What is a good CFM/W for a ceiling fan?

By Oliver Harris · Published October 27, 2026 · Data: EPA ENERGY STAR certified list as of October 27, 2026

Across the 587 standard downrod fans on the certified list, the median CFM/W is 210, and the middle 80 percent score between 134 and 313. Blade span moves that line a long way: the median is 184 for 52-inch fans, 229 at 60 inches and 293 at 84 inches. A figure only reads as good or weak next to fans of the same span and mount type.

Where the figure comes from

CFM/W is the efficiency figure EPA publishes: airflow in cubic feet per minute per watt, as measured in the ENERGY STAR test across the fan's speeds. The list does not publish the airflow figure itself. For standard and hugger fans the value is a weighted figure that folds the low-speed test, the high-speed test and standby power into a single number. For low-mount high-speed small-diameter fans, the HSSD class, only high speed and standby count. Because the weighting differs, the two families are never ranked against each other on this site.

Next to that one value, the list prints the watts drawn at high speed, at low speed and in standby. A fan's CFM/W cannot be split back into separate results for each speed, and a fan with a high figure can still draw more watts on high than a fan with a lower one. Efficiency and power draw answer different questions, and the fan table shows both.

Typical values for each blade span

The table sets out the spread of standard fans in each span. The low end is the 10th percentile, the score that only one fan in ten falls below; the high end is the 90th percentile, which only one fan in ten beats.

Blade span	Standard fans	Low end	Median	High end	Hugger median
under 42 in	10	68	104	142	–
42 in	14	150	217	331	117 (8)
44 in	27	129	191	249	174 (16)
48 to 50 in	13	194	245	368	–
52 in	238	116	184	265	165 (51)
54 to 58 in	67	170	213	276	–
60 in	119	174	229	313	188 (5)
62 to 66 in	33	196	229	320	–
68 to 72 in	51	198	266	356	–
84 in	15	224	293	412	–

Of the 8 spans with twenty or more listings, 52 inches has the lowest median, 184, and the widest spread: its high end is 2.3 times its low end. It is also by far the largest group, with 238 standard fans, so the list holds both very strong and very weak 52-inch models. A 52-inch fan needs about 226 to sit in the top quarter of its group. The 84-inch group has the highest median at 293, from only 15 fans.

The smallest fans sit well apart. The 10 standard fans under 42 inches post a median of 104, and the lowest score on the whole list belongs to one of them: the Artika Fan-Sur-Sl, a 19-inch fan at 60.1 CFM/W.

Huggers and HSSD fans

Hugger fans mount flush to the ceiling. The 87 huggers on the list have a median of 163 CFM/W, and in every span with at least five of them they trail standard fans of the same size: 165 against 184 at 52 inches, and 117 against 217 at 42 inches. The hugger article goes through each span.

The 38 HSSD fans post a median of 294. That figure leaves low speed out of the weighting, which is why it is shown on its own and not set beside the standard-fan numbers above.

Reading one fan's number

The useful question is how far a fan sits from the median of its own group. The Hunter Vespucci scores 366.7 CFM/W, +99% against the 52-inch standard median and first of 238. The Hampton Bay Benning 52 in, also a 52-inch standard fan, scores 151.9: rank 174 of 238, −18% against the same median. Both carry the same certification; the gap between them is what the ranking shows.

The fan table does this for every group. It ranks each fan within its span and mount and prints the percentage gap to the group median next to the watts, so two fans of the same size can be read side by side.

Newer listings

The list keeps every fan that is still certified, so it mixes models certified in 2018 with models added this year. Among 52-inch standard fans, the 116 first certified in 2025 or 2026 post a median of 200 CFM/W, against 171 for the 122 certified earlier. A listing's date says when it joined the list, not how old the design is.

The ends of the list

On the list, 72 standard fans reach 300 CFM/W or more, and 82 fall below 150. The top standard fan is the Aeratron AE+2WI60, a 60-inch model at 483.0 CFM/W that draws 16.2 W on high. That is +111% against the 60-inch standard median, the largest margin on the list.

CFM/W says nothing about noise, finish or the light a kit gives, none of which the list records. For power use alone, the watts on high, low and standby are the plainer guide, and the article on watts covers them span by span.