Proper ventilation improves indoor air quality.
Buildings constructed in the 1970s often achieved energy efficiency at the cost of adequate fresh air, leading to unhealthy working conditions. Through a program of preventive maintenance, inspections and attention to employee concerns, most indoor air-quality problems can be avoided.
Wolter
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D016902:Air Pollution, Indoor / Q000517:prevention & control*; D008284:Maintenance and Engineering, Hospital / Q000592:standards*; D016273:Occupational Exposure / Q000517:prevention & control*; D014481:United States; D014691:Ventilation / Q000592:standards*