Internal air quality can be maintained by a combination of introducing ‘fresh’ air into the building, extracting ‘stale air’ and by filtration. Ventilation may be natural, mechanical, or mixed mode (a hybrid system).
Internal air quality can be maintained by a combination of introducing ‘fresh’ air into the building, extracting ‘stale air’ and by filtration. Ventilation may be natural, mechanical, or mixed mode (a hybrid system).