What is the CFM and Sone rating on a non-ducted range hood?
There is no national standard for the measurement of CFM or Sones on a non-ducted hood because the air is not exhausted, it is re-circulated. [Back To Top] • How much CFM do I need for my Range or Cook Top? For conventional electric and gas ranges or cook tops, we offer a complete line of hoods that can fit your cooking needs with features you desire. For high output gas ranges or cook tops, the minimum rate of 1 CFM of ventilation per 100 BTU is recommended. [Back To Top] • What do the CFM and Sone ratings mean? CFM stands for Cubic Feet per Minute of exhausting air flow. The higher the number, the greater the amount of air that is exhausted using the Range Hood. Think of it as how much faster the air would be cleaned…the higher the CFM, the faster the air is cleaned…..but usually this means the higher the Sone. A Sone is an internationally recognized unit of loudness. Sones are a linear measure like inches. Doubling the sone value is equivalent to doubling the loudness. To get a
