How Does UV Light Work? | Indoor Air Purification

Indoor Air Purification


UV (ultraviolet) Light disinfection is now widely used in hospitals and laboratories to sanitize instruments and work surfaces and to prevent the spread of potentially lethal airborne infectious diseases.  The technology is used by the food industry to sterilize food before packaging and water treatment systems now incorporate UV light as a chemical-free means of purification.  According to the EPA, indoor air pollution is often five times worse than outdoor and represents a significant health risk.  Having a UV light will improve indoor air quality by sterilizing mold, bacteria, viruses, and allergens from the air as it cycles through the central air system.


UV light kills germs by giving them an intense “sunburn.”  It only affects things it shines on directly.  Nothing spreads into the home except clean air.  The germ-killing effect takes place inside the air system and is limited to that area.  There is no danger to any living thing in the home except microbes that are carried by the air into the central air system.  The product is intended to be on 24 hours a day.  Mold doesn’t stop growing, and cycling the UV light on and off would shorten the life of the UV lamp.  The germ-killing effect starts immediately with about 90% of surface microbes sterilized within the first few minutes and about 99.9% sterilized after the first 24 hours.


Give Verne & Ellsworth Hann a call at (216) 932-9755.  We can install a APCO Germicidal UV Light in your HVAC system.  Become a Hann Home Plan member and receive additional savings!

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