Ceiling Fan Air Flow Comparison

Blade pitch blade shape and size rpm height from ceiling and motor size.

Ceiling fan air flow comparison.

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 rooms with ceilings eight feet or shorter flush mount fans like the cirrus flush mount ceiling fan from modern fan company are the ideal option. 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.

The fan s motor the blade pitch and the length and or shape of the fan blades. Cfm is the most common form of measurement when speaking about ventilation heating and cooling. Five factors work together to determine the airflow and efficiency of a ceiling fan. The measurement is taken when the ceiling fan is on its highest speed and uses both the volume of air and the rate at which it moves.

If you look into any ceiling fans for patios comparison chart on the web you will see that it is hard to beat the callito in design and functionality. This 31 fan with its powerful motor spins the 6 all weather blades at a 25 pitch to provide 3055 cfm air flow. For fans that are less than 49 the note will read compare. The most energy efficient ceiling fans use less than 60 watts on average and have high airflow.

It has an elegant look and features everything you need in a ceiling fan. Put simply cfm is how much air a fan moves. To qualify for energy star certification a fan must produce at least 155 cfm 100 cfm and 75 cfm of airflow per watt on the high medium and low speeds respectively. Ideally aim for at least 12 inches.

On average a ceiling fan has an airflow generation of about 5 500 cfm and consumes 70 w. Dividing the airflow generation by the power consumption gives the ceiling fan s efficiency. No need to tolerate squeaky shaky dimly lit or downright gaudy fans any longer. In this case the average ceiling fan efficiency is 5 500 cfm 70 w or about 79 cfm per w.

The number depends on a few things.