A heater fan switch is a device used to control the operation of a fan heater. It can adjust the fan speed or turn the fan on and off. These switches are essential for maintaining a comfortable and safe environment, as they help distribute heat evenly and prevent the heater from overheating. They often include clear markings and user-friendly controls, making them easy to use. Suitable for both residential and commercial applications, these switches contribute to more efficient energy use and extended heater lifespan.