Is it a requirement for inspectors to activate thermostatically operated fans during a check of mechanical ventilation systems?

Inspectors are not required to activate thermostatically operated fans during the inspection of mechanical ventilation systems. This requirement stems from the nature of an inspection, which is typically a visual and non-invasive evaluation of a property's components. Activating such fans could potentially lead to unforeseen issues, such as causing an electrical malfunction or impacting the system's operation in a way that may create safety concerns or discomfort.

Moreover, inspectors are generally expected to report on the condition and functionality of these systems based on their observations and tests that do not involve active operation. While it is beneficial to assess the functionality of mechanical systems, the activation of these fans is not considered a necessary part of the inspection process. The focus should be on ensuring that all components are present, in good condition, and functioning as intended without the need for interaction that could lead to complications.