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If it is white "smoke" then it is probably not smoke at all but only water vapour that is being cooled as it enters the cold air outside the house. It is nothing to worry about as long the heating system is working normally and also as long as you are having the heating system serviced every year by a licensed HVAC (Heating, Ventilation and Air Conditioning) engineer.

Black or blue smoke coming out is another matter altogether and could indicate a dangerous fault in the system. If you see that kind of smoke coming out it is time to call a licensed HVAC engineer to inspect the system and advise you what should be done.

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Related Questions

Smoke coming out of air vents?

Smoke coming out of air vents can indicate a serious issue, such as an electrical problem, overheating components, or a fire in the HVAC system. It’s essential to turn off the heating or cooling system immediately and evacuate the area to ensure safety. Contact a professional technician to inspect the system and resolve the issue. Ignoring the problem can lead to further damage or pose a fire hazard.


Why is there smoke coming out of a small tube from my truck?

Depends ware the tube is located. Could just be over heating


Is the smoke emitted from gas heating worse then smoke from wood heating?

Gas heating does not produce any "smoke" at all. Wood burning, however, produces smoke which is much more toxic than tobacco secondhand smoke. It is best to completely avoid wood heating.


Can a bad catalytic converter cause my 92 lexus to smoke?

No, any smoke is coming from the engine.No, any smoke is coming from the engine.


Why does car smoke?

WHERE IS THE SMOKE COMING FROM ?


Why is white smoke coming from your fuel pump?

white smoke is coming from my exhaust why?


What is the purpose of a chimney in a house?

The purpose of a chimney in a house is to safely remove smoke, gases, and other byproducts of combustion from a fireplace or heating appliance to the outside of the building.


Why the suddenly black smoke coming from the exhaust system in desiel engine?

Due head gasket worn out


Why does rx7 smoke lightly?

An Rx7 is a model of a car that Mazda makes. All cars can smoke lightly through the exhaust system. If the smoke that is coming out becomes excessive or black consult a mechanic.


Why is car not over heating but whitegray smoke is coming out from under hood?

White or gray smoke coming out from under the hood of a car could be the result of a small water leak spraying water on a hot engine. A running engine is naturally hot enough to create steam when water hits it.


How do you keep cigarette smoke outside house?

The only way to keep cigarette smoke outside a house is to smoke outside away from any open doors or windows.


White smoke coming out of exahust when warming up only?

that;s ticky Boo, if black or blue smoke not ok that is condensation that accumulated in the exhaust system evaporating