Traditional AC motors are used in most fans. To control AC motors, you can use standard controllers, which do not reduce energy costs and make a buzzing noise when dimmed down. Or a stepped controller can be used, which steps between pre-set voltage settings. Both of these controllers are very old fashioned. They do not save any money when turned down to a lower speed and clunk between each setting.
EC motors are much better. They convert the input electricity to a direct current, ‘DC’, and have built-in microchips in the motor for easier and precise control. An EC motor only uses the power it needs and is more efficient. It is also quieter and does not buzz when controlled. Overall, EC fans are more than 50% more efficient than AC fans.
That’ll be why more and more growers are choosing EC fans! One of the best features of the Revolution range is the sealed body. Why is this so important?
Revolution fans have a completely sealed body to class C of EN 12237:2003, which sounds very boring, but what it means is that when connected to a carbon filter, there is no way the odour within your grow area can escape through your ventilation system. There is no point using a carbon filter if all the dirty air is sucked past it through the body of your fan.
Nicely put. So how are the fans built exactly?
Systemair invested millions of euros designing the Revolution fan motors and casing. Both the impellors (which are attached to the motor) and the matching guide vanes (in the body casing of the fan), have been designed to work together to produce the highest pressure airflow per a Watt of electricity.
Also, the Revolution fan is one of the first fans to have directional air flow. This is where the air flow from the fan travels down the ducting a lot more efficiently, is quieter and produces less pressure against the fan.
All of the fans are built in Germany. The one-piece body and impellor are made by Systemair. The blades are balanced twice, to make sure they don’t vibrate or make any unwanted sound. The motors are made by EBM Papst, who are a technology partner of the Mercedes formula one team. These are not cheap fans, but they out perform all competition.