How Does the UV Air Purifier Work and Can Kill Viruses?

March 11,2021

Air purifiers with UV lamps have sprung up and become a potential solution to disinfect the coronavirus. They are also called "disinfection lamps" and they can kill 99.9% of viruses. But can UV air purifiers really protect against COVID-19 and other viruses?

What are the different types of air purifiers?

Most air filters fall into two basic categories: filters or disinfectants. Some combine the two types in the same unit.

The filter is designed to improve indoor air quality by physically removing fine particles that may float around (such as dust, pollen, and pet dander). These are things that happen naturally, but if people inhale them, they can exacerbate their allergies. Currently, the most common type of household filter is the HEPA filter.

Disinfectants are designed to kill bacteria, viruses, mold, or fungal spores that may also float around. These things happen naturally, but if you are exposed to high enough concentrations, they may make you feel sick. Currently, the most common type of disinfectant is UV equipment.

What is ultraviolet light?

Ultraviolet light is invisible electromagnetic light. The main source of ultraviolet rays is the sun. There are three types of ultraviolet rays: UV-A, UV-B, and UV-C. Their difference lies in the wavelength of light, where the maximum wavelength range of UV-A light is 315-400nm. The shortest wavelength of UV-C light is between 100-280nm.

How does the UV air purifier work?

UV air purifiers use UV bulbs installed directly in your HVAC system, targeting bulbs and coils. When contaminated air circulates through the system, the UV-C energy emitted by the bulb will neutralize harmful airborne particles, such as bacteria, molds, and viruses. This energy makes the particles die and cannot multiply and spread in your house.

The UV-C energy generated by these air purifiers is very safe-it is the same energy as our sun, and it can neutralize particles in the outdoor air!

How does UV-C light kill viruses?

Since UV-C light has the shortest wavelength, it also has the most energy of the ultraviolet type. This means that it is the most powerful in destroying the genetic material inside viruses and other microorganisms.

It has been found that UV-C light with a specific wavelength of 254nm is the most effective at killing coronaviruses, such as severe acute respiratory virus (SARS-CoV) and the Middle East respiratory syndrome (MERS-CoV), as well as other viruses, such as H1N1 influenza.

Is UV-C lamp safe?

Most of the UV-C light produced by the sun is absorbed by the atmosphere, so our bodies and skin rarely absorb a lot of ultraviolet light. This is a good thing because UV-C light is considered harmful to the body. The UV in UV-C stands for "Super Violet". Ultraviolet rays are part of the electromagnetic spectrum that constitutes electromagnetic radiation. Electromagnetic radiation includes light, radio waves, and X-rays. UV-C is a sub-band of ultraviolet rays, a powerful form of radiation that can kill microorganisms but is completely harmless to the human body.

How does Alorair help improve indoor air quality?

Our technical team has produced air scrubbers with UV-C lamps. This UV-C lighting technology can be used in conjunction with filters to capture and destroy pollutants to ensure that the entire room benefits from pure air. Not only that, the three-stage filtration system of these new air scrubbers effectively eliminates dust, cigarette smoke, pollen, pet dander, and other air irritants, helping to fight seasonal allergies.

If you are interested in our products, please check our complete air scrubber list to choose your favorite model. We also have some other healthy air-related equipment such as commercial dehumidifiers, commercial air movers, etc. Or if you have any questions, please contact us! We try our best to provide good service to every customer.