This manufacturer of large-diameter commercial fans has introduced Isis to the high-end residential market. Handmade from aircraft-grade aluminum, the fan comes in 8-, 9-, and 10-foot-diameter sizes and can be installed in spaces with ceilings as low as 12 feet. An aluminum finish is standard, but chestnut, black, white, and silver are also available. Cost: $3,000. Big Ass Fans. 877-244-3267. www.bigassfans.com.