EC Inline Fan Manufacturer in China
Are your customers frustrated with ventilation fans that are too noisy? The AOSUN EC Inline Fan can help you with that. Our EC Inline Fan is equipped with a PWM controlled EC motor, it delivers strong airflow with low noise and minimal power consumption, ensuring long service life and energy savings. It is built with reinforced plastic housing and ABS blades for lasting quality. It also features versatility, as it comes in duct sizes from 100mm to 200mm (4-8 inches) and offers models such as MF100-A(S), MF150-A(S), MF200-A(S). For added convenience, the removable impeller and motor block allows easy maintenance, while the integrated terminal box ensures quick installation.
What sets AOSUN apart is our OEM/ODM customization service from branding and labeling to speed control options, casing materials, and packaging, we tailor solutions to match your market requirements. Additionally, it can be applied to growrooms, greenhouse, basements, and kitchen. Our EC Inline Fan ensures efficient, quiet, and customizable ventilation, making it a trusted choice for global distributors and wholesalers.
Contact us today!






Why Choose AOSUN as your EC Inline Fan Supplier?
- AOSUN EC inline fan is tested under international certifications such as CE, SAA, and RoHS
- EC inline fan is designed for high airflow with low noise technology
- Available in multiple duct sizes such as 100mm, 150mm, and 200mm
- Built with a PWM controlled EC motors, ensuring quite operations
- Integrated terminal box and mounting friendly design setup for installers and user
- AOSUN is trusted by retailers, distributors, and long term partners.

- Technical Parameter of CF Inline Fan
- Technical Parameter of DF Inline Fan
| Product Parameters | CF3 | CF4 | CF6 | CF-8 |
| Pipe Diameter | 73mm | 73mm | 147mm | 196mm |
| Air | 75CFM | 75CFM | 345CFM | 364CFM |
| Speed | 11400RPM | 11400RPM | 3000RPM | 2200RPM |
| Power | 26W | 26W | 19W | 42W |
| Noise | 28dB-A | 28dB-A | 36dB-A | 28dB-A |
| Product Weight | 0.9kg | 0.9kg | 0.6kg | 2.6kg |
| Gross Weight | 1.3kg | 1.3kg | 1kg | 2.6kg |
| Packaging Size | 115*135*80mm | 115*135*80mm | 500*415*460mm | 195*260*201mm |
| Input Voltage | AC110-240V | AC110-240V | AC110-240V | AC110-240V |
| Control Method | Voltage Regulation | Voltage Regulation | Voltage Regulation | Voltage Regulation |
| Product Parameters | DF100MS | DF150MS | DF200-A | DF200-M |
| Pipe Diameter | 98mm | 146mm | 196mm | 196mm |
| Air Flow | 212CFM | 402CFM | 553CFM | 553CFM |
| Speed | 2800RPM | 2800RPM | 2000RPM | 2000RPM |
| Power | 35W | 70W | 70W | 70W |
| Noise | 28dB-A | 34dB-A | 42dB-A | 42dB-A |
| Product Weight | 1.9kg | 2.4kg | 3.6kg | 3.4kg |
| Gross Weight | 2.4kg | 3.0kg | 4.4kg | 4.2kg |
| Packaging Size | 330*245*220mm | 335*265*235mm | 350*305*280mm | 350*305*280mm |
| Input Voltage | AC110-240V | AC110-240V | AC110-240V | AC110-240V |
| Control Method | External Knob Speed Adjustment | External Knob Speed Adjustment | External Intelligent Controller | External Knob Speed Adjustment |
What is EC Inline Fan
Aosun’s EC inline fan is a type of inline fan that possesses an EC motor, widely used in commercial and industrial applications. It combines the EC motor with a ducted ventilation system and is installed in the duct. The EC inline fan achieves high efficiency and precise air control with the help of built-in electronics, which is the biggest feature of EC inline fans. If you are looking for a fan with these demands, it may be an ideal choice.
How the EC Inline Fan Works

