The installation of a UV germicidal air purifier system is an effective way to target air within a space and expose it to UV light. This extra energy, much more than visible light, can alter the molecules that absorb it, and DNA is particularly vulnerable to these changes. UV light bombards the microorganisms around the UV lamp and damages the DNA they need to survive. In residential applications, a UV light (commonly referred to as a “bar light”) is usually installed near the coils to prevent mold or bacteria from growing.
This UV light can also disinfect air that passes through it, eliminating organic growth on the surface of the coil and housing, as well as bacteria, mold, fungi, and some gases in the air without obstructing airflow. A study conducted by Duke University found that UV light eliminated more than 97 percent of drug-resistant bacteria from the air in hospital rooms. It can also combat volatile organic compounds (VOCs) found in cleaners and repellents, as well as airborne bioaerosols, such as pollen and pet dander. UV lights don't physically “trap” contaminants, so you still need an air filtration system to capture dust, fibers, and other particles from your home's air supply.
Air purifiers with UV light are usually a combination of a forced air system and another filter (such as a HEPA filter). Another study measured “significantly lower” levels of fungi in the air conditioning system of a commercial establishment after four months of operation with a UV lamp. For your safety, do not look directly at UV light when it is activated, as it can cause serious eye damage. The installation of commercial UV HVAC lamps for air purification is one of the improvements of Statewide Conditioning Inc., and Service Experts Heating & Air Conditioning offers a range of air quality solutions, including UV lights for HVAC systems.
The intense energy of UV light can even cause VOCs to release gases more quickly than usual or turn them into more dangerous substances. Installing UV light for air purification and disinfection is an effective way to promote health and improve the efficiency of heating, ventilation and air conditioning (HVAC). To actually destroy mold spores and bacteria, you would need high levels of UV light and much longer exposure times. Electromagnetic radiation takes many forms, from visible light to radio waves and ultraviolet light.
