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1. What are UV air purifiers?

UV air purifiers are air purifiers that use Ultraviolet (UV) lamps to purify the air. UV air purifiers don´t have a cloth filter like air purifier HEPA filter (although there is an innovative approach available in the market that uses UV lamp combined with a HEPA filter) or work by ionizing the air like the air ionizer purifier . Also, they don't produce ozone like ozone air purifiers to break down particles in the air. These devices don't use activated carbon air filters or hydroxyl radicals to purify the air. They operate in a very unique and interesting way that I’m going to describe to you here.

2. How does the UV air purifiers work?

This devices uses ultraviolet (UV) lamps to sterlize micro-organisms that pass through it. What does this mean? Micro-organisms including germs, viruses, bacteria, and mold, when treated with appropriate UV light in significant dosage and significant period of time can no longer reproduce and grow.

There is some questioning around this kind of purifier, whether the UV light has enough power and time to act on micro-organisms and sterilize them correctly while the air is moving through it.

As I said before, there is a innovative approach on the market that uses UV lamps combined with a HEPA filter, so that the UV lamp has enough time to perform while the micro-organisms are trappen in the filter. This approach has been proven to be more effective.

3. Resume

UV air purifiers use ultraviolet (UV) lamps to sterlize micro-organisms.

Micro-organisms when treated with appropriate UV light in significant dosage and significant period of time can no longer reproduce and grow.

4. Advantages

- Effective: Micro-organisms including germs, viruses, bacteria, and mold that may cause disease are effectively destroyed.

5. Disadvantages

- Allergens: UV air purifiers are not effective against allergens.

- Odors: UV air purifiers are not effective against odors and cigarette smoke.

- Chemicals: UV air purifiers are not effective against chemicals.

6. Key Concepts

- Removes Allergens (Dust, Pollen, Mold Spores)? - Some allergens are destroyed.

- Removes Bacteria? - YES

- Removes Viruses and Germs? - YES

- Removes Odors? - NO

- Removes Cigarette Smoke? - NO

- Removes Chemical Fumes? - NO

Date Published: Oct 21, 2008 - 12:45 am

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