Nate Core Practice Test 2026 – Comprehensive Exam Prep

The common tool used to measure air pressure in HVAC ducts is the manometer. A manometer is specifically designed to measure the pressure of gases, including air, and can indicate both positive and negative pressure in the ductwork. This is essential for HVAC professionals as it helps ensure that systems are operating correctly and efficiently. By allowing for accurate measurements, a manometer helps technicians diagnose issues such as airflow resistance and inefficient system performance.

While a barometer is used to measure atmospheric pressure outside and is not suited for the specific conditions within HVAC ducts, and voltmeters measure electrical voltage rather than pressure, these tools serve different purposes and are not applicable in this context. Similarly, a thermometer measures temperature, which is also unrelated to pressure measurements in ducts. The targeted functionality of a manometer makes it the right choice for assessing air pressure in HVAC systems.