Airflow efficiency is the cfm divided by the watts amount of energy used to run the fan at its highest speed.
Ceiling fan airflow rating.
This makes it easy to compare two or more fans of similar size.
The best fans have an airflow of 3 000 cfm or above.
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.
Cfm measuring airflow efficiency.
The four areas that determine airflow are blade shape blade pitch distance from ceiling and motor quality.
Best is over 6 000.
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Airflow is one of the biggest factors to consider when choosing a ceiling fan.
Better ranges from 5 000 to 6 000.
A cfm of 75 is the minimum number to make a fan efficient.
Airflow rating or flow rate is the most effective way to measure the efficiency of a ceiling fan.
This is the main point of this article which i explain in more detail further on.
But what cfm is best.
At a glance this information helps you to gauge a ceiling fan s airflow and efficiency.
Cfm is key when determining a fan s airflow efficiency.
The amount of airflow a ceiling fan can produce per minute is most commonly measured in cubic feet per minute or cfm.