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Posted by Henry in MI on February 3rd, 2003 10:25 AM
In reply to Black Smoke from Furnace chimney by Steve on February 3rd, 2003 07:18 AM [Go to top of thread]

Steve, combustable things (the fuel) need air to burn and make water vapor when they do. The water vapor will show as white smoke, actually steam, under some conditions.

When you do not have complete combustion--not enough air for the amount of fuel--a black smoke containing soot and other nasty things appears. Therefore, your black smoke is either too much fuel or not enough air getting to the fire.

Henry in MI

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