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When you are in need of a new restaurant exhaust fan - whether it’s a new system altogether or you are replacing an existing system - there is always the possibility that you may not know the correct exhaust fan size needed to properly run your commercial kitchen. Choosing the right size exhaust fan can make or break a functional system - too small may not properly filter out the air and leave behind grease, smoke, and other particles, and too large of a system may be too much power and more of a power drain on resources than what is necessary for the kitchen. Here are some tips and things to look out for when picking the right size exhaust fan system for your space:

CFM - CFM stands for Cubic Feet per Minute, and is the amount of air that the fan exhausts out from the kitchen space. Having the correct CFM is vital to your kitchen exhaust system. Too weak of a CFM won’t be strong enough to push out grease, moisture, heat, and other airborne contaminants outside. If your CFM is too strong it can create negative pressure and drafts in the kitchen. 

Exhaust Hood Size and Location - the ventilation hood in your kitchen is the first step in the exhaust process, and you’ll need to know the size of the ventilation hood to be sure you are ordering the correct size exhaust fan. Other factors to consider are also the hood design itself as well as the mounting location.