| Axial Fan | General ventilation, warehouses, workshops, and heat removal | 5,000–120,000 m³/h | 50–500 Pa | 0.37–15 kW | Requires a clear inlet and outlet path; wall or roof mounting may require structural support and weather protection | Clean blades and guards; inspect bearings, fasteners, vibration, and electrical connections | 8–15 years under suitable operating conditions | Low to medium purchase and installation cost; economical for high airflow at low pressure |
| Centrifugal Fan | Ducted systems, dust collection, process ventilation, and high-resistance systems | 2,000–80,000 m³/h | 500–3,000 Pa | 0.75–75 kW | Needs a correctly sized base, aligned ductwork, access clearance, and flexible connectors to limit vibration transfer | Inspect impeller balance, belts or couplings, bearings, casing, filters, and duct pressure losses | 10–20 years with proper alignment and lubrication | Medium initial cost; may deliver lower operating cost in high-pressure applications |
| Mixed-Flow Fan | Compact ventilation systems requiring moderate airflow and pressure | 3,000–50,000 m³/h | 300–1,500 Pa | 0.55–30 kW | Requires stable mounting, adequate service access, and duct transitions designed to minimize turbulence | Check impeller cleanliness, bearings, vibration, fasteners, and motor temperature | 8–15 years | Medium total cost when space and moderate pressure requirements are important |
| Roof Extractor Fan | Building exhaust, heat removal, odor control, and general industrial ventilation | 2,000–40,000 m³/h | 100–800 Pa | 0.25–15 kW | Requires roof curb compatibility, waterproof flashing, safe roof access, and protection against wind and weather | Inspect weather seals, roof curb, motor, bearings, guards, and debris accumulation | 8–15 years depending on exposure and corrosion protection | Low to medium installation cost can increase when roof reinforcement or difficult access is required |
| High-Volume Low-Speed Fan | Large warehouses, distribution centers, aircraft hangars, and livestock buildings | 20,000–150,000 m³/h | 20–150 Pa | 0.75–5.5 kW | Requires verified roof or ceiling load capacity, fall protection, adequate clearance, and a controlled air distribution layout | Inspect blades, suspension cables, gearbox or direct-drive motor, controls, and mounting hardware | 10–20 years with scheduled inspections | Low operating cost for large open spaces; effectiveness depends on ceiling height and layout |
| Explosion-Protected Fan | Areas with flammable gases, vapors, combustible dust, or hazardous process atmospheres | 1,000–40,000 m³/h | 200–2,000 Pa | 0.37–30 kW | Requires hazardous-area classification, compliant electrical equipment, bonding and grounding, and installation by qualified personnel | Documented inspections, grounding checks, corrosion control, bearing checks, and verification of protective devices | 10–20 years when operated within certified limits | High initial cost; safety compliance and risk reduction are primary selection factors |
| Portable Industrial Fan | Temporary ventilation, confined-space work, maintenance areas, and emergency air movement | 1,000–20,000 m³/h | 100–1,000 Pa | 0.25–7.5 kW | Requires stable placement, protected power supply, suitable extension leads, and safe routing of flexible ducting | Clean guards and impellers; inspect wheels, cables, switches, duct connections, and impact damage | 5–10 years depending on mobility and operating environment | Medium to high operating cost if used continuously; flexible for changing work areas |
