Overview: Conducting an IAQ Investigation

Initial Walk-Through

Collecting Additional Information

Collecting Information About Occupant Complaints

Using the Occupant Data

Collecting Information About the HVAC System

Using the HVAC System Data

Collecting Information About Pollutant Pathways and Driving Forces

Using Pollutant Pathway Data

Collecting Information on Pollutant Sources

Using Pollutant Source Data

Sampling Air for Contaminants and Indicators

Complaints Due to Conditions Other Than Poor Air Quality

Forming and Testing Hypotheses