Other benefits of a UV filter include better lung function, increased eyesight, and healthier skin.