Features of Aosun Duct Fan
- Professional Duct Fan Manufacturer in China
- ISO, RoHS, and Intertek certified duct fans
- Made with high-grade metals and plastics, and special technical features that enable silent operations and convenient control
- Equipped with high-quality EC motor that promotes quiet performance
- Offers full customization of duct fan design based on your project requirements
- Has a wide customization options on material, connections, air volume, fan type, external pressure, efficiency etc.
Trusted Duct Fan Manufacturer in China
Tired of dealing with substandard duct fans that frustrates your customers? Worry no more, at Aosun, we got you. Aoson is a professional duct fan manufacturer that provides premium quality duct fans that would never fail you. With our advanced production equipment (CNC lathe, drilling machine, die casting machines, motor winding machine etc) , large factory, and reliable testing instruments, we assure you that our custom duct fans meet the industry-leading quality standards such as ISO, Intertek, and RoHS. At Aosun, you can choose from a variety of duct fan designs in our product catalog. Aside from that, we can also cater your businesses’ special needs with our customization services, giving you a variety of options on the structural components from the motor and fan blades to housing, driving systems etc. We also offer customization on the duct fan’s speed, efficiency, air volume, and air pressure.
Aosun’s duct fans are made from a variety of high quality plastic and metal. We offer different types of duct fans based on your desired airflow direction such as axial duct fan, centrifugal duct fan, and mixed flow duct fan. We also have them in a variety of shapes to fit in different duct configurations like circular, square, box-like, rectangular etc. We also offer a variety of control options, this includes a timer, humidistat, thermostat, and even an innovative smart controller.
Our duct fans are guaranteed to be durable, energy saving, efficient, and provide low noise operations perfect for both your indoor and outdoor projects, may it be for residential, commercial, or industrial.
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AOSUN’s centrifugal inline duct fan delivers strong airflow with a durable metal housing built for long-lasting performance.
Our double-speed inline duct fan offers efficient ventilation control, ideal for both light and heavy airflow needs.
AOSUN’s PP duct fan features a corrosion-resistant build, perfect for humid or chemical-prone environments.
Our quiet circular duct fan ensures smooth and silent air circulation, ideal for homes and offices.
AOSUN’s wall-mounted axial flow duct fan combines powerful ventilation with easy installation for versatile use.
Our compact multi-inlet duct fan offers efficient multi-point ventilation for tight or small-scale spaces.
AOSUN’s in-line duct fan includes smart WiFi control, allowing you to adjust airflow conveniently through an app.
Our air circulation duct axial fan provides steady airflow and reliable cooling performance for any ventilation system.
What Is the Duct Fan?
A duct fan is a mechanical ventilation device installed inside a duct. It draws air into a space and exhausts it out of the space, helping to regulate temperature and humidity and improve air quality. Aosun offers a wide range of duct fans that you can use in a variety of industries, such as residential, commercial, warehouses, agriculture, and more.
Advantages of Duct Fan
- No Influence on the Appearance: Unlike ordinary fans, duct fans are installed inside the ducts, not exposed to the outside, and don’t require holes in the walls or roof for installation. If you are looking for the right ventilation solution for an upscale building design, duct fans are the right fit.
- Low Noise: On the one hand, the duct fan itself can keep the operating noise low. It is ideal for use in sound-sensitive locations such as offices, hotels, and hospitals. On the other hand, longer contact distances and ducts reduce the noise impact in the space.
- All-Weather Operation: Duct fans achieve less energy loss and maximise energy efficiency. They can provide you with a round-the-clock operation without failing. If required, you can also choose ducted fans with adjustable efficiency for flexible use.
- Flexible Installation: You can customise different duct sizes and choose from a variety of fan shapes (e.g., round, rectangular, and square) to fit your ducts perfectly. You can use duct fans in ducts where space is at a premium, or you can have larger duct fans for larger ventilation needs.
