Certified Energy Auditor Practice Exam 2025 – 400 Free Practice Questions to Pass the Exam

A building with a low-performance envelope typically exhibits characteristics that negatively impact energy efficiency, operational costs, and occupant comfort.

Such an envelope often comprises poor insulation, inadequate sealing, and substandard window performance, leading to significant energy losses. This means that the heating and cooling systems must work harder to maintain comfortable temperatures, resulting in high operational costs. Along with these financial implications, a low-performance envelope can create uncomfortable indoor environments due to drafts, temperature fluctuations, and inconsistent humidity levels, further detracting from occupant comfort.

Since these aspects are interconnected, a building with a low-performance envelope inherently has low energy efficiency, higher operational costs, and reduced comfort for occupants, making it accurate to conclude that all of these factors are key characteristics of such a building.