Hospitals use UV lights to help sterilize medical equipment and keep the air clean for patients. UV lights are also used to sterilize food-production environments. At home, Ultraviolet Lights are particularly helpful for people who are very sensitive to allergens. It should be noted that UV lights don't combat allergens such as pet dander or dust. That's what air filters are for! However, they're meant to kill living biological growths that cause respiratory problems. Together with high quality air filters (which should be changed out regularly), you'll enjoy very clean indoor air!
Having Ultra Violet lights installed in your HVAC system is not super cheap. But it’s relatively inexpensive (if that makes any sense). They do require routine maintenance. But it’s worth the price if you want to breathe clean air. You can have just one UV light installed near the air handler for coil sterilization if you want a cheap option. However, this option is only effective at keeping the evaporator coil mold-free. It's not effective at killing mold and bacteria throughout your whole HVAC system.
For full air sterilization, you should have UV lights installed throughout your entire AC system. It’s a more expensive alternative, but it sterilizes your entire home. A full system UV light setup will help kill biological growth that breeds anywhere throughout your whole HVAC system, including your ductwork. So if anybody in your home has respiratory issues, we recommend getting UV lights in your entire system for maximum air purification.
Ultraviolet lights are great for killing mold and improving indoor air quality. However, you should also take other measures for best results. These include getting your ductwork cleaned; sealing your ducts so they are airtight; installing high MERV air filters; and regular air conditioner maintenance.
There are several reasons why hospitals have UV lights in their AC systems. As previously mentioned, mold and bacteria are a huge concern in humid climates like Florida. Bacterial growth in HVAC systems shouldn’t be ignored. Mold contamination can lead to severe respiratory problems such as asthma and pneumonitis. That's why hospitals use UV lights in their AC systems, to keep the air as sterile as possible for patients.
Another concern for those willing to invest in Ultraviolet light systems is whether it's worth the money. It is, as long as the installation is done correctly. That means only a qualified HVAC technician should install UV lights. Some of the factors qualified technicians have to consider include intensity of the UV lamps; the proper amount of lamps; the placement and direction of the lamps; as well as surrounding temperatures and humidity levels of the building.