Fan Power Calculator

Brake horsepower, motor sizing, and system efficiency

Inputs

Airflow (CFM)

Total Static Pressure (in.w.c.)

Fan Total Efficiency (%)

Motor Efficiency (%)

Drive Efficiency (%)

Voltage (V)

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)