Why is the fireplace smoking?

The design of a fireplace often assumes an open space (firebox) in which firewood is burned. To ensure effective smoke extraction, the craftsmen complement the system with special exhaust ducts (chimney).

But in some cases, the gases emitting during the combustion process diligently do not want to move in the right direction, which leads to smoke.

This situation is very undesirable, since smoke is toxic to humans and it is harmful to be under its influence..


Types of smoke

Smoke can be encountered quite often in many fireplaces.. It should be noted that this phenomenon causes direct harm to the body. The smoke can lead to oxygen starvation of blood cells, which in turn can lead to fainting and possible death. Therefore, fireplaces should only be used in good condition..

Experts divide smoke emissions into several main types, depending on the method of gas penetration into the room:

  1. Reverse thrust. At the same time, in the channel of the fireplace there is an air flow directed in the opposite direction, which leads to the penetration of smoke into the premises. There may be several reasons for this phenomenon, but often it is a violation of the air exchange system in the chimney.
  2. Overturning thrust. This often happens when air from another source (window, door, etc.) enters the room. With this kind of smoke, smoke often seeps out not only through the opening of the firebox, but through the free slots of the fireplace. This can happen, both during the kindling process and during the fueling..

Possible reasons

Fireplace smoke is not such a rare occurrence that can happen to almost any structure.. There may be several reasons for this phenomenon, but they can be divided into 2 large subgroups:

  1. Constructional flaws. Often, the main reason for smoke is non-observance of the rules during the construction of the main parts of the fireplace (not optimal dimensions of the chimney or ash pan, the ratio of the volume of the furnace and chimney is incorrect, etc.). This not only reduces cravings, but it can lead to the fact that it may be virtually absent. Another reason is the incorrect location of the fireplace in the room. This factor determines whether other air currents will affect the movement of smoke in the desired direction..
  2. Mechanical obstacles. Often the main reason for the lack of traction is the chimney blocked by a gate. If operated or maintained improperly, a lot of soot can form inside the channels, which will impede the movement of gas.


Before proceeding with the elimination of smoke, the cause should be identified.. If it is in the wrong design of the system itself, then you can try to fix it in several simple ways:

  1. When the ratio of the size of the fireplace portal and the pipe does not correspond to each other, then this can be corrected with the help of an asbestos-cement strip. Its size should be slightly larger than the width of the portal. Then the strip is positioned sequentially at different distances, so as to select the optimal level of the portal, excluding smoke. When this point is found, the asbestos cement is simply replaced with a special decorative metal curtain that is attached to the fireplace..
  2. An alternative way to eliminate this phenomenon is to equip a special metal plate on the smoke tooth, which reduces the cross-section of the smoke collector..
  3. Forced ventilation. To improve traction, special fans are installed inside the fireplace channels, directing the flow in the right direction..

When these measures have not eliminated the cause, you only need to completely redo the fireplace itself..

In such cases, only experienced specialists should be trusted..

The efficient operation of the fireplace also depends on the fuel. It is undesirable to use damp firewood, since water not only takes up heat energy, but also contributes to the formation of soot in the chimney. Also, you should not constantly drown with pine or spruce, which leads to a similar effect. The best option is to periodically change tree species (oak, aspen, pine, etc.).

How to properly light a fireplace

The operation of such systems involves manual kindling of firewood. For such purposes, you will need dry chips and logs according to the size of your firebox.. To properly heat the fireplace, you need to perform a few simple steps:

  1. First of all, you need to make sure that the chimney is not clogged and that the damper is open. This will create optimal traction. It is also advisable to close all windows so that the air does not impede the upward movement of smoke..
  2. After that, you need to lay out the firewood.. On the bottom of the firebox, thin twigs or small cod are placed crosswise. This will ensure optimal air flow. To speed up the burning process, it is advisable to use crumpled paper (gloss is not recommended). On top of thin splinters, medium-sized logs are already stacked. When the structure is ready, you can light the wood and enjoy the crackle of the fire..


In order for your fireplace to serve for a long time and reliably, you should entrust its construction to specialists..

It is also important to constantly monitor it and use only high-quality fuel that brings warmth and comfort to the house..

About the author