Which statement best describes the purpose of an ECM in building operation?

• A. To reduce energy use of the building while maintaining or enhancing safety, comfort, and functionality
• B. To increase energy use for better comfort
• C. To replace all equipment with energy-efficient models
• D. To improve only occupant satisfaction

Answer: (A)

An ECM is a measure aimed at lowering building energy use without sacrificing essential performance. It focuses on changes that save energy while maintaining or improving safety, comfort, and functionality. This includes optimizing how systems operate (like HVAC controls, schedules, and setpoints), making targeted upgrades, or improving components that yield savings without degrading performance. The goal isn’t to increase energy use, nor to replace every system indiscriminately, nor to focus only on occupant satisfaction. Energy savings must come with preserved or enhanced safety and comfort for occupants.