What Are Duct Type Fans? Types, Applications, and Selection Guide
What Are Duct Type Fans?
Types, Application Areas, and Choosing the Right Fan
Duct type fans are fans installed inside ventilation ducts and used to exhaust contaminated air or transport fresh air. Thanks to their quiet operation, balanced air distribution, and aesthetic solutions, they are essential components of modern ventilation systems.
In this article, we clearly and simply explain what duct type fans are, what types are available, where they are used, and how to choose the right duct fan.
What Do Duct Type Fans Do?
Duct type fans:
Exhaust contaminated air through duct systems
Transport fresh air along the duct line
Ensure continuous and balanced operation of the ventilation system
👉 They are especially used to control airflow in ducted ventilation systems.
Advantages of Duct Type Fans
Quiet operation: Since the fan is installed inside the duct, noise is minimized in the occupied space
Balanced air distribution: Air is evenly distributed through diffusers and grilles
Aesthetic solution: The fan remains hidden; only grilles are visible
Wide range of applications: Suitable for many areas, from offices to kitchens
Where Are Duct Type Fans Used?
Duct type fans are widely used in both commercial and industrial applications:
Restaurant and café kitchens
Offices and business centers
Shopping malls
Hotels
Hospitals
Schools
Workshops and manufacturing facilities
Residential projects
Types of Duct Type Fans
Round Duct Type Fans
Designed to be compatible with round duct systems, these fans offer easy installation and a compact structure. They are commonly used in small and medium-sized ventilation systems.
Rectangular Duct Type Fans
Suitable for projects requiring higher airflow rates. They are preferred in long duct runs and large-volume spaces.
External Rotor (Out-Motor) Duct Type Fans
The motor is located outside the airflow. This provides safer and longer-lasting operation when exhausting oily, dirty, or hot air. Ideal for restaurant kitchens and hood systems.
Explosion-Proof (Exproof) Duct Type Fans
Designed for environments containing explosive or flammable gases. Their spark-free construction ensures high safety and makes them suitable for chemical plants, paint shops, and gas-filled environments.
What to Consider When Choosing a Duct Type Fan
Airflow rate (m³/h): The capacity must match the ventilation requirements of the area
Duct size: The fan dimensions must be fully compatible with the duct dimensions
Static pressure: If there are long ducts, bends, or filters, a fan capable of providing sufficient pressure should be selected
Motor type: External motor fans for oily air; explosion-proof motors for hazardous environments
The Right Duct Type Fan for Efficient Ventilation
Duct type fans are key components of professional ventilation systems thanks to their quiet operation, balanced air distribution, and aesthetic design. Selecting the right fan according to the project ensures long-lasting, efficient, and trouble-free system performance.