How UV Light Air Purifiers Keep You Breathing Easy

Ultraviolet light has been used in hospitals for years to kill pathogens like bacteria and viruses as part of the sterilization process. By using a similar technique, a UV light air purifier can help to keep the air in your home healthier, which is especially useful in humid areas like Southwest Florida. There are three different types of UV light air purifiers, but they all function in a similar fashion.


UV Light Air Purifier Types

The most common UV-based air purifiers are:

  • Air handler-mounted purifiers: One or more UV lights is mounted inside the air handler cabinet, illuminating the filter, the evaporator coil and the interior surface of the air handler.
  • Duct-mounted purifiers: A special system including UV lights is mounted in the duct system, typically on the return side.
  • Standalone systems: These are self-contained air purifiers that can be used in any room, up to the rated capacity of the system.

How They Work

The UV light inside the air purifier shines on any microorganisms located on nearby surfaces or in the air stream, within a certain distance from the UV source. Any viruses, bacteria or other microorganisms that are exposed to the light for more than about half a second will have their RNA or DNA degraded by the UV light, killing them.

Certain types of UV-based air purifiers work better than others, because they allow the microorganisms to be exposed to the UV light for a longer period. Generally, air handler-based systems or well-designed standalone systems produce better air quality than a duct-mounted system, which sometimes has air moving too quickly to treat effectively. A properly-designed system, however, can overcome this.

UV light can also break down odors and volatile organic compounds, leaving the air fresh. Moreover, it can reduce A/C maintenance by keeping the evaporator coil cleaner and preventing algae growth that clogs the condensate drain.

To learn more about the benefits of a UV light air purifier, talk to our team at Conditioned Air. We serve Southwest Florida, including the communities between Bradenton and Marco Island.

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