Study of microbial growth on HVAC media filters

Microbial aerosols captured by HVAC filters can colonize those filters in appropriate conditions, especially when HVAC system is stopped. The risk of microbial aerosol release downstream filters is increased after a stopping period. After filters contamination, the growth of microorganisms onto filters and measurements of microbial release from filters was studied at Ecole des Mines de Nantes, after latency in specific conditions in humidity and temperature for different media filters.