Certified Energy Auditor Practice Exam 2025 – All-in-One Resource to Achieve Exam Success!

A drift gauge measures pressure, particularly in contexts related to building performance and energy auditing. Drift gauges are used to assess the pressure differential in various environments, such as in HVAC systems or during air leakage testing in structures. By providing precise measurements of pressure changes, they help in identifying potential issues related to airflow, insulation effectiveness, and overall energy efficiency in buildings.

Understanding pressure differentials is crucial because they can affect how air moves through a space, influencing heating and cooling loads and the overall comfort of the environment. This is particularly important when designing or retrofitting energy-efficient systems, as maintaining appropriate pressure levels can enhance system performance and longevity.

While temperature, humidity, and flow rate are vital factors in energy auditing, they are measured using different specialized instruments, such as thermometers for temperature, hygrometers for humidity, and flow meters for flow rate assessments. Thus, knowing that a drift gauge specifically relates to pressure helps clarify its unique role in energy auditing.