The EC motor is a type of permanent magnet brushless motor, which combines the control advantages of a DC motor and the reliable structure of an AC motor. Different from a traditional AC motor, the EC motor directly controls magnetic fields and electronic direction according to an electronic controller, making the rotor spin. Impellers are driven by the EC motor, forming a stable air flow in the duct. Based on actual requirements, the speed, airflow volume, and static pressure can also be adjusted.
Advantages of EC Inline Fan
Save Energy
High energy efficiency is one of the most significant advantages of the EC inline fan. The energy grade of an EC motor reaches IE4 or higher, which is one of the highest international energy standards. EC motor has a unique feature of brushless, changing alternating current to direct current. It typically controls the rotation speed with the electronic controller, making most of the electronic energy directly used in the driving function. Thereby reduces the energy consumption and saves on electric costs.
Smart System
EC inline fans support various control methods and are suitable for automated applications. It can work together with different control systems, allowing 0-10V, PWM, and other signal control. The EC inline fan can achieve stepless speed regulation from the lowest speed to the highest speed. Based on the actual condition of temperature, pressure, or humidity, you can also adjust the airflow volume to a suitable level.
Low Noise
The EC inline fan keeps a low rotational speed for most of the time, which can significantly reduce operation noise. Compared to an ordinary motor, the EC motor does not need mechanical friction when changing direction. This will also decrease the noise level. If your project is sensitive to noise, then the EC inline fan can meet the demand.
High Reliability
High-strength materials are typically used to produce the EC inline fan with integrated structural design, giving the fan good reliability and durability. The EC motor does not have wear-prone components like carbon brushes, which can reduce failures or maintenance requirements caused by carbon brush wear. In addition, the EC inline fan possesses high operation efficiency and low heat generation, preventing overheating issues and extending the service life.
EC Inline Fan Applications

Industrial Production
In the industrial production process, especially the welding or grinding work, it is easy to generate metal dust or smoke particles. The EC inline fan has precise control to expel these polluted ducts in a certain direction, maintaining the cleanliness of the production environment. Its stepless speed regulation function adapts to different production processes. It will adjust the airflow or rotational speed based on the duct contents, reducing energy consumption.
Commercial Setting
Commercial buildings such as offices, restaurants, and hotels generally use central conditioning fresh air systems for ventilation. EC inline fans can be combined with the system, controlling airflow based on indoor CO₂ levels, temperature, and humidity. The EC inline fan also allows a low rotational speed at night without human activity. It will help you improve the automation level of your project, reducing maintenance and manual costs.
Data Center Ventilation
Data centers or server rooms generally require continuous ventilation and cooling, maintaining normal operation of equipment and avoiding overheating failures. The EC inline fan installs a temperature sensor, which will start up for high airflow when the equipment is too hot. With the temperature decreasing, the EC inline fan can gradually reduce its rotational speed to achieve high energy efficiency.
Agricultural Growing
The EC inline fan is also widely used in the agricultural cultivation sector, such as growrooms, greenhouses, and other growing facilities. Its multifunctional sensor can adjust the air circulation according to the different production requirements of crops. It also controls the CO₂ and humidity level, helping you achieve the high-yielding goal. At the same time, the energy-saving feature of EC inline fans will reduce the electronic cost in the agricultural growing process.
How to Select EC Inline Fan

