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Using UV Light to Kill Bacteria and Mold

There are three types of ultraviolet (UV) wave lengths, and although powerful, they cannot be seen by the human eye. UV-A is more commonly known as black light, UV-B comes from the sun, and UV-C can kill mold, bacteria, and mildew and is used to protect equipment in medical settings. Because of its cleaning powers, a UV-C lamp can also be added to the indoor cooling coil of your HVAC system so that harmful do not become airborne and circulate throughout your home.


  • UV light sends out short wavelengths of energy that penetrate mold. By doing so, it breaks up the DNA inside to clean and eventually inactivate it.
  • To be effective in eliminating the mold, bacteria, or mildew, it needs to be exposed directly to the UV-C light.
  • Installing a UV lamp as part of your HVAC system helps kill mold, bacteria, and mildew that flourish.
  • Since UV light can be harmful to people, you should never look directly at the UV lamp while it’s operating.

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