Ceiling Fan Air Flow Comparison

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Ceiling fan air flow comparison.

Ceiling fan airflow and efficiency are often overlooked but the amount of air your fan moves each minute impacts the level of performance. In this case the average ceiling fan efficiency is 5 500 cfm 70 w or about 79 cfm per w. 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. The most energy efficient ceiling fans use less than 60 watts on average and have high airflow.

The number depends on a few things. The fan s motor the blade pitch and the length and or shape of the fan blades. The amount of airflow a ceiling fan can produce per minute is most commonly measured in cubic feet per minute or cfm. No need to tolerate squeaky shaky dimly lit or downright gaudy fans any longer.

Cfm is the most common form of measurement when speaking about ventilation heating and cooling. 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. For fans that are less than 49 the note will read compare. Blade pitch blade shape and size rpm height from ceiling and motor size.

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. On average a ceiling fan has an airflow generation of about 5 500 cfm and consumes 70 w. These 6 ceiling fans are quiet powerful and stylish options for your home.

It has an elegant look and features everything you need in a ceiling fan. The more space between the ceiling and the blades the better for air flow and circulation. Ideally aim for at least 12 inches. Put simply cfm is how much air a fan moves.

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.