To calculate the moment of inertia of a single inlet centrifugal fan, one can use specific formulas based on the fan's geometry. For fans with complex shapes, it is recommended to consult the manufacturer for precise data. If manufacturer data is unavailable, a general procedure involves breaking down the fan into simpler geometric shapes and calculating their individual moments of inertia before summing them. Accurate calculations are crucial for understanding the fan's dynamic behavior. Seeking expert guidance or using simulation software may also enhance accuracy in these calculations.