To understand why many of today's health problems can be caused by the home you live in, you need to look back a few years to see what caused this to happen. You see, during the energy crisis of the early 1970s, highly insulated "tight" homes became popular because of their potential to reduce energy costs.
Within a few years, however, complaints started to arise, due to health, and excessive moisture issues caused by indoor pollution, and associated moisture problems within these homes.
In the late 1980s and early 90s, indoor air quality became a nationally recognized issue. Even today, newer and more energy-efficient homes seemed predisposed to the problem. In addition, they retain more humidity and airborne pollutants, which causes longer life-spans, and more productive cycles of microbial activity within the home, such as mold, germs, bacteria and viruses.
This greater activity and concentration of these airborne contaminants, equates to more allergic reactions, and sickness within families, for longer periods of time.
Why is mold so difficult to control? Mold is at the bottom of the food chain. It thrives on very little, grows rapidly, and produces spores, volatile organic compounds, and other toxins. One organism can multiply to trillions in less than three weeks. When given the right conditions, mold can occur anywhere; in homes, schools, workplaces, entertainment centers, vehicles, etc.
The interior of your ductwork and air conditioning equipment, provides an ideal environment for mold growth - especially in the air conditioners inside drain-pan where it is dark, damp, and filled with nutrients. The result can be like blowing air over a swamp or through a sewer and then into your home, vehicle, and workplace.
According to the World Health Organization (WHO), 60% of Indoor Air Quality (IAQ) problems and allergies may be mold-related. Some IAQ diagnosticians and practitioners today say the figure may be as high as 80%. The increased usage of air conditioning systems almost directly parallels the increase of allergies and IAQ problems.
As mold and bacteria grow on coils and in drain pans, they are disseminated through the ducts to occupied spaces. Some mold products (toxins) produce serious and sometimes life-threatening reactions, including allergy, asthma, hypersensitivity, pneumonitis, and in some extreme cases even bleeding lung disease.
Additionally, mold creates a troublesome maintenance problem. Its activity results in dirty coils, a loss of air-flow, loss of heat exchange efficiency, dirty and sometimes plugged drain pans, and excessive energy use.
Ultraviolet light has been used to kill microorganisms in hospitals, barber shops, laboratories, pharmaceutical plants, and at the nation's Center for Disease Control. Residential ultraviolet units have been independently tested and proved to be effective in the constantly moving air environments of heating and cooling systems, killing mold and bacteria quickly and effectively. The UVC energy attacks the organism's DNA and either destroys it immediately or prevents it from reproducing.
For most people, the original motivation for installing the lights is to abate IAQ complaints and/or allergies. However, they are also pleased to learn that many hidden odors are also eliminated with U.V. technology.