If you want to know everything about UV air purifiers, you just have to take a look around. There’s not much to know about them, but there are some things you should keep in mind. The first is that ultraviolet light can be dangerous if you’re exposed to it.
Most UV air purifiers keep the bulb tucked away in the back behind other air filters so that none of it escapes the contraption. Ultraviolet light is powerful enough to destroy bacteria and viruses, but it is also enough to burn your cells. This is where sunburn comes from, after all. The sun produces this ultraviolet light and long exposure can leave you with very red skin!
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However, because it is in an air purifier, it also purifies the air that goes through it. While regular air filters will catch whole, solid particles, UV light will destroy the other organic things like bacteria and viruses. There are other types of UV lights as well, including ones you can put directly into air ducts.
Those are called in-duct UV air purifiers. Whichever one you go with, it can improve your environment very much and a UV air purifier can increase your health over time.