Direct Answer
Use an axial fan for suitable high-flow, low-resistance duties; use a centrifugal fan when the system needs more pressure through ducts, filters or equipment.
Suitable For
- Equipment designers
- Ventilation buyers
- Maintenance teams replacing a fan
Not Suitable For
Fan comparison
| Factor | Axial fan | Centrifugal fan |
|---|---|---|
| Air direction | Parallel to shaft | Radial then discharged |
| Typical pressure | Lower | Higher |
| Duct resistance | Best when limited | Better for higher resistance |
| Envelope | Often compact depth | Requires housing and outlet space |
Step-by-step Process
- Define the duty point
- Check system resistance
- Compare installation geometry
- Review noise and control needs
- Confirm the curve before replacement
Buyer Checklist
- Required airflow
- Static pressure
- Existing opening
- Duct connection
- Noise target
- Motor supply
Information Needed for Quotation
- Current model or photo
- Duty point
- Dimensions
- Voltage/frequency
- Application
Frequently Asked Questions
What is the main decision in this axial fan vs centrifugal fan?
Use an axial fan for suitable high-flow, low-resistance duties; use a centrifugal fan when the system needs more pressure through ducts, filters or equipment.
What should be documented before approval?
Required airflow; Static pressure; Existing opening; Duct connection; Noise target.
Can this checklist replace product or legal compliance review?
No. Use it to organize the commercial and technical review, then confirm market-specific compliance with qualified parties where required.
Related Pages
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