1798 E. State Road 18 Brookston, Indiana 47923

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7) Is your home too tight?
Fireplaces require large volumes of air to burn. Visualize a 12" x 12" column of air rising up your chimney and exiting the top the entire time your fireplace is working (but don't visualize your heat bill!). This air comes from inside the living area and must somehow be replaced. With modern energy efficiency concerns most houses have been carefully insulated and weather-stripped to keep out the cold drafts, but an undesirable side effect is that there is often nowhere for all that air leaving the chimney to get back in. This can lead to fireplaces that burn sluggishly and smoke. A temporary solution is to open a window to let in a little make up air, preferably on the windward side of the house. It can also lead to very dangerous carbon monoxide buildup if your fireplace and furnace must compete for combustion air, and a permanent solution should be found at once.

8) Your house can also be too loose!
A house that leaks too much air to the outside, especially a multistory house that leaks air in the upper levels, can actually set up its own draft or chimney effect strong enough to overpower your fireplace chimney, particularly if the fireplace is located in the basement on a cold exterior wall. Be sure the attic access door is in place and that all upstairs windows are tightly closed.

9) Is there a return air grill in the same room as the fireplace?
As the fireplace consumes air and cold air moves into the house to replace it, the furnace is likely to come on. When the furnace comes on, air is drawn into the return competing directly with the needs of the fireplace.

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10) The other 91 reasons your fireplace can smoke have to do mainly with design problems when the fireplace was built.
Aside from the chimney being too short, or too small, the chimney can also be too large, too tall, too crooked, etc. A good chimney sweep may be your best bet.
 


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Certified Sweeps Chimney Professionals
1798 E. State Road 18
Brookston, IN 47923

LAN: 765.563.3826
Mobile: 765.426.4163