How do fungus, mould and bacteria get into a HVAC system?

Fungus, mould and bacteria proliferate where there is moisture and where there is a source of nutrients. Within a buildings HVAC system, the damp surfaces of heat exchange coils and the duct-laden air filters provide an ideal environment for a wide range of bacteria and fungi to thrive. Since building air conditioning system typically rely on a combination of fresh air from outside and air that is re-circulated within the building, it is impossible to prevent spores, bacteria and various microorganisms from entering the indoor environment.

A thorough cleaning of the ductwork and other critical HVAC components can help eliminate the food sources needed to sustain the growth of microbial contaminants and improve the useful life and efficiency of your HVAC system. More.

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