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It all has to do with the draw of smoke out of the fire place and how efficient it will be. For example, a short fat fireplace with a huge chimney would allow lots of smoke to leave via the roof, but it would allow lots of heat to leave too!

But a tall skinny fireplace may not allow enough smoke to rise to cause efficient convection to occur to draw more particulates up the chimney. But there are rules of thumbs for fireplace efficiency and hight of the smoke stacks. Here is a good place to start:

http://www.hearth.com/econtent/index.php/articles/chimney_and_fireplace_sizing/

10 years ago. Rating: 2
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