Functions of Duct Fan
- Regulate the Temperature: Duct fans can generate a strong airflow and drive the air to flow in the ducts, making the air exchange inside and outside the space. It allows cool air to circulate evenly throughout the space, regulating the temperature of the entire space. This effectively reduces the problem of uneven temperatures in the space.
- Regulate humidity: You can install a ducted fan in a humid space, which can effectively dehumidify and keep the space dry to avoid mould growth.
- Improve air quality: In addition to regulating temperature and humidity, a ducted fan removes smoke and dust from a space. It also draws in fresh air to replace dirty air, maintaining excellent air quality in the space. In addition, you can choose to add some fresheners or deodorisers to remove bad smells from the space.
Types of Duct Fan
Duct Fans with Different Operating Principles
- Axial Duct Fans: Axial fans use propeller-like axial impellers rather than blades to move air. Axial fans are quieter and more reliable.
- Centrifugal Duct Fans: Centrifugal fans are fitted with blades that rotate to draw air in from the centre and out of the fan, drawing in fresh air to improve the indoor environment. The centrifugal force gives them greater suction capacity and higher air transport efficiency. You can use it in applications where there is a high level of resistance, and it can move large amounts of air quickly.
- Mixed-flow inline duct fan: This fan combines the advantages of centrifugal and axial flow fans. Not only can it withstand the transport of large amounts of air and resist some resistance, but it also maintains quiet operation.
- Duct Booster Fans: Ordinary duct fans struggle to work efficiently in systems with long ducts and high resistance. A duct booster fan can solve this problem for you. It pressurises the airflow to deliver air further and stronger.
Duct Fans with Different Power Transmission Methods
- AC Duct Fans and DC Duct Fans: Both AC duct fans and DC duct fans rely on AC power. However, AC duct fans can be driven directly, while DC duct fans require a converter for more efficient ventilation. You can adjust their air speed by controlling the voltage.
- EC Duct Fans: EC duct fans use PWM control for superior durability and lower energy loss.
- Battery Duct Fans: If your usage scenario is mobile, a battery duct fan that does not use a fixed power source is more suitable for your project. But it is not as durable and requires you to check and replace the batteries in time for a longer life.
- Belt-Driven Duct Fans: Belt-driven duct fans transmit power from the motor through a belt that drives the fan. This design combines flexibility in regulation with safety.
- Direct Drive Duct Fans: Direct drive duct fans are also powered by an electric motor. But unlike a belt-driven duct fan, it connects the motor directly to the fan without the need for a fan drive. Thanks to this, you can minimise energy loss.
Duct Fans in Different Shapes
Round, square, and rectangular duct fans exist to fit the ventilation needs of your differently shaped ducts. You can therefore use duct fans directly into your ductwork without the need to re-route the ducts.
It is important to note that rectangular duct fans are not the same as square duct fans. Rectangular duct fans are much more flexible in their application, as you can install them both horizontally and vertically and maintain them easily. Square duct fans are more structurally stable than rectangular ones. You can install a square duct fan in a confined space.
Key Components of Duct Fans
- Exterior Vents: Vents connect to ducts and are installed in walls or ceilings and serve as entry and exit points for air. You need to decide the size of the vent according to the size of the duct to get the best air transport efficiency.
- Motor: The motor powers the rotation of the fan and ensures the stable operation of the duct fan. Also, some duct fans are battery-operated, allowing you to use them in scenarios where there is no fixed power source.
- Fan: The fan is the main part of the duct fan. It comes with many blades and draws in fresh air and removes air from the space by rotating.
- Ducting: Ducting is used to transport air, providing a channel for efficiently drawing in and removing air. It comes in different shapes to suit your specific application requirements. To maximise performance, the ducting layout should ideally be straight.
Application of Duct Fan
- Commercial: The use of ducted fans in crowded places enhances air ventilation and prevents oxygen deprivation, making your premises more comfortable. You can also pair them with filters to remove odours and thus get good air quality.