Different applications have significantly different requirements on airflow, power, static pressure, and more. When selecting the EC inline fan, you should consider the actual demands and core parameters, avoiding issues that the fan cannot meet your requirements. The following are some suggestions for your reference.
- Key Parameters
Airflow volume and static pressure are two basic parameters of an EC inline fan, which directly determine the ventilation effect. The airflow can be calculated by the space volume and the ventilation rate. While required static pressure is connected to the duct length, diameter, and fitting resistance. If the duct is long and complex, the static pressure of the EC inline fan also needs to be high. You can provide these parameters to suppliers for accurate solutions.
- Energy Efficiency and Certification
You can choose a suitable energy grade that satisfies actual requirements. In general, fans with IE4 or higher grade of energy offer high performance in saving energy. Although the initial cost of them may be a bit high, they will provide big benefits for long-term usage. You should also consider the certification, select a safe EC inline fan to prevent compliance issues.
- Installation Environment
Before choosing the EC inline fan, installation spaces and environments should also be considered. According to the actual condition of your project, Aosun provides fans with various materials and protection ratings. For example, if your project has demands on waterproofing, EC inline fans will offer IP65 protection grade to avoid motor ingress water.
- After-sale Service
It is better to choose a reliable brand and supplier. They can provide good after-sales service, ensuring quick response when the fan is damaged and avoiding quality issues.
The maintenance regulation and cost of EC inline fans are significantly lower than AC fans. EC fans have a special design of brushless fans, which are difficult to wear. While the AC fan requires more mechanical wear to achieve reversing. The EC fan offers higher reliability than AC fans due to its built-in protection module.
No. The electronic control module is typically independent of the entire EC inline fan. If there is damage or a failure occurs on it, you can just repair this module or replace its components. This convenient maintenance method decreases the overall costs and reduces additional loss caused by downtime.
Aosun’s EC inline fans meet the electromagnetic compatibility(EMC) standards to avoid harmful effects on other devices. The internal circuitry possesses strict filtering and shielding measures, ensuring the electromagnetic interference generated in the operation process can be controlled. If your project has high requirements, the EC inline fan will offer additional EMC protection solutions.
EC inline fans are quieter than ordinary exhaust fans because of below three reasons.
Blade design
EC inline fans usually use multiple blades (such as 5 or 7 blades) and the blades are in the same horizontal line to reduce the noise caused by air cutting and collision. Ordinary fan blades are distributed in a petal shape, resulting in louder noise when cutting air.
Material improvement
EC inline fans use good materials such as copper and iron to reduce the noise caused by blade vibration due to heat during high-speed rotation. Ordinary fans often use plastic, which has poor thermal conductivity and is prone to vibration and noise.
Intelligent speed control technology
EC inline fans achieve constant speed through DC motors or brushless motors.
No, an EC (or “quiet”) inline fan is not that super expensive.
It really depends on what you need: how much airflow (CFM), how quiet you want it, and whether you need extra features like a speed/temperature controller.You can find decent ones in the ~$60–$150 range.
Yes, EC inline fans can be used outdoors, but only if they are rated for outdoor locations.Find the labels such as “weatherproof,” “outdoor rated” or have IP rating e.g IP44, IP55, IP65.
The core components of the EC inline fan use special durable materials.The shell is made of galvanized sheet which can prevent corrosion and deformation.And the impeller adopts die-cast aluminum alloy with high rigidity, light weight and good heat dissipation.As for the bearings,ball bearings are generally used with double-sided sealing,which can resist wear,resist high temperatures and support continuous operation,effectively extending service life.
There are two main improvements in the design of EC inline fan impellers.
1. More mature wing blade structure.
Most high-efficiency EC inline fans now use blades with wing like cross-sectionscan effectively suppress turbulence, reduce drag,more smoother,especially in high cleanliness and high static pressure scenarios.
2.The application of lightweight materials.
High strength aluminum and fiber composite materials are gradually replacing traditional carbon steel structures, making impellers lighter.
They can acheive higher rotational speed,lower energy consumption,smaller mechanical load.
The mainly difference between EC inline fans and axial flow fans is in the air output mode and applicable scenarios. Axial flow fans is good at transporting large amounts of air over long distances,mostly used in industrial ventilation and duct air supply applications.
EC inline fans can provide higher pressure and stronger air speed,suitable effective air circulation and cooling in rooms, equipment chambers.
Yes, EC inline fans are versatile, energy-efficient and suitable for both residential and commercial applications.
For homes, they operate quietly and efficiently, meet for moisture and odor removal in bathrooms, kitchens or whole-house ventilation.
For commercial spaces, their stable airflow, adjustable speed control and durability which make them perfect for shops, offices and small workshops,which provide reliable ventilation performance.



