What kind of anti-ice system do most commercial jets utilize?

Most commercial jets utilize bleed air from the engines for their anti-ice systems. This method involves harnessing hot air that is extracted from the engine's compressor stage, which is then directed to critical areas of the aircraft that are prone to ice accumulation, such as the wing leading edges and engine inlets. The high temperature of the bleed air effectively melts any ice formation, ensuring optimal aerodynamic performance and engine efficiency during flight in icy conditions.

This system is favored in commercial aviation due to its reliability and integration with the aircraft's existing engine systems. The use of bleed air is particularly beneficial because it provides a continuous supply of heated air, allowing for proactive ice prevention and management without requiring additional onboard equipment or solutions. In contrast, other options like electric heating or radiant heat systems are less commonly used in large aircraft due to limitations in power or heating capacity. While chemical de-icing fluids might be employed for ground operations, they are not typically used as a primary method for in-flight ice prevention.