Develop the thermal comfort survey after determining space programming, designing the mechanical system, and confirming compliance with IEQc7.1. It is best to customize the occupant survey for the building’s planned HVAC systems. Questions may be structured differently depending on whether you are assessing the performance of an evaporative cooling system, an in-floor radiant heating system, or a natural ventilation system. For example, a team may include questions about humidity levels for a project with an evaporative cooling system, while questions for a project with a natural ventilation system may be focused more on occupant satisfaction with airflow or controllability of the thermal environment.