What Causes a Downdraft in a Fireplace?

Answer

Downdraft is caused mainly by the close proximity of trees or tall buildings, which cause disturbance in the air current. The second cause can be the prevailing weather conditions, which cause a phenomenon called 'spring and autumn syndrome' whereby the outside temperatures rises while the inside of the house remain cool. Lastly, a dirt chimney may also initiate the downdraft effect.
Q&A Related to "What Causes a Downdraft in a Fireplace"
The warm air flowing up the chimney must be replaced in the living space with air from other sources. This commonly comes from air leaking in through doors and windows. In a tightly
http://www.ehow.com/info_12117490_causes-chimney-d...
Usually as the chimney is blocked, mainly by a build-up of soot from previous fires.
http://wiki.answers.com/Q/What_causes_a_smoky_fire...
Welcome back Alice, as far as using a different manual I would say it wont work for use or replacement parts. Kitchen/bathroom exhaust fans, clothes dryers, and the boiler/furnace
http://en.allexperts.com/q/Chimney-Fireplaces-3286...
While updrafts are still present,
http://www.chacha.com/question/what-is-caused-by-t...
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