ELI5: Explain Like I'm 5

Chartered Institution of Building Services Engineers

A Chartered Institution of Building Services Engineers (CIBSE) is an organisation that helps professional engineers who work with the systems that keep buildings healthy, safe and comfortable. These systems include things like electricity, heating, air-conditioning, lights and ventilation. CIBSE trains engineers and provides advice to help them do their jobs better. They also set standards for how these systems should be used, built and maintained. This helps to keep buildings safe and comfortable for everyone.