Yes, a ceiling fan running at a slower speed consumes less power (electricity units) compared to running at a higher speed. The power consumption of a fan is directly related to its speed. When a fan operates at a higher speed, it requires more electrical energy to maintain that speed and generate the necessary airflow.
The power consumption of an electrical device like a ceiling fan is measured in watts (W) and can be calculated using the formula:
Power (Watts) = Voltage (Volts) × Current (Amperes)
When the fan operates at a slower speed, it draws less current from the electrical supply, resulting in lower power consumption. As a result, running the fan at a slower speed will save electricity and reduce your energy consumption.
Some modern ceiling fans also come with different speed settings, which allow you to adjust the speed according to your comfort and the room's requirements. Lowering the fan's speed can be an effective way to save energy and reduce electricity costs, especially in moderate weather conditions when you don't need maximum airflow.