How To Stop A Downdraft In A Wood Stove – The Basics

A downdraft in a wood stove is one of the most annoying things in a fireplace. It happens when the chimney flue gets clogged or blocked, causing cold air to enter the house and create cold spots in the living room.

The effect of this can be felt everywhere from the room’s temperature to the dryness of air to rusting of chimney liners and even damaged furniture.

A downdraft is a downward flow of air in a wood stove that can cause the fire to go out. If you notice smoke or flames coming from the stove, open the draft door and evacuate the building immediately. To prevent a downdraft from happening in the future, install an airtight seal around the stove’s door. If you notice a downdraft in your fireplace, follow these basic steps below to stop it.

How To Stop A Downdraft In A Wood Stove

10 Steps To Stop A Downdraft In A Wood Stove

Stop A Downdraft In A Wood Stove

If you’re noticing that your wood stove is starting to produce less heat, there may be a downdraft happening. A downdraft is a type of wind that sucks the air out of the stove, reducing the heat it produces. If you’re experiencing a downdraft in your wood stove, there are a few things you can do to try and stop it. Here are ten steps:

1.Open The Windows

Open The Windows

To stop the downdraft from forming in a wood stove, it’s important to open the windows and vent the chimney. This can help to allow air to circulate the stove and reduce the risk of downdrafts. It is also important to ensure that the stove properly ventilates. A fireplace must ventilate all the time, regardless of whether it is in use or not. By ventilating the fireplace constantly, you are reducing the risk of downdrafts and ensuring that your wood stove provides you with consistent and reliable heat.

2.Seal The Stove’s Door

Seal The Stove's Door

To effectively stop air from entering the wood stove and causing a downdraft, it’s important to seal the door properly. A good way to do this is to use high-quality caulk or weatherproof material around the edges of the door. If the seal is properly made, no air can enter the stove, resulting in less noise and a more stable burn.

It’s also important to ensure that the seal is not broken or improperly applied. If the seal is broken or improperly made, air and moisture can escape, causing problems down the line. Finally, it’s important to regularly check the wood stove for any signs of airflow: leaks, creaks, or gaps around the door.

3.Insulate The Wood Stove

Insulate The Wood Stove

A downdraft can occur when the air temperature outside is cooler than the air temperature inside the wood stove. This results in a decrease in the airflow of the stove, causing it to lose heat. This heat loss can lead to dangerous smoke or carbon monoxide buildup if the stove is not insulated. As a preventative measure, insulating the wood stove can help prevent this from happening.

Insulating the stove involves covering it with insulation or installing a chimney liner that keeps air from escaping. Besides insulating the stove, you can also open the door and windows for better airflow and turn off the heat source if possible. This will help ventilate the wood stove and reduce its temperature. It will also make it safer to work around.

4.Remove Soot Buildup

Remove Soot Buildup

Soot buildup in the flue of a wood stove can lead to down doors. It is important to regularly clean the stove and remove soot buildup to prevent this. You can do this by cleaning the stove chimney and flue with a fireplace brush or using a vacuum to remove soot from the flue.

Other options include installing an air filter or replacing the fan on the stove with a more powerful one. If downdrafts are an ongoing problem, it may be necessary to replace the stove fan. This will ensure that air is flowing smoothly throughout the firebox and flue. You can avoid downdrafts and keep them operating efficiently by ensuring that your wood stove has a clean flue and chimney.

5.Adjust The Damper

Adjust The Damper

Downdrafts can occur when the airflow in the wood stove is disrupted. The downdrafts can cause the fire to go out or leave burning embers in the stove. To prevent downdrafts, adjust the damper to a setting that allows air to flow freely but restricts the amount of air entering the stove.

This will prevent the fire from going out and leaving burning embers in the stove. By adjusting the damper to a setting that allows air to flow freely but restricts the amount of air entering the stove, you can ensure that your wood stove stays lit and efficient throughout your fireplace season.

6.Turn Off Nearby Fans.

To stop a downdrous downdraft in a wood stove, turn off nearby fans and close the damper on the firebox. As an alternative to this, you can turn off the main electrical switch of the stove and remove any objects that may be blocking the draft from entering the stove stack.

Besides this, it is also important to clear any leaves or debris around the stove opening. Additionally, position a door or screen over the opening to divert wind from the stove. Following these steps can prevent an unwanted downdraft from disturbing your wood stove operation.

7.Get A Longer Chimney Flue.

Get A Longer Chimney Flue

A downdraft is a wind flow that can cause problems in your wood stove. The most common symptom of a downdraft is a draft along the edge of the stove; the air moving across the stove creates a cold spot directly next to the flue. This can lead to the heat from the fire moving quickly away from the stove, causing it to cool down.

To avoid these problems, install a longer chimney flue to provide enough room for the air to circulate and prevent wind flow from affecting your wood stove. Adding this flue ensures that your wood stove maintains its heating efficiency and stays at the ideal temperature all day.

