CFM (Cubic Feet per Minute) measures how much air a range hood can move per minute. A common rule of thumb is to have 100 CFM for every 10,000 BTUs of your gas stove. To calculate: total your stove’s BTUs and divide by 100.
Example: A stove with 40,000 BTUs needs at least 400 CFM.
However, higher CFM doesn't always mean better performance. There’s no global standard for measuring CFM, and results can vary depending on the kitchen layout, venting setup, open windows, and even testing conditions. In fact, changing just one element, such as closing a window can also affect CFM readings.
That’s why we recommend choosing a range hood like the CleaDeep, which prioritizes high air speed and smart airflow design over raw CFM numbers to ensure effective smoke and grease capture.