Which issue is commonly addressed during an energy audit?

Energy audits primarily focus on evaluating and enhancing the energy efficiency of a building. This includes examining systems related to heating, cooling, and insulation, as these elements are critical in determining how efficiently a building uses energy. By identifying areas where energy is wasted or where improvements can be made, such as better insulation, upgraded HVAC systems, or more efficient windows, an energy audit aims to reduce energy consumption and costs while improving overall comfort.

While indoor air quality improvement is essential, it typically falls under different assessments and is not the main focus of an energy audit. Electrical wiring upgrades may be necessary for safety and performance reasons, but they aren't directly related to the energy efficiency of a building's thermal envelope or climate control systems. Aesthetic renovations are concerned with the visual and design aspects of a space, rather than its energy performance or efficiency. Thus, the emphasis of an energy audit aligns most closely with energy efficiency in heating, cooling, and insulation.