Nate Core Practice Test 2025 – Comprehensive Exam Prep

Dunnage refers to the supports or materials used to secure equipment at elevation within HVACR systems. These supports are essential for ensuring that equipment, such as air handling units or ductwork, is held securely in place to prevent movement that could lead to mechanical failures or inefficiencies in the system's operation. Properly designed dunnage can help maintain the structural integrity of the system, particularly in rooftop installations or elevated platforms where equipment may be subject to environmental stressors.

In contrast, while insulation materials are critical for energy efficiency in HVAC systems, they do not qualify as dunnage. Tools for equipment maintenance play a different role and do not pertain to the structural support of equipment. Systems that regulate airflow are part of the HVACR's functionality but do not relate to the physical support or elevation of equipment, which is the primary concern of dunnage. This distinction is key for understanding how different components within HVACR systems operate together.