The power consumption of an electric fan is related to the structure and size of its motor (blade diameter). For the same size fan, capacitor-type fans consume less power than shaded-pole fans. For fans with the same motor structure, larger fans convert electrical energy into household energy more efficiently than smaller fans, but in terms of total power consumption, larger fans consume more. Therefore, you should choose a fan based on your family's needs.
China classifies electric fans into energy efficiency levels from 1 to 5, with level 1 offering the best energy savings. DC motors are more energy efficient and quieter than traditional AC motors.
The power required for different speed settings of the same electric fan varies. For example, for a 400mm table fan, the power requirements for each setting are as follows:
Speed 1: 60-65 watts; Speed 2: 43-50 watts; Speed 3: 38-40 watts; Speed 4: 33-35 watts.
Therefore, you don't necessarily need to use the first speed setting in daily use to save electricity. Using a timer switch can help you automatically turn off the power when you sleep or leave, reducing power waste.
