EC Fan

SUNON EC Axial fans run on high efficiency brushless DC motors which are driven directly from an AC power supply. Power consumption is reduced by approximately 80% compared with our conventional AC fans and shade pole motors. Furthermore, some of our EC fans also pass dust-proof, water-proof IP21, IP55 and IP68 rating. For safety, some of our EC fans also meet ATEX directive to make sure the security of commercial refrigerator and freezer application.

What is an electronically commutated fan? What makes it unique? Is it worth the investment? We will answer all of these questions and more as we discuss the advantages that EC fan motors bring to heating, ventilation, and air conditioning applications.

What Is an EC Fan?

An EC fan is a type of fan motor that uses brushless electronic commutation technology to control unit operation and speed. It’s capable of converting AC current to DC current, providing an efficient and reliable means of ventilation in both residential and commercial settings.

EC fans are an ideal replacement for AC fans because they can take an AC input, allow for added features such as Tach Output and PWM, and most importantly, are up to 80% more efficient.

What’s the Difference Between an AC Fan and EC Fan?

EC fans were designed as replacements for AC fans. AC fans can only receive AC current, while EC fans are able to receive AC current, then internally commutate the current to DC taking advantage of the added efficiency and features of a DC fan. EC fans are a plug-and-play alternative to AC fans without having to change your system’s current delivery from AC to DC.

What’s the Difference Between an EC Fan and DC Fan?

The major difference is the type of current that each fan runs on. DC fans can only receive a DC current. On the other hand, EC fans use AC current, with internal improvements that enable it to match the performance and functionality of a DC fan. 

Like DC motors, EC fan motors use electrical windings and permanent magnets to generate magnetic fields. The way they do so, however, is different; rather than achieving commutation mechanically, EC fans use on-board electronics and controls.

Key Benefits of EC Fans

EC fans are the preferred choice for heating, ventilation, and air conditioning applications, offering several key benefits:

Cost Savings

EC fans are an economical option because of their ability to operate on much lower currents than DC motors. They’re also more energy-efficient, saving money on running costs over the long term. Many EC fan motors have a built-in power factor correction feature that can further reduce their energy consumption.

Precision Control

EC fans allow for precise motor speed control and higher levels of stability than their DC counterparts. Their electronic commutation technology enables them to adjust the amount of power they draw depending on their speed, ensuring superior performance and accuracy.

Reduced Noise Levels

EC fans feature low-noise fan motors, allowing for quieter operation when compared to DC models. This is ideal for residential and commercial spaces that need to minimize noise levels for comfort or safety.

Improved Reliability

EC fans feature solid construction and long-lasting components, making them more reliable and less prone to breakdowns than other fan motors. This, in turn, can lead to fewer maintenance costs and less downtime.


EC fans are more efficient than AC fans.  An EC fan uses 75% to 80% less power than an equivalent AC fan solution by converting an AC signal into a DC output. 

An Ideal Solution for Ventilation Applications

EC fans are the ideal choice for any ventilation application that requires precise control, reliable operation, and lower energy consumption. Best of all, they’re available in a range of sizes and configurations to suit different spaces and requirements.

Explore Sunon’s extensive collection of EC products today, along with our AC fans and blowers and DC fans and blowers.

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EC Fan