A blower fan assembly (50, 250, 450, 650) comprising: a shaft (52, 452, 660) rotatable about an axis; a fan assembly operatively coupled to the shaft, the fan assembly including: a first fan stage (54, 254, 454, 654) including a first housing section (112, 312, 512, 612) having a first plurality of stationary vanes (116, 316, 516, 616) and a first fan (100, 300, 500, 600) having a first plurality of blades (108, 508) extending radially outwardly from a first hub (104, 504); a second fan stage (54, 254, 454, 654) coupled to the first fan stage and including a second housing section (112, 312, 512, 612) having a second plurality of stationary vanes (116, 316, 516, 616) and a second fan (100, 300, 500, 600) having a second plurality of blades (108, 508) extending radially outwardly from a second hub (104, 504), the second fan stage being nonidentical to the first fan stage; a tapered air outlet (62, 462) disposed downstream of the fan assembly; wherein a diameter of the first hub is smaller than a diameter of the second hub; a length of each blade of the first plurality of blades is greater than a length of each blade of the second plurality of blades; and the first plurality of blades includes a first quantity of blades and the second plurality of blades includes a second quantity of blades that is more than the first quantity. a shaft (52, 452, 660) rotatable about an axis; a fan assembly operatively coupled to the shaft, the fan assembly including: a first fan stage (54, 254, 454, 654) including a first housing section (112, 312, 512, 612) having a first plurality of stationary vanes (116, 316, 516, 616) and a first fan (100, 300, 500, 600) having a first plurality of blades (108, 508) extending radially outwardly from a first hub (104, 504); a second fan stage (54, 254, 454, 654) coupled to the first fan stage and including a second housing section (112, 312, 512, 612) having a second plurality of stationary vanes (116, 316, 516, 616) and a second fan (100, 300, 500, 600) having a second plurality of blades (108, 508) extending radially outwardly from a second hub (104, 504), the second fan stage being nonidentical to the first fan stage; a first fan stage (54, 254, 454, 654) including a first housing section (112, 312, 512, 612) having a first plurality of stationary vanes (116, 316, 516, 616) and a first fan (100, 300, 500, 600) having a first plurality of blades (108, 508) extending radially outwardly from a first hub (104, 504); a second fan stage (54, 254, 454, 654) coupled to the first fan stage and including a second housing section (112, 312, 512, 612) having a second plurality of stationary vanes (116, 316, 516, 616) and a second fan (100, 300, 500, 600) having a second plurality of blades (108, 508) extending radially outwardly from a second hub (104, 504), the second fan stage being nonidentical to the first fan stage; a tapered air outlet (62, 462) disposed downstream of the fan assembly; wherein a diameter of the first hub is smaller than a diameter of the second hub; a length of each blade of the first plurality of blades is greater than a length of each blade of the second plurality of blades; and the first plurality of blades includes a first quantity of blades and the second plurality of blades includes a second quantity of blades that is more than the first quantity.