Ceiling Fan Blade Span Comparator

Last updated 2026-08-22

Ceiling fan boxes and product pages are sized by blade span in inches, matched to a room size in square feet — but there's no federal rule or shared test standard behind that match, the way there now is for portable air conditioners. We fetched three brands' own current room-size guides directly and looked up what each one recommends for the same room.

Same room, a full size step apart At 200 sq ft, Hunter's own guide says a 52″ fan is enough ("up to 200 sq ft"). Big Ass Fans' own guide agrees a 52″ fan covers "up to 225" sq ft — so it still says yes at 200. Kichler's own guide puts 200 sq ft past its own "100-150 sq ft" bracket entirely, into "over 150 sq ft," where it recommends "56″ or larger" — a size step bigger than what the other two brands' own pages say the same room needs.

Kichler's own guide never names a size beyond "56″ or larger" Kichler's own page states no upper limit on its final bracket — "over 150 sq ft" always gets "56″ or larger," whether the room is 200 sq ft or 2,000. Hunter's own guide stops at "up to 400 sq ft," and Big Ass Fans' own guide goes further, naming an 84″ fan for rooms "up to 900" sq ft. For a very large room, two of these three brands' own pages give a bigger, more specific answer than the third.

Big Ass Fans has no row for a small room at all

Hunter's own guide has a row for rooms under 50 sq ft ("less than 29″"). Kichler's own guide has a row down to "90 sq ft or less" (15″–42″). Big Ass Fans' own guide starts at 44″ for "up to 144" sq ft and stops there — there is no smaller row on its own page. For a small room, Big Ass Fans' own guide recommends the same fan it would recommend for a room over twice the size, simply because it doesn't publish a smaller bracket.

What this does not do

It does not weigh CFM, blade pitch or motor quality. Big Ass Fans' own guide says this directly: "A larger ceiling fan running at a lower speed moves more air, more quietly" than a smaller one at full speed — blade span alone is a proxy, not the whole story, on the brands' own telling.
It does not adjust for ceiling height, room shape or airflow obstructions — none of the three pages cited here says whether its own square-footage figure already assumes an open floor plan.
It compares one general room-size table per brand, not every individual fan model's own listed airflow (CFM) figure.
It does not say which brand is "right." No shared external test standard for this was found on any of the three sites — only that the three brands' own in-house guidance disagrees.

Runs entirely in your browser. Nothing you type is sent anywhere. The portable AC BTU coverage comparator found the same "same room, different claimed coverage" shape in a market where a federal rule exists specifically to standardize the underlying figure. Ceiling fan blade span has no equivalent rule at all.