A healthy indoor environment is one which promotes the comfort, health, and well-being of the building users. Temperature and humidity are controlled within a comfort zone. Normal concentrations of respiratory gases, such as carbon dioxide, are maintained. The air is free of significant levels of contaminants and odors. Also contributing to a sense of well-being are comfortable levels of lighting and sound, appropriate ergonomic conditions, and job satisfaction. These factors are not air quality issues in the strict sense but, nevertheless, affect occupants’ perceptions of IAQ and, therefore, are important in a healthy indoor environment.1
Ever since the “Clean Air Act” was passed by the U.S. Congress in 1970, billions of dollars have been spent to control dangerous emissions outdoors. Yet, indoor air contaminants (especially in our office buildings) may pose the greatest threat to human health. Concentrations of harmful contaminants are much higher indoors than outdoors. As a rule of thumb, higher indoor air contaminant concentrations can mean higher health risks. According to a growing body of scientific evidence,serious acute and chronic health risks may very well result from inadequate indoor air quality (IAQ).1
Proper testing, analysis, and remediation of various pollutants in the home, and/or office building can result in improved health, productivity, and well-being.