5 Tips for Buying a Commercial Exhaust Fan

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Good ventilation is key to a safe, healthy, and happy working environment. A good commercial exhaust fan will help push out stale air and invite fresh air in. Although you can likely appreciate that commercial exhaust fans are a necessity, it can nevertheless be daunting to actually set out to buy one.

And truth be told, these insecurities are not unvalid because installing the wrong type of exhaust fan could end up costing you a lot of money down the road.

Figuring out which is the right commercial exhaust fan for your building isn’t rocket science, so here are a few tips to help you choose the right one for your needs.

 1. Know the size of the space that needs ventilation

The very first thing you should do is figure out the size of the space that requires ventilation. Depending on whether you’re in search of a commercial exhaust fan for a kitchen, factory, office or hallway will affect your needs significantly. Measure the room, or the rooms, that are in need of ventilation and have these numbers handy when you head out to shop. Be aware that if you need to ventilate a very large building, you will definitely need to buy one than one exhaust fan. The setup of a room or building might also determine whether or not one single model will be able to do the job.

2. Understand what options available

Knowing as much as possible about what kind of models are available before you head out to shop will make the whole experience much more pleasant. Indeed, all commercial exhaust fans are designed to move air from one space to another, but there are different models available on the market and they have different strengths and weaknesses depending on your needs. For example, when it comes to installation keep in mind that all commercial exhaust fans can be installed in a wall, on a roof, or in a duct.

3. The three main types

You will have to now choose between a direct drive, belt drive, or centrifuge style of commercial exhaust fan. In general, direct drive fans are good when you need something low volume and low static pressure, they also don’t require a lot of maintenance. Belt drive fans and wheel propeller fans are ideal if you want to move large volumes of air, with low static pressure. Finally, centrifugal fans are quieter, and they are more efficient when a high static pressure is needed.

4. Calculate the CFM your commercial exhaust fan needs

Now it is time for some fun with math. The air volume flow rate of commercial exhaust fans is measured in CFM, or cubic feet per minute. In order to determine what this number is, you first need to calculate the volume of this room by multiplying its length, its width and its height. You will then have to divide the volume of the room by the number of minutes per change needed. You should be able to find the number of minutes per change in your local building codes. Now that you’ve got your CFM figured out, you’ll have a much easier time finding the right fan.

5. Don’t forget that your fan is going to make some noise

Sones are the unit of measurement we use to discuss how much noise a fan makes, and this consideration might be more or less important to you depending on where you are planning to install. If you are dealing in a noise sensitive environment though, don’t forget to account for this factor.

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