Scientists have known for decades that a type of ultraviolet light called UVC light can rapidly kill microorganisms, including bacteria and viruses. But traditional germicidal UVC lamps cannot be used directly to eliminate airborne viruses in indoor spaces because of potential health hazards to skin and eyes.

For nearly a century, UV technology has proven to be one of the most reliable and effective ways to keep indoor air clean and sterile. Upper room UV-C systems (also known as upper air) have been used to control airborne infectious diseases and improve indoor air quality.

A well-installed and maintained professionally designed Ultraviolet Germicidal Irradiation (UVGI) system can effectively kill the virus that causes COVID-19 and help protect people indoors from disease. High-altitude UVC continuously emits UV-C rays through the upper air or upper room sterilization ultraviolet device to sterilize the air in the high-ceiling room. Since UV-C energy can be harmful to the skin and eyes, this method of disinfection should only be used with specially designed fixtures that are properly installed. The risk of exposure is very limited if safety measures are followed correctly.

The ultraviolet sterilization unit in the upper room is constantly running, so the air is always sterilized. This helps prevent the airborne spread of viruses and bacteria. Many other products only disinfect surfaces and do not prevent transmission.For example, UV germicidal products that sanitize surfaces, such as hand-held wands or mobile UV units, are only effective when pathogens come into contact with the surface again. Even germicidal UV units used in HVAC equipment cannot stop human-to-human transmission.

Aerial installations have few limitations other than ceiling height requirements. They can be used in patient waiting rooms, busy retail areas, crowded restaurants, school classrooms or lobbies.

High-altitude disinfection is one of the most effective defenses against airborne respiratory viruses such as SARS-CoV-2. For more than 70 years, high-altitude UVGI has been used very successfully to combat diseases such as tuberculosis. The mechanism for pathogenic microbe and virus inactivation through UVC irradiation is relatively straightforward: UVC irradiation induces damage to the genomes of bacteria and viruses by breaking bonds and forming photodimeric lesions in nucleic acids, DNA and RNA. These lesions, in turn, prevent both transcription and replication and ultimately lead to inactivation – preventing microorganisms and viruses from infecting and reproducing.

These lesions, in turn, prevent transcription and replication, and ultimately lead to inactivation, preventing microbial and viral infection and reproduction. At the same time, as pathogens pass through the active UVC disinfection zone, the aerial disinfection system inactivates the virus before it can re-transmit. This continuous disinfection is more effective than other intermittent treatments.

Aerial disinfection systems have historically used replaceable mercury lamp technology, requiring lamp replacement every two years. Today, LED-based UVC aerial sterilization units represent the next generation of sterilization technology and offer huge advantages over traditional mercury lamp systems.

In order to make the effective system more practical, GK has developed a brand-new healthy lighting solution, using lighting as the carrier of indoor air sterilization downlights (5 inches and 6 inches universal), Downpuri LED UVC high-altitude disinfection system. Compared with traditional aerial disinfection systems, it is smaller, lighter and more environmentally friendly. The air convection effect is quickly formed by the centrifugal fan in the device, and the bacteria and viruses floating in the air are sucked into the cavity from the side. The ultraviolet light emitted by the 8 UV-LEDs in the cavity kills the bacteria and viruses. Clean air is released under the body.