Poor indoor air quality iaq has been tied to symptoms like headaches fatigue trouble concentrating and irritation of the eyes nose throat and lungs also some specific diseases have been linked to specific air contaminants or indoor environments like asthma with damp indoor environments. Indoor air quality in commercial and institutional buildings3 1the numbers in parentheses refer to specific entries in the last sources of indoor air pollution may include indoor air quality in commercial and institutional buildings iaq problems 6 indoor air iaq problems. Indoor air quality in commercial and institutional buildings 15 well designed constructed and maintained building envelopes are critical to the prevention and control of excess moisture and microbial growth by avoiding thermal bridges and preventing intrusion by liquid or vapor phase water. The focus of this class is on commercial and institutional buildings and excludes single family homes and industrial buildings lesson 1 components objective identify the major components of commercial hvac systems understand the role they play and how they can affect indoor air quality
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