From HEPA filtration and ultra-violet purification, nothing is better than knowing that you and your family are enjoying the indoor air quality you deserve, especially in Florida!
When organic matter is passed through a media that contains ultraviolet light, a catalytic reaction occurs. This reaction, in essence, renders otherwise harmful or irritating organics harmless. These include pollens, certain pathogens, and, especially, mold spores. When the reaction is complete, the material becomes inert. The UV process is photochemical in nature and it works as a cleansing mechanism. It should be noted that most of the contaminants that are found in home air that are considered pollutants are virtually all carbon-base, organic compounds. When exposed to ultraviolet intensities of between 240 nm and 280 nm, they break down and become harmless to humans. It can also break down or kill DNA in many microorganisms. The effectiveness of the UV, however, depends on the amount of exposure time and the intensity of the short-wave UV light.
In addition to cleaning air, ultraviolet light can also render sterile tools and work areas that are often found in medical and dental facilities, labs, and other places. Generally, these entities will use a commercial-level lamp that operates at 254 nm (at 86 percent efficiency) which studies have shown fall within one of two optimal germicidal ranges. The other optimal level is around 185 nm. Low-pressure UV lamps work well in the upper range as the quartz glass that is used is less opaque at the 254 nm than at 185 nm. The light produced at these wavelength levels causes changes on the DNA with the thymine molecules which are adjacent to the DNA. When enough defects are caused on the DNA of the microorganism, it cannot replicate, which, in effect, makes it harmless. Lamps that are used for sterilization are only a part of the sterilization plan at labs and other facilities; other methods are also employed to ensure full sterilization.
For home use, where full sterilization is not as critical, a UV lamp can be placed within the home air handler. The number of lamps needed will depend on the size of the HVAC unit and the size of the home's interior. Most UV lamp systems are left on to be as effective as possible, but can be turned off if the homeowner desires.