One feature to consider when you choose a fan is the type of motor it has: its performance and energy usage depend on it.
There are two types of motors: alternating current (AC) and direct current (DC). The big difference between them is simply energy usage. DC motors are characterised by low power consumption, quiet operation and precise speed control.
This type of engine is also known as a direct current motor. The difference between the DC and AC is that DC always generates the same voltage, while AC varies. As such, plug sockets do not always receive the same voltage. It oscillates within a certain range.
The first ceiling fan with a DC motor appeared in 2009 at the hands of the American company Emerson Electrics. Lower costs led to further work on these motors, although they were initially very costly, and the result is effective models at a competitive price.
The main advantages of this engine are:
Energy usage is 70% lower than conventional fans. At an average speed of 50rpm, it uses about 3W.
It is very quick to start up, accelerate, decelerate and stop.
Speed control is very precise, and so a wide range of speeds (six) are typically offered.
They offer a very low minimum rotation speed.
They weigh less because the motor is lighter and that makes installation easy.
They don’t heat up as much as conventional fans and they are usually more durable
Moreover, most of these fans can be put into reverse and can be activated by remote control, without the need to use the controls on the fan itself.