Why Does Smoke Come Down My Chimney

July 26, 2021

Downdrafts often occur in windy weather. The smoke can be worsened on a windy day and it could be bothersome if you are inhaling it over any length of time.

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Downdraught is typically caused by a chimney that is either not high enough or where wind current is changed due to surrounding trees or high buildings.

Why does smoke come down my chimney. With a more compatible ratio of flue size to fireplace opening the fireplace should stop smoking. Typically this will result in puffs of smoke coming out of the stove or fireplace. Occasional puffs of smoke that enter the room from beneath the chimney breast are usually caused by downdrafts or air rushing down the chimney in.

The chimney is designed to remove smoke from the fireplace and vent it outside of the home but you can still end up with some smoke wafting through your house. If your firebox is too big for your flue system more smoke can accumulate in the firebox than can safely draft up the chimney. Finally you should avoid blowing air out of the fireplace room with exhaust fans while a fire is burning.

Cold air up the chimney. The best solution is often to install a Smoke-Guard which is a metal strip that makes the opening of your fireplace smaller. Its common to see the smoke and think theres something wrong with your chimney but this is not the case.

White smoke coming from your chimney flue is actually steam produced from condensation as a byproduct of fuel burning. Occasional puffs of smoke that enter the room from beneath the chimney breast are usually caused by downdrafts or air rushing down the chimney in spite of the upward air flow caused by fireplace heat. Cold air is heavy and if the flue isnt heated quickly enough the cold air will force the smoke back into the room.

The clouds are a normal part of fireplace or boiler operation and shouldnt be cause for concern. If it hasnt happened before and the weather is bad this might be the cause. However if you have had it checked by a professional and other potential causes such as birds nests downdraughts or lack of ventilation into the room have been ruled out its likely that the air pressure outside is literally pulling the smoke back down your chimney and into the room.

Most likely this is a downdraft problem meaning the outdoor high winds are causing a draft down your chimney due to an oversized flue a too-short chimney or lack of chimney cap. Exposed property Is your property in an exposed location. Your fireplace will be smoky because more smoke collects in the firebox than can be drafted up the chimney.

If the problem is infrequent it. If the smoke is continuously coming out of them this is not downdraught - please see other causes of a smoking chimney on the smoking stove or fireplace page. If a home is too well sealed a slight vacuum can be created in the room by the smoke going up the chimney which eventually impedes the draft.

Modern homes tend to have solid floors tight fitting doors and draught stripped windows. Occasional puffs of smoke that enter the room from beneath the chimney breast are usually caused by downdrafts or air rushing down the chimney in spite of the upward air flow caused by fireplace heat. This can immediately solve smoking problems.

Stopping smoke from a fireplace on a windy day requires some diligence. Installing a wind-resistant chimney cap should prevent this from happening. However most chimneys are not straight vertical shafts.

Why does smoke come down my chimney. Install a Smoke-Guard a strip of metal to decrease the size of the opening of your chimney. Solution- if the fire hasnt been lit for a while the air up the chimney can get cold.

Even single chimneys usually incorporate a smoke shelf which is an internal ledge to assist the drawing up of smoke. Lack of ventilation to the room is therefore a common cause of smokiness more particularly in modern or modernized homes. If the fire doesnt get the air it needs it will burn cooler eventually smolder and fill the room with smoke.

Lighting My Fireplace on a Windy Day Seems to Cause Smoke to Come into the House. Initially just burn newspaper as this will create a lot of heat quickly and will move the air upwards. One type of smoking chimney is known as downdraughtand is caused when air is blown back down the chimney.

Downdrafts often occur in. Not every smoky fireplace is caused by blockages in the flue or design errors. Carbon Monoxide can cause serious illness and even death so you must get the problem rectified immediately.

Sometimes gusty weather can blow smoke back down the chimney and out of the appliance. The cause of the smoke can be situational such as the type of wood being burnt of the current outside weather or constant such as a lack of draft up the chimney. If the smoke does indeed come down you have a downdraught problem.

If smoke comes back into the room when your fire is lit your chimney is not working properly and this means gases like carbon monoxide are entering the room. The excess smoke has nowhere to go but back out into your house. Often they are kinked because two or more fireplaces have flues which join a single chimney shaft and have to move laterally to do so.

If your chimney is particularly open to the elements then the cause of the problem might still be the wind. Additionally open fires also take considerable quantities of air to vent the smoke up the chimney. Typically downdraught will only occur when the wind is blowing in.

It may be necessary to slightly crack a window to relieve the negative pressure and allow the chimney to work properly. Rain does come down a chimney.

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