Fan Power Calculator

Brake horsepower, motor sizing, and system efficiency
Inputs
Results
Air Horsepower
—
AHP (theoretical)
Brake Horsepower
—
BHP (shaft)
Motor Size
—
HP (next standard)
Input Power
—
kW
Full Load Amps
—
A (estimated)
System Efficiency
—
% overall (wire-to-air)
Specific Fan Power
—
W/CFM
Annual Energy
—
kWh/yr (8,760 hrs)
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This calculator handles one step. AIM Works runs the complete MEP design workflow — thermal load calculations, duct & pipe networks, equipment selection, code compliance, and an AI design assistant — in one tool.

  • ✓  ASHRAE 62.1 ventilation + CLTD/CLF/RTS load methods
  • ✓  Darcy-Weisbach pipe & duct network solvers
  • ✓  ASHRAE 90.1 / IMC / NFPA compliance checks
  • ✓  20 free AI design messages included in trial
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