- Warehouses: Duct fans can be operated around the clock for uninterrupted air circulation to maintain the quality of the products in your warehouse. This effectively avoids damage and reduces your costly losses.
- Home: Providing ducted fans for humid environments such as bathrooms and kitchens not only enhances ventilation but also prevents mould growth.
- Agriculture: You can use ducted fans in grow tents and greenhouses. It intelligently regulates temperature and humidity to form the best growing environment for your plants. In addition, plants benefit from their round-the-clock air circulation, making growth faster and healthier.
Duct fans and exhaust fans are both used to promote air circulation and improve the air environment. The difference between them lies in their use. Exhaust fans are usually mounted directly to walls and ceilings and exhaust indoor air directly to the outdoors. Duct fans, on the other hand, are used in spaces that are farther away from the outdoors. These spaces use ducts to transport air, and duct fans are installed inside the ducts to improve air transport efficiency.
Duct length affects the airflow performance of a duct fan. The longer the duct or the more elbows it has, the greater the airflow resistance. If you have a long duct run, we recommend choosing a duct fan with higher static pressure to overcome the additional resistance in the ductwork.It can ensure the air reaches the end effectively.
Most duct fans support continuous operation, suitable for HVAC systems, commercial ventilation and other scenarios. We recommend you choose a duct fan with a high-quality motor to ensure stable and reliable long-term operation. In addition, regular cleaning and maintenance can help maintain optimal airflow performance and extend the service life of the duct fan.
You should ideally clean your air duct fan every 3 years, and this cycle needs to be shorter if your space is prone to contamination due to poor environmental conditions. If it’s obvious to you that the efficiency of your air shut-off fan is all over the place, or that there’s not a lot of air circulation, it could be because too much dust is affecting the fan’s performance. If there is a musty smell around the ducts, or you even see mould in the air supply, you should have the fan ducts cleaned immediately. Failure to do so will affect the performance and longevity of your air shut-off fan and even negatively impact the air in your space.
Generally, duct fans operate at relatively low noise levels. Since the fan is typically installed inside the ceiling or ventilation duct, the building structure itself blocks some of the sound. In addition, high-quality duct fans often feature dynamically balanced impellers and stable motor designs, which help ensure smooth operation and minimize vibration. We recommend you choose a duct fan with a dynamically balanced impeller, it can effectively reduce operating noise.
Most duct fans support horizontal and vertical installation. The key is to ensure correct airflow direction and tight duct connection. You can choose the installation method based on on-site duct layout and space, and seal it well during installation. After installation, it is necessary to ensure that the duct fan bracket is firmly fixed, so as to prevent the machine from vibrating and falling.
Modern duct fans are more energy-efficient. The duct fan precisely exhausts stale air or supplies fresh air through ducts, preventing the waste of cool or warm air. They use high-efficiency motors and optimized impellers to reduce power consumption while maintaining stable airflow. We recommend you prioritize energy-efficient duct fans, they cut energy costs in long-term use.
Most duct fans support speed regulation, you can adjust airflow via an external speed controller. We recommend you adjust the speed by actual needs, it boosts ventilation flexibility, saves energy and reduces noise. The availability of speed control may vary depending on the specific duct fan model.
Duct fans can be used with various filtration systems, which improve air circulation and purification effects. If you want to purify the air while ventilating, you can add a filter mesh in the duct (like activated carbon or pre-filters). However, you should pay attention to adding a filter increases airflow resistance. We suggest sizing up your fan slightly when purchasing, so the airflow remains sufficient even with the filter installed. You can choose a matching filter and fan combination based on the purification needs of your scenario.
First, you should check the room size to determine how much airflow you need. Second, check the usage environment. If it’s a greasy place like a kitchen, you must choose a stainless steel housing of the duct fan for easy cleaning. For normal rooms, ABS plastic is lightweight and cost-effective. Third, check the installation space, measure your ceiling height to ensure the duct fan fits before buying.
