Ultraviolet Air Purification, Before You Buy
An understanding of ultraviolet air purification can save you a lot of money. There are many of these products on the market today. Most of the products are no better than the snake oils that were peddled in the early days of the U.S.A.
These products are designed to kill germs, viruses, and other micro-organisms. They use a process called photocatalytic oxidation to attack the dna of these pollutants.
This process involves the use of an ultraviolet light bulb. Their ability to kill the organisms depends on the strength of the UV field and the amount of time the organisms are in that field. Although the process can kill organisms, it is not the most effective means of improving indoor air quality. The airflows in a typical home hvac system do not allow the organisms to stay in the UV field long enough to be killed. Also, these units do not physically remove the organisms from the home.