![]() Air sterilization is also called an In-Duct UVC system, and with this method, the UV-C light disinfects the air as it cycles through the return ducts. UV light installations for HVAC come in two types coil sterilization and air sterilization. What Types of HVAC UV Light Systems Are Available? The CDC suggests using Ultraviolet Germicidal Irradiation (UVGI) as an adjunct air-cleaning measure, as it cannot replace HEPA filtration. This is important because the presence of particulates can shield a microorganism from UV light bombardment. As a matter of fact, the CDC recommends that a High Efficiency Particulate Air (HEPA)-level air filter be used to trap larger particulates 3. ![]() The correct placement and direction of the proper number of UVGi lights has as much bearing on effectiveness as the temperature and humidity levels within the home. A professional with experience in installing UVGi systems must keep a multitude of conditions in mind when installing a system 2. ![]() It is up to the homeowner to ensure that conditions are right, and installation is completed correctly by a qualified HVAC technician. Yes, if they are installed properly, and use the correct spectrum of UV light. Can UV Lights for HVAC Really Increase the Air Quality in My Home? The UVGi light operates within the UV-C spectrum, which is the effective wavelength spectrum for germicidal efficiency. The Ultraviolet Germicidal light (UVGi) can help eliminate many types of bacteria and viruses. But only certain UV lights can be used in air purification. This contamination often contributes to building-related diseases, like viral or bacterial infections, allergic rhinitis, asthma and hypersensitivity pneumonitis, according to the National Institute of Health. Contamination in HVAC units is a widespread issue that shouldn't be ignored. Yes, and this has been scientifically proven. HVAC UV Lights – 5 Common Questions and Their Answers Are Viruses and Bacteria Within My HVAC System a Health Concern? It is the UV-C section of the spectrum that has germicidal properties, with 253.7 nm being the ideal frequency level at which DNA absorbs the most UV light.
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