Germicidal or uv lights for hvac systems are used to kill the dna of germs viruses mold spores bacteria and fungi as they pass through the air handler system.
Do uv lights kill mold spores.
Uv c to be exact which is the shortest wavelength of uv radiation and thus the highest energy.
Since the 18th century it is widely used in industrial processes medical equipment and hospital e g.
Uv light is a proven technology that can kill mold powdery mildew germs and other pathogens from spreading.
In fact as early as 1878 arthur downes wrote a scientific paper describing the sterilization of bacteria to short wavelength light.
The best part is that the lights are harmless to pets and humans.
It s not biologically toxic but it will eliminate the viability of mold spores along with other organic compounds like bacteria viruses and some volatile organic compounds vocs.
This affects the functioning of the uv lamp when killing mold and eventually defeats the whole purpose.
While uv light is effective as killing molds fungi bacteria and really any living organism it does not penetrate very well.
Furthermore dead mold spores can still produce allergic reactions so uvgi cleaners may not be effective in reducing allergy and asthma symptoms.
Uv light has been in use for many years as a disinfecting technology to not only kill mold but also bacteria viruses and other pathogens.
If you are trying to kill spores typically they are more resistant to uv also as they tightly pack their dna into hardened bundles that are tightly wound until conditions are right for them to grow.
Uv lights in the air conditioning system will kill mold indirectly.
Leaving the regular lights turned on while using uv light to kill mold is one of the biggest blunders one can make.
In these cases ultra violet uv lamps are effective in killing mold and mold spores.
But typical uvgi cleaners used in homes have limited effectiveness in killing bacteria and molds.
This is how uv purifiers work and why they work so well.
Effective destruction of some viruses and most mold and bacterial spores usually requires much higher uv exposure than is provided in a typical home unit.
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Uv c lamps which provide uv light on the c bandwidth are best for dealing with mold problems as other types of uv light don t damage the mold enough.
This type of radiation comes into contact with organic materials such as mold and bacteria and begins to break it down killing the affronting materials and pollutants on contact.
Ultraviolet light acts very similarly to humans getting a sunburn.