Mixed Flow Inline Fans Explained: How They Work & Where to Use Them
A mixed flow inline fan sits between the two classic duct fan designs — axial and centrifugal — combining traits of both to fill a specific gap: more pressure capability than a standard axial fan, in a more compact, inline package than a centrifugal fan needs. Jaideo Automation supplies the Mixed Flow Inline Fan and the Silent Mixed Flow Inline Fan.
How a Mixed Flow Fan Works
In a purely axial fan, air moves straight through in line with the fan shaft. In a purely centrifugal fan, air enters axially and is thrown out radially, requiring a right-angle housing. A mixed flow fan’s impeller blades are angled to move air in a path that’s part axial, part radial — the air still exits roughly in line with the duct, like an axial fan, but the impeller geometry gives it meaningfully more static pressure capability than a standard axial design.
Why Choose Mixed Flow Over Axial or Centrifugal
- More static pressure than axial — handles longer duct runs and more resistance without stepping up to a centrifugal housing
- More compact than centrifugal — fits inline in round or compatible ductwork without the space needed for a centrifugal fan’s right-angle casing
- Simpler ducting — installs directly in a straight duct run like other inline fans, no transition pieces needed
Standard vs Silent Mixed Flow Fans
The Silent Mixed Flow Inline Fan range adds acoustic insulation and vibration isolation for noise-sensitive installations — offices, residential ventilation, hospitality — where the standard mixed flow fan’s noise output would be a problem.
Applications
- Toilet and bathroom exhaust ventilation with longer duct runs
- Kitchen extract systems needing more pressure than axial fans provide
- General mechanical ventilation in commercial buildings
- Noise-sensitive installations using the silent variant
How This Compares to Other Inline Fans
For duct runs needing even more static pressure, or for round vs rectangular duct compatibility, see our Circular vs Rectangular Inline Duct Fans guide. For the full comparison across every fan type Jaideo supplies, see our Industrial Fan Selection Guide.
Frequently Asked Questions
What is a mixed flow inline fan?
A mixed flow inline fan uses impeller blades angled to move air in a path that is part axial and part radial, giving it more static pressure capability than a standard axial fan while remaining compact enough to install inline in ductwork.
When should I choose a mixed flow fan instead of an axial fan?
A mixed flow fan is the better choice when the duct run or resistance exceeds what a standard axial fan can handle, without needing to step up to a bulkier centrifugal fan housing.
What is the difference between a standard and silent mixed flow fan?
A silent mixed flow fan adds acoustic insulation and vibration isolation for noise-sensitive installations, while the standard version is used where noise is less of a constraint.