A/C System Cleaner effectively cleans and disinfect all surfaces of the air conditioning system, cleans from moulds, pathogen micro-organisms and viruses. Eliminates unpleasant smells caused by such undesirable pathogens. Forms a protective film to permanently protect from bacterial recolonization and unpleasant smell. Applicable for automobile and household air conditioners. Improves the microclimate in the vehicle cabin or indoors.