Which step is NOT part of an indoor air quality (IAQ) assessment?

Installing a new HVAC system is not typically considered part of an indoor air quality (IAQ) assessment. An IAQ assessment focuses on identifying existing air quality issues, assessing the current air conditions, and understanding what potential hazards may affect the health and comfort of occupants in a space.

In a proper IAQ assessment, conducting a walkthrough allows for visual observations of potential sources of air quality issues, such as mold, dust, or inadequate ventilation. Talking to workers aids in gathering subjective experiences regarding air quality, as they can provide insight into symptoms or concerns related to their work environment. Monitoring hazards involves checking for specific pollutants or contaminants to measure their levels and assess compliance with health standards.

In contrast, while upgrading or installing new HVAC systems may indeed contribute to improving indoor air quality, it is an action that comes after the assessment rather than a step within the assessment itself. The assessment aims to evaluate current conditions and identify any necessary changes, including whether an HVAC upgrade is warranted based on the findings.