Ceiling Fan Airflow Chart

A large ceiling fan in a small room will create an uncomfortable amount of airflow.

Ceiling fan airflow chart.

The four areas that determine airflow are blade shape blade pitch distance from ceiling and motor quality. Cfm measuring airflow efficiency. Those designed for airflow and those designed for static pressure. Blade pitch blade shape and size rpm height from ceiling and motor size.

Unless you like replacing your ceiling fan every few months or feeling as if you re in a tornado choose a ceiling fan that is proportionate to the room size. 36 to 48 ceiling fans have airflow efficiencies ranging from approximately 71 to 86 cubic feet per minute per watt at high speed this bit of information is telling you what the expected range of efficiency should be for the size of fan you are considering. For fans that are less than 49 the note will read compare. Ceiling fan manufacturers are required by the doe to publish the airflow of each fan in cfm cubic feet per minute which is not the same as wind speed.

The size of a ceiling fan is determined by the size of the room or the area which you are looking to. Case fans generally come with two types of fins. Airflow or static pressure. Airflow quantifies the amount of air a ceiling fan delivers and is measured in cfm which stands for cubic feet per minute.

A cfm of 75 is the minimum number to make a fan efficient. Cfm is key when determining a fan s airflow efficiency. Five factors work together to determine the airflow and efficiency of a ceiling fan. Airflow rating or flow rate is the most effective way to measure the efficiency of a ceiling fan.

Ceiling fan airflow and efficiency are often overlooked but the amount of air your fan moves each minute impacts the level of performance. A ceiling fan can greatly improve the oxygen flow in your home and make it fresher. Cfm measurements are taken when a fan is on high speed then that number is divided by the watts used. Airflow efficiency is the cfm divided by the watts amount of energy used to run the fan at its highest speed.

See what gives a fan power airflow efficiency and why. Airflow optimized fans are quieter and great for unrestricted areas like the front of your case. Some fans and cases even come with manual switches for basic fan control. Cfm is the volume of air being moved every minute whereas wind speed how fast the air is moving in mph miles per hour or lfm linear feet per minute both of which are directly related to.