What is a common consequence of temperature fluctuations for ductwork?

Temperature fluctuations in ductwork lead to expansion and contraction due to the thermal properties of the materials used in HVAC systems, typically metals like steel and aluminum. When the temperature rises, the metal expands; conversely, when temperatures drop, it contracts. This process can cause various issues, including bending, warping, or even creating gaps at joints, which can impact the efficiency of the heating and cooling system.

Understanding this key concept is essential for HVAC technicians, as it highlights the importance of proper material selection and installation techniques to accommodate for these natural physical changes. Enhancing airflow and structural integrity are not direct consequences of temperature fluctuations; rather, they relate to the overall design and construction of the duct system. Greater noise generation can occur but is not specifically a consequence of expansion and contraction alone. Therefore, recognizing the impact of temperature changes on ductwork is critical for maintaining system performance and ensuring long-term durability.