Ozone Air Purifiers Use Powerful Oxidation Properties Found in Nature

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When present in the upper atmosphere, ozone is known for its ability to filter ultraviolet light, and in the lower atmosphere, ozone is used as an industrial disinfectant and can also reduce airborne contaminants.

Although industrial ozone applications are somewhat limited, ozone is primarily used to kill microorganisms in water sources because of its high oxidation potential. Many municipal drinking water systems use ozone to kill bacteria instead of the more common chlorine. Other common uses for ozone in water purification includes the disinfection of laundry in hospitals, care homes, and food factories; swimming pool and spa sanitation; and the cleaning and bleaching of fabrics during the manufacturing process.

However, with regards to air purification, ozone air purifiers have recently received some negative press because of the fact that high ozone concentration levels have been shown to cause health problems such as chest pain, coughing, and shortness of breath. In spite of this, because ozone air purifiers use the powerful oxidation properties of ozone to alter the chemical composition of pollutants and transform them into carbon dioxide, oxygen, and water without the use of a central filter, they can be extremely useful in large, high-pollution areas.

Essentially, ozone is a molecule comprised of three oxygen atoms. Two atoms of oxygen from the basic oxygen molecule - the oxygen we breathe that is essential to life - and the third oxygen atom can detach from the ozone molecule and reattach itself to the molecules of other substances. This ability to react with other substances substantiates air purifier manufacturers' claims. Because ozone is highly reactive, it can destroy certain types of bacteria and chemicals, and it is highly effective at neutralizing strong odors such as cigarette smoke. Ozone air purifiers and air cleaners can come in the form of units that emit ozone-rich gaseous plasma or personal breathing devices that are worn around the neck. Some proponents of ozone air purifiers even claim they can improve the health of asthmatics, the elderly, and even depressed pets.

When considering an ozone air purifier, keep in mind that while they do have air purifying applications, they have little to no effect on solid particulates, and are best suited for large, highly-polluted areas such as bars and salons, or in non-inhabited rooms such as woodsheds. Some ozone air purifiers may also produce a slight odor that is akin to chlorine, and it can cause irritation to the eyes, nose, and throat in those with respiratory difficulties and sensitive lungs. Nevertheless, if used intermittently, with caution, and preferably in conjunction with other air purification technologies, ozone air purifiers can help sanitize and deodorize the air.

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