Ceiling Fan Blade Pitch Efficiency

This angle or pitch is measured in degrees.

Ceiling fan blade pitch efficiency.

Since the cfm is the measure for a fan s airflow efficiency the number of blades is more related to embellishing the style for your space. Ceiling fan blade pitch usually holds in the range between 11 and 16. Blade pitch is extremely important because it determines how much air the fan can circulate and the ideal blade pitch for a ceiling fan is 14 degrees or above. See what gives a fan power airflow efficiency and why.

Energy star certified most efficient 2020 ceiling fans. By paying attention to the ways in which these factors affect one another you can buy a ceiling fan that fits your needs and has long lasting durability without noise or wobble. Blade pitch blade shape and size rpm height from ceiling and motor size. It used to be the case that a five or six blade ceiling fan would translate into more efficiency as opposed to a three blade or four blade but that s no longer the case.

A cfm of 75 is the minimum number to make a fan efficient. Five factors work together to determine the airflow and efficiency of a ceiling fan. Fewer blades mean less drag. Products that make the energy star most efficient list for 2020 deliver cutting edge energy efficiency along with the latest in technological innovation.

The blade size shape design number and material all play a large part in the final cfm rating and quality. It is commonly stated that the steeper the blade pitch the more air a fan will move or a good fan will have a blade pitch of 14 degrees or more. On average a ceiling fan has an airflow generation of about 5 500 cfm and consumes 70 w. The four areas that determine airflow are blade shape blade pitch distance from ceiling and motor quality.

Dividing the airflow generation by the power consumption gives the ceiling fan s efficiency. Here at thingz we offer some of the most efficient and stylish fans in the nation. Learn all the information you need to start shopping including product details rebates and. They represent the year s very best for energy savings and environmental protection.

So the fan may not be considered efficient. Overall you re probably not going to see any significant differences in operational performance between ceiling fans with three or five blades. In this case the average ceiling fan efficiency is 5 500 cfm 70 w or about 79 cfm per w. In addition to the amount of blades the efficiency of a ceiling fan also depends on the blade pitch the balance of the blades and the motor.

These common misnomers are often used to entice people to purchase a ceiling fan regardless of how well it actually performs.