oil furnace blowing black soot

Soot buildup comes from incomplete combustion. To determine where the failure is: The Effects. When dust gets into the furnace and is blown across the heat exchanger, it can carbonize and turn black. I came home from work Friday to find black soot blowing from the exhaust, completely covering the side of my home. Irregular flame: The furnace’s pilot light should be blue, not yellow. It's from the dust in your air and will probably be there again this year. Oil combustion has been refined for many years now with no smoke at all. It's a myth that modern oil heat is dirty. There is a problem, however, if the soot quickly reappears after a professional cleans it. When a furnace produces soot, it … The oil nozzle could be partly clogged but this will usually cause a lean burn (oil starved), not a sooty burn. That’s not good. I freaked & called the fire department who inspected & said to call a furnace company. My oil furnace is running, but doesn't sound as strong or clear. It is NOT puffing back into the house at all, all of the soot is going outdoors. You could also be starving oxygen to the burner. DAN: I have black soot coming out of my heater through the vent, through the wall. A little oil burner soot (no more than 1/8 inch) after the appliance receives maintenance services is normal. A rumbling noise from the furnace on startup, especially when the furnace has been off for a long time. DAN: It’s coming out of the vent. This will cause a sooty burn. You can see the remains of soot on top of the furnace (lower right), and the fix - someone sealed the opening from which soot was leaking - the draft regulator. Intermittent flame failure shut down. The black soot is a symptom of an incomplete burn. Our photo (left) shows an incompetent and potentially dangerous "fix" to an oil fired heater that was blowing soot all over itself and the furnace room. Soot buildup is not normal for an oil furnace. Soot- black substance formed by combustion or separated from fuel during combustion, rising in fine particles, and adhering to the sides of the chimney or pipe conveying the smoke. It looks like soot but it is not. By continuing to use this site you consent to the use of cookies on your device as described in our cookie policy unless you have disabled them. Question: oil furnace/hot water system started blowing black smoke and smelled of oil (June 26, 2014) Anonymous said: Sorry if this is too specific, but we just moved to an old farmhouse and today the vent (outside) that is connected to the oil furnace/hot water system started blowing black smoke and smelled of oil I called the fire department. We use cookies to give you the best possible experience on our website. Then it gets into the supply ducts. Symtoms are: Burned oil smell in the structure. Although different causes lead to backfires, the effects are largely the same. 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