Environmental control systems (ECSs) are one of the most essential infrastructures aboard an aircraft, regulating air pressure, ventilation, temperature, and humidity to create stable and comfortable conditions. Heating is a central element within this broader network, contributing to cabin comfort while protecting avionics, anti-icing equipment, and other subsystems that depend on controlled thermal conditions. Since these systems are not intended to work independently, this blog will explore some of the different heating technologies used on aircraft and how they interact with an ECS.