As an expert in the field of air quality, I have witnessed the growing popularity of UV lights as a means of purifying indoor spaces. These lights are believed to be effective in deactivating pathogens, preventing the growth of mold and bacteria, and improving overall air quality. However, recent research from MIT has shed light on potential risks associated with these UV lights. While this does not mean that UV lights should be avoided altogether, it is important to understand the proper usage and potential side effects. UV lights are known for their ability to deactivate pathogens in air currents, making them a popular choice for air purification.
But their usefulness doesn't end there. These lights are also effective in preventing the growth of fungi and mold that can thrive in wet areas of heating, ventilation, and air conditioning (HVAC) systems. By sterilizing the air as it circulates through the system, UV lights not only ensure cleaner air but also contribute to the longevity of the HVAC system. Many people wonder if using UV lights for air purification has any side effects or health risks. The short answer is no, as long as the lights are properly designed and installed.
However, it is crucial to never attempt to install these lights on your own without the proper safety equipment and knowledge of UV protection. While modern air purifiers take advantage of UVC's ability to combat germs, the use of ultraviolet light for disinfection has been known for over a century. Of all the UV bands, UVA rays are the most penetrating, bombarding us with around 95% of the UV radiation that reaches Earth's surface. This makes them highly effective in disinfecting surfaces and even the air between the UV unit and target surface. When it comes to using UV lights for air purification, the most common method is through duct treatment. This involves placing exposed UV lamps in the HVAC system, rather than in living spaces.
However, there is a newer type of UV light with a wavelength of 222 nm that is safe to use directly on people, as it does not penetrate as deep into human skin. Aside from improving air quality, the integration of UV lights into air conditioning systems can also reduce the demand for some system fans. This is because the lights help keep coils and interior surfaces clean, improving air flow throughout the system. For those looking to achieve a higher level of air disinfection throughout their home, integrating UV lights into the air conditioning system is the most effective option. In light of the recent research from MIT, it is important to understand the potential risks associated with UV lights. The researchers conducted a series of experiments, exposing clean air to UV lights and then adding organic compounds one at a time to see how they affected the compounds being produced.
They found that initially, ultraviolet light interacts with oxygen in the air to form ozone, which can be harmful to our health. While stand-alone room units are relatively easy to use, integrating UV lights into air conditioning systems can be more complex. It is crucial to have a professional install these lights to ensure proper usage and minimize any potential risks.
