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FAN AIRFLOW DIRECTION PRO

The number of blades on the fan isn’t necessarily an indicator of ceiling fan airflow, but the ceiling fan blade pitch (or fan blade angle) and shape can impact airflow.

FAN AIRFLOW DIRECTION PRO

Pro Tip: To calculate airflow efficiency, divide the CFM by the energy (measured in watts) needed for operating the fan at the high-speed setting.įactors that determine ceiling fan airflow and velocity Fan blade shape and pitch We measured and designed our SureSpeed® ceiling fans based on airflow instead of CFM because airflow more directly translates to what you feel from a fan. Ceiling fans work by using the “wind chill effect” to cool people – and the faster the air comes from the fan, the cooler you’ll feel. It’s a lot like when you have the window open in a moving car. Hunter ceiling fans still produce high CFM ratings. We optimize our fans’ motors and blade pitch to move a lot of air while consuming less energy. What is a good airflow for a ceiling fan? So, if fan size and CFM doesn’t always translate to a cooler you – than what does? Let us break it down for you. So, if they turned off the central air, you wouldn’t feel the coolness you desire. Yet, the air you feel isn’t coming from that fan, it’s from a central air system. Think about when you’re at a gym, Costco, or Walmart – those big fans have a higher CFM than your fan at home. Simply put: CFM measures how much air is being moved while air velocity measures how fast it moves. The bigger the fan and greater CFM, doesn’t always translate to a cooler you.

Airflow relates to the speed of the air movement, measured using miles per hour (mph).

The testing measures are based on the Department of Energy’s (DOE) idea of average daily fan use. The bigger the fan, the more CFM. Our lab technicians measure a fan’s CFM when it's running on high and low speed, then calculate the average.

CFM measures the volume of air a fan moves in cubic feet.

The first thing to understand when evaluating which ceiling fan moves the most air and will cool you best is the difference between CFM and velocity. While CFM does talk about the air in relation to the fan, there are many more factors that go into a fan to produce the best airflow. There’s nothing like the feeling of a cool breeze from a fan during a summer day. To achieve it, you need a ceiling fan that moves the most air. When choosing the right fan, some look at the CFM (cubic feet per minute) number on the box or online product page.