8.Shut Exhaust Vents

Shut Exhaust Vents

If you have an exhaust fan in your fireplace, close the vent on the chimney’s roof so that wind doesn’t enter the fireplace. Another way to stop a downdraft in your wood stove is by closing the exhaust vents on the chimney. When the vent closes, air cannot flow out of the chimney and escape into the atmosphere; this will help to prevent wind from entering your fireplace and causing problems.

9.Repair Chimney Cracks

Repair Chimney Cracks

A downdraft is a wind flow that pulls air from the top of the stove to the bottom, causing drafts and poor heat distribution. Downdrafts are most common in smaller wood stoves; however, they can occur in any stove. To prevent downdrafts from occurring, it is important to ensure no holes or gaps in the chimney flue. This can do by checking for signs of a downdraft (such as air blowing out of the fireplace) and repairing any cracks or gaps in the chimney flue.

Other steps include replacing flue tiles and cleaning and inspecting the fireplace and flue system. When taking steps to prevent downdrafts, it is also important to install an airtight door or damper to keep outside air from entering the stove and creating a downdraft. By taking these steps, you can ensure your wood stove continues to burn efficiently without creating drafts or affecting heat distribution.

10.Test For A Downdraft

Test For A Downdraft

Downdrafts are streams of air that flow vertically downward from the top of the firebox to the flue or chimney vent. They can cause serious problems in wood stoves, especially at night. To prevent a downdault from occurring, you must test for it.

You can do this by placing a thermometer into the stove chimney and observing the temperature as the stove fires up and after it has been operating for some time. One way to test for a downdraft is by placing an object inside the chimney. If air blows out of the fireplace, there may be a problem with the flue system, and it is important to take action to fix it.

Tips For Mitigating The Effects Of A Downdraft In A Wood Stove

Tips For Mitigating The Effects Of A Downdraft In A Wood Stove

As the name suggests, a downdraft is the negative pressure of air formed when the wind blows from the direction of a chimney effect. This causes air to move in the opposite direction of the chimney effect, sucking the smoke and heat from the fire into the chimney. To minimize its effects, follow the tips mentioned below. Close the oven door: Closing the door can help reduce the amount of air entering the stove. Keep the stove clean: Dirty or cluttered stove surfaces will cause more downdrafts.

Use a chimney starter: A chimney starter can help create a draft into the stove, helping to mitigate the effects of a downdraft. – Install an air damper: An air damper can help block drafts from entering the stove. Use a wood-burning stove funnel: A wood-burning stove funnel can direct wood pellets directly into the firebox, minimizing the effects of a downdraft.


Ultimately, it is all about mitigating the effects of a downdraft in a wood stove. If you adjust the damper correctly, seal the door of your wood stove well, and do not stack firewood too close to it, you should be able to minimize the effects of a downdraft. Besides, adjusting the chimney flue length and height can help reduce the air coming into your fireplace.

Get rid of exhaust vents and replace chimney cracks to mitigate the effect of downdrafts in wood stoves. Lastly, ensure that your chimney is not blocked by falling ash or soot. We hope this helps you understand how downdrafts are formed in wood stoves and how to cope with them.

Frequently Asked Questions:

1.What Should I Do If A Downdraft Does Form In My Wood Stove?

Ans: If a downdraft forms in your wood stove, do not attempt to fight it. Allow the draft to carry the stove into the fireplace. Open the flue door and wait for the stove to cool down before using it again.

2.How Can I Prevent A Downdraft From Forming In My Wood Stove?

Ans: You can do a few things to prevent a downdraft from forming in your wood stove. 1. Make sure the fire is burning well, and the draft guard is properly installed and in place. This will help to prevent the air around the fire from entering and creating a downdraft. 2. Always make sure the door is closed when not in use. This will help to keep the air inside the stove warm and curtail the formation of downdrafts.

3.Why Is My Wood Stove Blowing Smoke Into The House?

Ans: When the wind flows over the chimney of your wood stove, it creates a downdraft. This downdraft sucks the air from under the stove, which then causes the wood stove to blow smoke into your house. To stop the downdraft, open the damper on the stove so that the air can flow freely through it.

4.How Do I Clean Up After Having Used Sawdust As Fuel In My Wood Stove?

Ans: To clean up after using sawdust as fuel in your wood stove, use the following steps: 1. Use a broom and dustpan to clean up any loose sawdust. 2. Wipe down the inside of the stove with a damp cloth. 3. Do not use water or other cleaning agents on the wood stove surface.

5.What Is The Best Way To Ventilate My Wood Stove?

Ans: One way to ventilate your wood stove is by opening the flue damper on the stove pipe and the door on the chimney. You can also turn on the exhaust fan. Finally, open all windows in the home to allow fresh air in. Smoke detectors should set off as a precaution in case of a fire.

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