Can You Vent A Range Hood Into A Chimney for Kitchen Exhaust

Yes, you can vent your range hood into a chimney for kitchen exhaust, but this is only an alternative. Keeping your kitchen clean from smoke, steam and odors is essential to having a healthy home. For this you will have to vent your range hood outside. If you are considering using a range hood to vent kitchen exhaust into an existing chimney, then this article will provide you with the information needed to make an informed decision. It will also explain the advantages and disadvantages of this option and provide tips for proper installation.

What is a chimney commonly used for?

A chimney is a vertical structure that is often found in homes or businesses that have a fireplace. It’s an important component of any fire-burning system as it allows smoke and other combustion gases to escape outside, rather than build up inside the home.

Chimneys serve many purposes around the home, from keeping your family safe from carbon monoxide poisoning to helping keep drafty areas warmer during cold winter months. Not only does a chimney help protect you and your family from dangerous fumes, but it also can add aesthetic appeal to your home’s exterior.

The classic look of a brick or stone chimney complements many architectural styles and adds character to any home. In addition to providing ventilation for fireplaces, many people utilize their chimneys for other purposes such as venting furnaces and stoves.

Also Read: There are more options available like wall or Roof venting. They each have their own benefits. Another option is basement venting. Check them too.

Also Read: There are more options available like wall or Roof venting. They each have their own benefits. Another option is basement venting. Check them too.

Advantages of venting your range hood into a chimney

Venting your range hood into a chimney is a great way to ensure proper ventilation in your kitchen. Here are 10 advantages of opting for this kind of setup:

1. Chimney can act as an exhaust fan itself

The chimney can act as an exhaust fan, helping to draw the air away from the cooking area and expel it outdoors. Thereby improving indoor air quality by eliminating grease, smoke and odors. So I think, for acting as a self-exhaust system it will increase the range hood’s efficiency.

2. Chimney’s structural design

Due to its structural design, the chimney is capable of increasing the static pressure of air movement, enhancing the efficiency and velocity of the airflow. The chimney is a hollow structure, and it is made of bricks or mortar. It has an internal diameter of about 8″ to 12″. The chimney flue pipe is designed with a downward slope, which helps in increasing the air velocity.

3. Protection of walls and ceilings

Another such benefit is its ability to protect walls and ceilings from damage. Without venting the range hood into the chimney, you would need to make a hole in your wall or ceiling for exhaust ventilation. That can cause significant damage. By utilizing your existing chimney, you avoid this problem altogether.

4. May reduce the amount of maintenance

With no new holes or alterations to be made in your walls or ceilings, there is less risk of needing any further repairs due to damaged drywall or insulation.

With no extra ventilation holes to be concerned about maintaining. It becomes easier and more cost-effective to keep your range hood running at peak efficiency without requiring lots of maintenance attention.

Disadvantages of venting range hood into the chimney

A chimney may be tempting to connect your range hood directly to the chimney as an alternative or additional ventilation system. Before doing this, there are some disadvantages you should consider that could come with venting your range hood into the chimney.

1. Complex installation

Venting a range hood into an existing chimney can be a complex installation. But it’s not impossible. With the right tools, some proper planning, and careful attention to detail, homeowners can complete this task on their own.

The complexity of venting a range hood into a chimney is often due to its size and construction.

2. Limited locations to install range hood

Venting a range hood into a chimney may limit the options for the location of the hood, as it may need to be situated close to the chimney for proper ventilation.

3. Can be a compatibility issue

Depending on how old your chimney is and what type of materials were used in its construction, you may need special adapters or custom fittings to create an effective seal between the two components.

How do you vent a kitchen range hood on a chimney?

How do you vent a kitchen range hood on a chimney?

With just a few easy steps, you can have your range hood safely installed in no time.

First, make sure that you have all of the materials that you need for the job: duct tape, screws, clamps or nails, and venting pipe.

Measure up the wall or ceiling where you plan to install your range hood so that you know how much pipe will be needed to reach the chimney. There are several types of ducts but I will suggest you use semi-rigid ducts because they are easy to install and space efficient.

If you have an old dryer vent then you can use it too for your range hood venting. But this is only an alternative when you have no other ducts.

Once everything is gathered together and ready to go, start by attaching one end of your vent pipe to the underside of your range hood using either screws or clamps.

What size chimney extension do I need for my hood?

A well-functioning chimney extension is an essential component for an efficient range hood. The size of the extension will depend on both the model of hood and the space it occupies in your kitchen.

The size requirements for a chimney extension are determined by three factors. Its height, width, and depth. Its height must be at least 6 inches higher than the tallest point on the hood itself. Its width should match that of any decoration or framing around your range. And finally its depth should meet or exceed that of the duct used to ventilate your home.

When installing your new chimney extension, be sure to check with your local code enforcement office. It will allow you to make sure that you’re compliant with local building regulations.

Is there any prohibition from the building code for venting the range hood into the chimney?

When it comes to kitchen construction and renovations, it can be difficult to know what is allowed and what isn’t.

The answer is that while there are no outright prohibitions, there are a few considerations you should keep in mind.

First, the range hood must be sized appropriately for the cooking surface and ducted properly. So that smoke and fumes don’t escape back into your kitchen space.

Secondly, you have to make sure that the flue gases from the range hood won’t interfere. Especially with other appliances or equipment venting through the same chimney.

How long can you run a range hood into the chimney?

Fortunately, there are no hard and fast rules when it comes to how long a range hood vent should run into the chimney. According to industry professionals, your range hood can run up to 25 feet into the chimney without any negative impacts on performance or safety. But as long as you maintain the proper ventilation.

It is important that your installer takes factors such as number of elbows in the path and duct size into consideration when determining length in order to ensure efficient airflow.

In addition, if possible try and keep your vent as short as possible by using flexible ductwork or multiple shorter runs rather than one longer one.


Venting a range hood into a chimney is an effective way to reduce odors and moisture in the kitchen but it is not primarily not suggested. This is an alternative way. It is important to understand that this should only be done with certain types of range hoods. However, for those that are suitable, it can result in improved efficiency and airflow.

It is important to check local building codes and consult with a professional before attempting any DIY projects. Additionally, take the time to research different options so you can find one that meets your needs.

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