Believe it or not, it's extremely beneficial. While you don't want too much UV light getting on your skin, it's been proven to be effective at purifying the air in your home. In fact, when used as part of your air conditioning system, it can significantly improve indoor air quality. Studies on UV lights in air conditioning systems have also yielded significant results.
A study found that UV lights could reduce the amount of mold and bacteria in a test home by 97%. Another study showed that air purifiers with ultraviolet light could reduce the amount of airborne flu virus by 90%. UV duct lights can remove allergens, contaminants and other elements in the air as they pass through return vents. UV lights are activated when your HVAC fan motor does, which will turn on and off when appropriate.
We recommend installing a UV light system designed to disinfect air in the return air duct of your air controller. UV light has germicidal properties, making it ideal for disinfecting air passing through the air conditioning system. Installing UV lights in your air conditioning system is simple, although most people should leave it in the hands of a professional. The location of the hole doesn't have to be precise, but make sure it's relatively centered on the return duct housing; it's not recommended to install the light too close to the return filter.
By installing UV lights on your HVAC system to disinfect vulnerable edges and grooves, you can help prevent contaminants from circulating throughout the house. Even if your air conditioning system has a high-quality air filter, adding UV light will help kill microorganisms and bacteria that may be small enough to pass through the filter. Higher frequency UV light has enough energy to destroy the DNA of bacteria and other microorganisms, kill them and disinfect the air. In fact, the Nobel Prize in Medicine was awarded to Niels Ryberg Finsen in 1903 for his work on the use of ultraviolet light radiation for cure skin infections.
By installing the light as close to the center of the duct as possible, you will ensure that as much air is bathed in UV light when the air conditioner or boiler is running. If you're concerned about indoor air quality, switching to a UV lighting system will improve the energy efficiency of your air conditioning system and, at the same time, reduce your energy costs.