With its residential Haiku model, Big Ass Fans changed every convention established by a century of ceiling-fan design. That hot, loud, electromagnet-driven AC motor is now a cool, quiet, permanently magnetized DC drive that's 80 percent more efficient. Instead of flat blades, three airfoils slice through the air. Whoosh mode, one of 10 settings, mimics nature to increase the cooling effect: It varies wind speed by precisely 0.47 hertz, so that it feels more like a breeze on the skin.
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机译：凭借其住宅Haiku模型，Big Ass Fans改变了百年吊扇设计确立的所有惯例。如今，那种热，响亮，由电磁驱动的交流电动机是一种凉爽，安静，永久磁化的直流电动机，效率提高了80％。代替扁平叶片，三个机翼在空中切成薄片。 Whoosh模式是10种设置之一，它模仿自然环境以提高散热效果：它的风速精确地变化了0.47赫兹，因此感觉更像是微风。
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