Air Conditioning systems, and especially A.H.U. (Air Handling Unit), are the perfect microcosm for growth and distribution of microbial organisms, pathogens, spores, moulds, etc. Air recirculation, temperature fluctuations and humidity allow them to combine with each other in complex ways and settle all over surfaces inside the AC system in the form of an unpleasant biofilm. This biofilm adheres particularly in between the fins of heat exchangers (coils), it settles in water collection tanks and clog the filters inside ducts. A biofilm less than 0.5 mm can reduce system efficiency up to 40%.

Light Progress Ultraviolet Germicidal Devices can solve all HVAC hygiene and efficiency problems.