Ventilation performance is measured in cubic feet of evacuated air per minute (CFM), also referred to as airflow.
CFM describes the rate at which a certain volume of air moves in a certain period of time. In the case of a blower or fan, it indicates how much air it can move per minute.
Ventilation with too much CFM for your cooking surface means more air is being pulled out of your kitchen than is needed. This results in:
- Higher heating/cooling bills
- Not energy efficient
- Higher noise levels (higher CFM = more air through filters which creates turbulence)
It's important to purchase ventilation with CFM strength that matches your cooktop or range power so you can optimize the energy usage!