What you need to know about Average Airflow numbers
Over the years, Energy Star has had a strong influence on the ceiling industry. As of 2018, ceiling fan manufacturers are now required to publish air volume numbers as "Weighted Average Airflow". Instead of maximum or high speed performance, consumers are now being shown numbers that represent an average airflow performance (calculated from high speed output and low speed output).
Very few home owners use their fan at high speed all of the time and very few home owners user the fan at low speed all of the time. The Weighted Average Airflow numbers will help consumers get a feel for the average electrical cost of running a fan over a long period of time.
While the concept of Weighted Average Airflow sounds pretty good, this is like trying to sell a sports car by advertising it's gas mileage. One of the most important features that consumers look for is air performance. Ceiling fans use very little electricity compared to other major appliances like clothes dryers and air conditioners. It is our opinion that most consumers will benefit by knowing the high speed performance of a ceiling fan, so they are equipped to know the maximum amount of cooling that they can expect from their fan.
Ceiling Fans Hawaii publishes the required Weighted Average Airflow numbers and we identify those numbers.
Where possible, we also list the high speed airflow performance for ceiling fans on our website so that you can understand the maximum power of each ceiling fan.