Working on some solar designs for my cabin. It occurred to me my wife requires a ceiling fan most of the year. I didn't find any recent threads here about fans. A little bit of research and of course there are some huge differences in cfm per watt, even in energy star rated fans.
So far 2 of the best I've found are
Shop Harbor Breeze Slinger 72-in Brushed Nickel Downrod Mount Ceiling Fan with Light Kit and Remote (9-Blade) ENERGY STAR at Lowes.com
8885 cfm for 30 watts on high speed, retailing for $299
Shop Harbor Breeze Platinum Kingsbury 70-in Oil Rubbed Bronze Downrod Mount Ceiling Fan with Light Kit and Remote Control ENERGY STAR at Lowes.com
8286 cfm for 29 watt retailing for $209
For comparison the energy star fan looking most similar to mine requires 62 watts to move 5497 cfm. Where I could find medium and low speed numbers all fans are more efficient at lower speeds