For our safety, we always stay tense, thinking about what we should do and what we should not. In this case, if you use a microwave vent, it will reduce your worry because it will automatically work if the oven’s temperature gets too hot, so there is no risk left, which will put our lives in danger. So, at least for our safety and our families, we should learn about it to avoid any risks.

Anyway, let’s find out today whether we can use flexible ducts for microwaves or not.

I hope you will clear out all of your confusion regarding this matter after reading this article. Therefore, let’s not waste our time and start our conversation. 

Can You Use Flexible Duct For Microwave Vent

Can You Use Flexible Duct For Microwave Vent?

A flexible duct is not durable and a bad investment for your microwave. So it is better to avoid using flexible ducts for your microwave. 

Microwaves are a necessity in every household. It is the most common machine you can find no matter where you go in this world. 

Microwave vent might seem overrated, but it is not valid because it is fundamental. You might think, why is that so? Because every microwave requires ventilation to work correctly and for safety as well. A fan attached with a microwave but ducted outside the house is mainly known as a vented microwave range hood. 

When Would You Use A Flexible Duct?

Before starting, can you tell me what you know about flexible ducts? Or have you ever used it for your needs? If you are blank about this matter, let me tell you what it is first.

A flexible or flex duct is a component of a cooling and heating system commonly attached to the walls or ceiling of a commercial building—this type of ductworks by connecting the supply ducts of a building to the air distribution panels. Popular materials for this type of duct include rubber, steel, plastic, and neoprene.

What are the disadvantages of using flexible ducts?

If you are thinking of using a flexible duct for your microwave, you have no idea about the downside. Then keep reading to know about the disadvantages of flexible ducts.

Firstly, flexible ducts are not permanent; the average lifespan is about 15 years. 

Again, it is known that flex ducts are way too stretchable; for that reason, people usually install them in the wrong way. Thus, if you will buy one soon, then think about the disadvantages; otherwise, that will be a waste of your energy and money. 

Do You Need To Vent Your Microwave?

Although microwaves do require ventilation, the exact requirements vary depending on the model and design of the oven. Having the proper ventilation is very important for safety and efficiency. So, now you know that microwaves need ventilation, but keep in mind that you don’t need to worry about those which come with built-in vents.  

What Is The Best Way To Vent A Microwave?

There are various options for venting a microwave, such as recirculating vents and ducted vents. These are designed to collect the microwave’s air and deposit it outside the home. So, you can choose the best one for you and your house or office because your ultimate aim is to reduce smoke, cooking smell, and hot air from the kitchen. 

What Size Is The Microwave Vent?

The standard size for a microwave vent is 31/4″ x 10″ (8.3 x 25.4 cm) rectangular or 6″ (15.2 cm) round vent. But you have to make sure that the total length of the vent system, which includes the straight vent, elbow(s), transitions, wall, or roof cap, does not cross 140ft (42.7m) no matter what type of vent you are using. 

Is It Better To Vent A Microwave Outside?

No matter which method you use, and Over Range microwave oven can be vented outdoors. It is a better option to keep the air of your house clean and fresh from the cooking smell. So, if you buy a microwave vent and think about where to keep it, then let me tell you, microwave vents are a redistributing type, so the air will come back to the house if you keep the vent inside.  

Does A Microwave Hood Need To Be Vented?

Does a microwave hood need to be vented? Of course, it does. But is it only required to be vented outside? 

There are no rules included that show your OTR ( over the range) microwave hood needs to be vented outside. All OTR microwaves are installed in a way where it can allow its fan to recirculate the air back into the kitchen or be vented to the outside. 

However, no requirements are shown that state that your OTR microwave must be vented outside. I hope this doubt of yours is much clear to you now. 

What Kind Of Vent Do You Use For A Microwave?

Two types of venting systems are available right now for your microwave’s exhaust fan. One works by recirculation, and the other is by venting to the outdoors. But if you are using the recirculate venting method, you are just going to face both advantages and disadvantages. 

How Do You Keep Cold Air From Coming In The Microwave Vent?

Cold air can come from both of the doors of your microwave, one which is the back of the range hood of your microwave and the other which is on the exterior of the wall. 

If you see some holes near your microwave, you must seal it as soon as possible to keep the cold air coming in the microwave vent. 

You can seal it with a fire-rated barrier, drywall, fire-rated foam, or sheet metal. Or you can also change the outside venting feature of your microwave if you want to keep the cold air coming in the microwave vent. 

How Do You Vent An Interior Wall Microwave?

It is very fulfilling to have hot delicious food which comes straight out of the microwave, but what about the smell of that specific food? Does it feel nice to have a foul odor on your clothes? That’s why venting is essential. 

To prevent lingering that smell in your house and, most importantly, on your clothes, microwave venting is a must thing to do. However, I will teach you how to vent a microwave on an interior wall. 

  1. If you want to vent the microwave outside, then first select and finalize a specific place where you want to install your microwave inside of your home.
  2. After the decision is done, you might need to do a template on the wall where you must place the vent. 
  3. Now, start drilling to position the template. 
  4. You have to put the mounting bracket of the microwave to the wall by drilling some holes. 
  5. Gently lift the microwave and then install it. Thou, confirm that all the edges and corners are perfectly fitted. 
  6. Make sure to fit the bolts perfectly tight. 
  7. Take a look if the power cord is secured or not.
  8. Don’t forget to screw the mounting bolts through the cabinets for a stronger hold. 
  9. Now, you can connect the exhaust adapter to your microwave. 

Here is a video from LETMELIVE Youtube channel about “How to VENT your microwave to the exterior DIY”.

What Is A Convertible Vent In A Microwave?

Convertible vents help improve the air quality of your home by venting the air out of your home’s kitchen. You can also change it into a ductless system that uses an air filter to vent the air out of your home.  

Difference Between A Recirculating And A Convertible Microwave:

There are two types of standard venting systems you can see everywhere. One is recirculating, and the other is convertible. Both of them are a pretty helpful venting method. 

Convertible Venting MethodRecirculating Venting Method
1. Convertible vents of a microwave help to convert air outside of your home. This means it is an exterior venting method. It can also turn into a ductless system that uses an air filter. 1. On the other hand, the recirculate venting method does not vent the air outside your home. It circulates your kitchen’s air by sending it through a series of aluminum, carbon, or charcoal filter vents to clean the air quality. 
2. A convertible vent uses a high-speed fan for fast venting.2. On the other hand, recirculating venting method is very energy efficient.
3. In terms of odor control, convertible vents work far better.3. A recirculating venting method loses effectiveness over time. So you can say that a recirculating venting method of a microwave is a bit less effective when it is time to control the odor.

Can You Replace A Stove Vent Hood With A Microwave?

If you have a stove vent hood and you are planning to replace it with a microwave vent hood but are confused about what to do and what not to do, then I have good news for you… 

If you think it is even possible, then your answer is yes. You can easily replace it. It would be best for you if you had some standard tools a helping hand, and you are good to go because the easy process is just to use a flex duct and plug that in the oven. And your job is done. In this way, you can easily accomplish the replacing work. 


Can you use a flexible duct for the microwave vent? I believe by now you have got your answer. So, I hope my article was beneficial for you, and I am pleased to clear out your confusion. 

So, from now on, don’t panic thinking if you can use a flexible duct for your microwave or not. Because now you know the answer. 

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