How UVC works

Installed in HVAC systems, high-output UVC Emitters™ from Steril-Aire provide a safe, effective method for microbial control.

How UVC works, E-Co

How UVC works, E-Co
The cellular DNA of microorganisms like bacteria absorbs the energy from the UVC light, causing damage to their DNA structure, leaving the bacteria unable to produce proteins or replicate.

Ultraviolet Germicidal Irradiation

Ultraviolet germicidal irradiation is a disinfection method that uses short-wavelength ultraviolet light to kill or inactivate microorganisms by destroying nucleic acids and disrupting their DNA, leaving them unable to perform vital cellular functions

The UVC (a synonym for UVGI) energy eradicates surface biofilm/mould, as well as airborne viruses and bacteria, to improve indoor air quality (IAQ) and help reduce employee absenteeism and improve productivity.

The devices provide continuous air and surface cleaning without chemicals and without producing ozone or other secondary contaminants.

How UVC works, E-Co

VC in HVAC continuously kills bio-films and stop them from re-growing
on the cooling coil heat exchange plates. This reduces resistance to airflow & significantly increases thermal efficiency resulting in energy savings of 10-20% .

All HVAC systems run at significant reduced efficiency for two reasons.


 1.   Bio-films grow on heat exchange plates in the cooling coils causing a restriction to airflow & a loss in thermal efficiency. Your HVAC system works harder to maintain the desired temperature.

How UVC works, E-Co

Bio-films are five or more times more insulative than scale. In addition, the limit of human visibility is 30 microns, so in a majority of cases, the coil looks clean even if it isn’t. Because of this, bio-films on coil surfaces are often not seen until they get to 50 or even 150 microns thick. Since they are somewhat sticky, they attract dirt and other small particulates that further impinge on the coils during its operation.

2.    Manual chemical cleaning is largely ineffective at stopping bio-film buildup + manual water pressure cleaning damages structurally weak components leading to increased inefficiencies in HVAC performance/life.