Define Sones -

are a unit of measurement used to describe the perceived loudness of a sound.

Very loud. Imagine a vacuum cleaner or a noisy hair dryer. Why Sones Matter When Shopping define sones

Nearly silent. This is the sound of a quiet library or a very high-end refrigerator running. are a unit of measurement used to describe

A powerful range hood is useless if it’s so loud you refuse to turn it on. By checking the sone rating, you can ensure the appliance clears the air without making it impossible to hold a conversation. Why Sones Matter When Shopping Nearly silent

A typical television at a normal volume or a standard office conversation.

Decibels are logarithmic. A 10 dB increase represents a tenfold increase in sound intensity, but the human ear perceives it as only "twice as loud." This makes it hard to compare products. Sones remove that mental math—if one fan is 2 sones and another is 4, you know exactly how much louder the second one will feel.

Generally, lower sone ratings at higher air-moving speeds (CFM) indicate better engineering and higher-quality motors.