Treating tuberculosis with ultraviolet light won Niels Finsen the Nobel Prize in Medicine in 1903. Since then, ultraviolet lights have been used for a wide range of uses such as for sterilizing water, germicidal lamps in food establishments, sterilizing hospitals, as well as curing nail polish faster! Among other benefits, UV lights in the HVAC system can destroy mold and other microbe growth. The basics of UV lights in your HVAC system is what we at Air Pure Air Duct Cleaning would like to discuss today.
Types of UV Light Sanitizers
Coil sterilization and air sterilization are the 2 types of UV lights designed for HAVC systems.
Air Sterilization: Being designed to cycle with the air handler blower, the air sterilization is a complete UV light unit that is installed in the return air duct to sterilize moving air. To provide maximum efficiency, there are quite a few top-rated products.
Coil Sterilization: Being installed inside the return air duct, sterilizing the air handler coil is a stick-type light. In addition to being the more affordable option, the most common type of HVAC UV light, the UV light runs 24/7 as it is a coil sterilization.
Scientific Studies Showing UV Lights Really Work in HVAC Systems!
Both studies of commercial HVAC system and hospital applications validate the effectiveness of UV lights eliminating mold and bacteria.
Commercial HVAC system study: When testing the effectiveness for reducing fungal contamination within air-handling unit with the germicidal UV radiation after 4 months of functioning in a commercial office building, the fungal levels in control AHUs, air handler units, were significantly lower following UV operation
Hospital study: Researchers at Duke University Medical Center, in 2012, used ultraviolet radiation (UV-C) by reducing the number of bacteria by more than 97% with the ultraviolet light effective in hospital infection control to nearly eliminate drug-resistant bacteria in 50 hospital room.
Do UV Lights Really Make Indoor Air Quality Better?
There is additional basics you need to apply to improve the effectiveness when taking advantage of the UV lighting effects for killing mold, bacteria, germs and odors.
1) Make certain to install high-MERV filters for HVAC system designed for the higher static pressure of better filtration.
2) Install UV light in HVAC system.
3) Ducts need to be installed in conditioned space.
4) Seal all joints with mastic and ensure air-tight ducts.
5) Deal off the air ducts during any renovation or construction.
6) Changing filters monthly and cleaning the coil annually and conduct other regular maintenance.
What are the Benefits of UV Lighting in an HVAC System?
– Decrease smell and odor productions.
– Mold and bacteria management.
– Eliminate VOCs.
– When compared to dry climates, the humid climates have an increase in effectiveness.
– To reduce colds and flus, germs are not re-circulated by HVAC system.
– Clogs in condensate drain lines are reduced by preventing algae growth.