Which system is primarily responsible for adjusting the cabin temperature?

The Environmental Control System (ECS) is primarily responsible for adjusting the cabin temperature in an aircraft. The ECS works by regulating the flow of air within the cabin, controlling temperature and pressure to maintain a comfortable environment for passengers and crew. This system utilizes a combination of air conditioning units, heat exchangers, and ventilation to manage both heating and cooling effectively.

The ECS plays a crucial role in ensuring that the temperature remains within a specified range during different phases of flight, and it can adapt to external atmospheric conditions. This capability is vital for maintaining passenger comfort and safety, as well as ensuring optimal performance of onboard equipment that may be sensitive to temperature fluctuations.