Indoor air quality is not
necessarily a concept that is easy to understand or define. It is a
constantly changing interaction of a complex set of factors. Each of these
factors must be considered when looking for an indoor air quality problem.
IAQ professionals use the four listed below as a basis for every
sound investigative approach. Without considering each of the following
factors, simple solutions to the problems at hand could be easily missed.
Source - There is a source
of contamination or discomfort indoors, outdoors, or within the mechanical
systems of the building.
- The HVAC system is not able to control existing air contaminants and ensure
thermal comfort (temperature and humidity conditions that are comfortable
for most occupants). ...more.
Pathways - One or more
pollutant pathways connect the pollutant source to the occupants and a
driving force exists to move pollutants along the pathways).
Occupants - Building
occupants are present and are affected enough to raise indoor air quality