Air handling
Fans, Blowers & Air Movement replacement guide
Replace axial and centrifugal fans, blowers, impellers, propellers, fan wheels, motors, bearings, and ventilation components using airflow, pressure, rotation, geometry, and duty.
Evidence boundary. Air-moving replacements must match the fan curve and geometry, not just diameter or horsepower. Confirm rotation, wheel arrangement, speed, pressure, material, and motor details.
Items covered01 · 12 component types
- Axial fans
- Centrifugal fans
- Regenerative blowers
- Roof exhaust fans
- Cabinet cooling fans
- Electronics cooling fans
- Process blowers
- Fan impellers
- Blower wheels
- Fan motors
- Louvers
- Air dampers
What to capture02
Manufacturer, model, wheel or propeller designation, and rotationRecord this before searching for a substitute.
Airflow, static pressure, speed, and operating pointRecord this before searching for a substitute.
Wheel diameter, width, bore, hub, blade geometry, and arrangementRecord this before searching for a substitute.
Motor power, frame, voltage, drive, and rotationRecord this before searching for a substitute.
Temperature, material, spark resistance, contamination, and installationRecord this before searching for a substitute.
What must match03
Airflow and pressure at the duty pointConfirm it against the original equipment, duty, and source documentation.
Wheel or propeller geometry and rotationConfirm it against the original equipment, duty, and source documentation.
Motor, speed, drive, and powerConfirm it against the original equipment, duty, and source documentation.
Shaft, bore, hub, housing, and mountingConfirm it against the original equipment, duty, and source documentation.
Temperature, material, noise, contamination, and safetyConfirm it against the original equipment, duty, and source documentation.
Common searches04
What fan replaces this model?
How do I identify a replacement blower wheel?
What fan motor fits this assembly?
Can a fan with the same diameter replace mine?
Authoritative starting points05