So what is the "right" fan for your room? The biggest one that fits the space. You want a fan that's going to move the most air around with the least amount of effort, and a fan with a larger diameter can move more air than a smaller one at the same speed.
Here are some guidelines for fan sizes based on room size from the American Lighting Association:
The moral of the story? Ceiling fans may be unsightly to most. But if you're serious about cooling down and saving dough, you need to go big.
Read More: American Lighting Association
(Images: 1. Tara Bellucci / Clytie & Claudia's Storied Pieces House Tour, 2. Shutterstock)