Editing Environmental control system (section)

{{Short description|Aircraft system which maintains internal pressurization, climate, air supply, and more}}
{{About|systems on aircraft|systems on spacecraft|Life-support system}}
[[File:Cabin pressure and Bleed air control panels on a Boeing 737-800.jpg|thumb|200px|Control panel for a Boeing 737-800 ECS]]

In [[aeronautics]], an '''environmental control system''' ('''ECS''') of an [[aircraft]] is an essential component which provides air supply, [[Air conditioning|thermal control]] and [[cabin pressurization]] for the [[Aircrew|crew]] and passengers. Additional functions include the [[Thermal management (electronics)|cooling]] of [[avionics]], [[smoke detection]], and [[Fire suppression system|fire suppression]].