Dirt is built up in ventilation and air conditioning systems over time and these must be cleaned regularly in order to be efficient and have a long life. The cleaning of systems also affects [...]
Systems need to be turned on before people arrive at the building, or before peak occupancy hours. It must be ensured that the outdoor air intakes are open and that there are no sources of [...]
The following indicators are good signs for determining if there are indoor air quality problems due to ventilation and air conditioning systems: Odour coming from fans. Fibreglass or dirt [...]
Ventilation and air conditioning systems can introduce outdoor pollutants; in themselves, they can become a source of pollutants. Through their ducts they allow pollutants to circulate from one [...]
