page_title: Environmental control system
hierarchical_section_title: Environmental control system
caption_attribution_description: Cabin Pressure and Bleed Air Control Panels on a Boeing 737-800
context_page_description: The environmental control system of an aircraft provides air supply, thermal control and cabin pressurization for the crew and passengers. Avionics cooling, smoke detection, and fire suppression are also commonly considered part of an aircraft's environmental control system.
context_section_description: The environmental control system (ECS) of an aircraft provides air supply, thermal control and cabin pressurization for the crew and passengers. Avionics cooling, smoke detection, and fire suppression are also commonly considered part of an aircraft's environmental control system.
caption: Control panel for a Boeing 737-800 ECS
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