Big Ass Fans are, as their name suggests, a producer of very large fans. They’re used everywhere from dairy barns to art galleries to outdoor public installations like Wendy, HWKN’s star-shaped pavilion for MoMA PS1’s summer Warm Up series. They also make residential models, like Haiku, the latest product in their line up. Once you get over the eye roll-inducing slogan—Haiku: Poetry in Motion—it’s a really incredible product. According to Energy Star it’s the world’s most efficient residential ceiling fan, and even exceeds their efficiency requirements by 450 to 750 percent. Whereas most fans use 90 to 100 watts, the Haiku uses just two to 30 watts, costing an average of $5 per year.