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CFM Calculation CFM Calculator Exhaust Fans General Industrial Proper Ventilation The Home The Workplace

What size exhaust fan do I need for my garage?  

Exhaust fans play a key role in every commercial and industrial setting. Whether it is for ventilation purposes only or if they are also needed to reduce the presence of noxious substances, choosing the right one is crucial in ensuring that it meets performance goals.

4 Factors Matter When Choosing an Exhaust Fan

When searching for a garage exhaust fan, there are four factors that must be considered. The fan model -- for example, direct drive, belt drive, centrifugal or propeller -- is important. Going hand in hand with the model is where it is designed to be located. The most common of these is a wall, roof or duct.

The cubic feet per minute (CFM) refers to the amount of air volume that can be exchanged by the fan. You'll also need to know the static pressure in order to assist you in choosing the right garage exhaust fan.

The sound level, as measured in sones, is also a factor. In general, one sone of loudness is about the same as a typical quiet refrigerator when heard from five feet away.

Finding the Right Size Exhaust Fan

In order to be effective, garage exhaust fans have to be the right size. An exhaust fan sizing chart provides an easy way to calculate the size you'll need. It is used to determine the cubic feet per minute (CFM) air exchange that is needed for a particular building.

Sizing an Exhaust Fan

When sizing an exhaust fan, it is important to be prepared with the proper measurements. Knowing the length, width, and height of the area or building in feet. Another important calculation that is used to determine the sizing for an exhaust fan is the frequency of the air exchange that you desire. This will be expressed in minutes.

The Importance of CFMs

If you aren't sure what about the CFMs that your particular building might need for garage ventilation fans, you can find some general guidelines for sizing exhaust fans. For example, the typical assembly plant typically requires a frequency of air exchange of six with a range of between 2 and 10. A garage, on the other hand, usually needs a 7 air exchange rate with a range of between 4 and 10. Keep in mind that these guidelines are based on zero inches of static pressure.

It is important to remember that these are simply guidelines. At Industrial Fans Direct, we understand that no two businesses are the same. We work closely with you to determine the right factors and goals you need in a fan are met. Contact us today with assistance in finding the right size exhaust fan for your garage.

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