A cfm of 75 is the minimum number to make a fan efficient.
Ceiling fan airflow rating.
Airflow efficiency is the cfm divided by the watts amount of energy used to run the fan at its highest speed.
Best is over 6 000.
The amount of airflow a ceiling fan can produce per minute is most commonly measured in cubic feet per minute or cfm.
See what gives a fan power airflow efficiency and why.
The best fans have an airflow of 3 000 cfm or above.
Airflow rating or flow rate is the most effective way to measure the efficiency of a ceiling fan.
Airflow is one of the biggest factors to consider when choosing a ceiling fan.
But what cfm is best.
This is the main point of this article which i explain in more detail further on.
Cfm measuring airflow efficiency.
Good cfm ranges from 4 000 to 5 000.
Cfm is the most common form of measurement when speaking about ventilation heating.
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This makes it easy to compare two or more fans of similar size.
Better ranges from 5 000 to 6 000.
The cfm rating of the fan is the key consideration when choosing a fan as it determines the area a fan will cool and circulate.
Although a higher number is desirable fans with a very high airflow rating cfms that have an average efficiency rating may in fact be the better choice.