Assessing indoor air quality: Air conditioning

The quality of indoor air and how to assess it are increasingly raising concern, whether this is related to the efficiency of air-conditioning systems or of air cleaners. Air conditioning against high CO2 levels. According to a recent KPMG study conducted on adults, high CO2 levels in offices contribute to staff sickness and lower worker's concentration levels by 30%, they can also cause headaches, eye problems, respiratory problems and fatigue. The study found that at level above 1500 ppm, 79% of people reported feeling tired and at levels above 2000 ppm, nearly 2/3 rds reported having no level of concentration. Sick Building Syndrome (SBS) is the term used to describe such a set of symptoms and CO2 levels could be one of its major causes. Claims are that this can simply be solved with an efficient air-conditioning system and KPMG advises companies to inspect maintenance and service records of mechanical ventilation systems, implement indoor air-quality audits.