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How do kitchen exhaust fans work?

Views: 0     Author: Site Editor     Publish Time: 2021-07-13      Origin: Site


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We have to vent about something… It’s your kitchen. Specifically, your kitchen exhaust fan. Many don’t know how they work. 

Your kitchen exhaust fan is critical to the health and safety of your kitchen. It can quickly improve the indoor air quality of your home, which can ward off a variety of health issues. 

So, what is a kitchen exhaust system and how does it work? Keep reading to learn more!


Here is the content list:

What is a kitchen exhaust fan?

How do kitchen fans work?




What is a kitchen exhaust fan?

Your kitchen exhaust is a fan above the stovetop that removes the airborne cooking byproducts from the air in your kitchen. These byproducts can include grease, rogue spices, fumes, smoke, steam, and heat. While critical to your home kitchen, commercial kitchen exhaust fans are a necessary safety measure – as they often include fire suppression devices to vent and extinguish fires.

kitchen exhaust fan

How Do kitchen Fans Work?

There are two types of kitchen exhaust fans systems, ductless and ducted. Ducted hoods are the most common. True to their name, they have a duct that the air gets sent through. These are popular in both homes and commercial kitchens. Ductless hood suck in the air, filter it and send it back into the room. Let's explore both of them below:


There are a few essential components to a ducted kitchen exhaust fans system. These include:

Hood: The hood is the most recognizable part of the system. This floats above the stovetop and houses the kitchen exhaust fans and filter.

kitchen exhaust fans: Located inside the hood, the kitchen exhaust fans sucks the air through the filter and into the system

Honeycomb filter: Located inside the hood, filters grease particles and other byproducts

Ducts: Ducts are like a tunnel for the air to transfer outside the building. 

Ozone generator: Located inside of the ducts, the ozone generator cleans the air before it leaves the duct.

Lights: You can usually find these under or next to the hood to make seeing your culinary creations even easier

So, let’s say that you start cooking dinner and after a while, your kitchen is warm, steamy, and smells delicious. Little do you realize, there are also hot grease particles in the air, and like heat, rises a little bit.

You turn on the kitchen exhaust fans. The steam and grease particles get sucked up into the bottom part of the hood. Within that hood, there are honeycomb filters that trap the large grease particles.  The rest of the air flows into the kitchen exhaust fans duct. In some commercial kitchens, an ozone generator cleans the air and an aero vent kitchen exhaust fans pulls the freshly cleaned air the rest of the way through the duct and out onto the street or rooftop. 


A ductless kitchen exhaust fans system works differently than a ducted system, but they do have some similarities. Ductless systems will recirculate the air back into the kitchen instead of the outside, which is why they're sometimes referred to as recirculating range hoods. In a ductless system, a powerful motorized kitchen exhaust fans sits above the stovetop. When the switch is flipped, the kitchen exhaust fans sucks the air up through a vent and filter.


Guangzhou Yuexun Electric Appliance Co., Ltd has developed a variety of different kitchen exhaust fans. If you are in the kitchen exhaust fans business, you can consider using our cost-effective products.

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206,207,208, No. 4, Lijun Road, Xili Industrial Zone, Shatou Street, Guangzhou, Guangdong, China
About us
Guangzhou Yuexun Electric Appliance Co., Ltd. is newly established head office for AC motor DC motor Exhaust fan and fan parts in 2017. It is based on the family company in Zhongshan. Which has more than 12 years experiences in design and production.
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