When performing an energy audit, what is typically assessed for efficiency?

When performing an energy audit, assessing heating and cooling systems is crucial for determining a building's energy efficiency. These systems are significant contributors to energy consumption in multifamily buildings. The efficiency of these systems affects overall energy use, operating costs, and occupant comfort.

During the audit, factors such as the age and condition of the heating and cooling equipment, whether they are properly sized for the space, their energy efficiency ratings (like SEER or AFUE), and their maintenance history are evaluated. By identifying inefficiencies or outdated systems, recommendations can be made for upgrades or repairs that can lead to significant energy savings, improved performance, and enhanced comfort for residents.

While building orientation, window types, and roof materials also play roles in energy efficiency—affecting things like passive solar heating and cooling through natural ventilation—they do not directly determine the performance or efficiency of the most energy-intensive systems within the building as the heating and cooling systems do. Thus, focusing on these systems during an energy audit is essential for a comprehensive understanding of a building's energy performance.