Fan motors are electric motors driving mechanical fans to provide airflow for engine cooling or cabin climate control. Typically used in radiator cooling systems and HVAC blower assemblies, these motors convert electrical energy into rotational force. Designs range from brushed DC motors to brushless DC (BLDC) variants for improved efficiency and longevity. Common features include multi-speed operation controlled via PWM signals and integrated thermal protection to prevent overheating. Housings are generally plastic or aluminum and sealed to resist moisture and debris.