A heating actuator is a device used to control the temperature of a heating system. It is usually installed in a central heating system and works by receiving signals from a thermostat or other temperature control device. The actuator then uses this signal to open or close valves, allowing hot water or steam to flow into the system. This in turn causes the temperature of the system to rise or fall, depending on the signal it receives. Heating actuators are essential components of any central heating system, as they are responsible for controlling the temperature of the system and ensuring it is kept at a comfortable level. They are usually made from durable materials such as brass or stainless steel, and are designed to last for many years.