Gas Heat ESCO Practice Exam 2025 – 400 Free Practice Questions to Pass the Exam

Insulating ducts in unconditioned spaces is crucial due to its role in reducing temperature fluctuations and energy loss. When ducts carry heated or cooled air through areas that are not temperature-controlled—like attics, basements, or crawl spaces—there is a significant risk of the air within the ducts losing its heat in winter or gaining heat in summer. This temperature change can lead to inefficient heating and cooling systems, which may work harder to maintain the desired indoor temperature. As a result, energy consumption increases, leading to higher utility bills and increased wear and tear on the HVAC system. Moreover, proper insulation helps maintain consistent air temperature, which not only enhances comfort levels in the conditioned spaces but also optimizes the overall energy efficiency of the home.

Insulating ducts does not have a direct relationship with making the ducts lighter, preventing structural degradation, or inhibiting pest access, which are less impactful when considering the primary function of duct insulation.