Don't Let Your Fireplace Put Smoke in Your Home
A fireplace that allows smoke to escape into the room (back
puffing) is a nuisance and a downright danger because fireplace
smoke carries odorless but deadly carbon monoxide. Diagnosing
the cause of your smoky fireplace is essential to finding the
most efficient and cost effective solution to your back puffing.
Here's what to do if your fireplace smokes:
First, make sure the fireplace is getting enough air to replace
the hot gasses it is sending up the chimney. Shut off any
exhaust fans than may be running, even upstairs in your home.
Those exhaust fans are pulling household air (or maybe your
fireplace's smoke) to the fans. If shutting off exhaust fans
doesn't stop the back puffing, open a door or window near the
fireplace to see if that corrects the problem.
If the fireplace allows smoke to escape into your room only on
windy days, the answer is to install a Vacu-Stack
Chimney Cap. As the wind passes through the Vacu-Stack
chimney cap, it creates a vacuum above the flue. The harder the
wind blows, the harder the Vacu-Stack "pulls" the smoke up your
chimney, so all the smoke goes up your chimney and none goes
into your room.
If the smoky fireplace problem happens on calm days, too, there
are three things you can do, in the order of the least expensive
and the least certain to the most expensive and absolutely
certain:
* If the area of your fireplace at the front (width multiplied
by height, in square inches) is more than ten times the area of
your flue, you can install a Smoke
Guard to reduce the size of the fireplace opening. (To
compute the area of your flue, if it is rectangular or square,
multiply the flue's length by its width. If it is a round flue,
use the radius, which is half of the diameter. Multiply 3.14 x
radius x radius.) Installing a Smoke Guard can better proportion
the opening of your fireplace, allowing the flue to work more
efficiently, eliminating your smoky fireplace problem. The Smoke
Guards come in either brass or black.
* If the first step, increasing the air supply works, you can
install a small vent to let fresh air into the room where the
fireplace is.
* To cure any and all back puffing problems, you can install an
Exhausto
Fan . An Exhausto is a weatherproof exhaust fan that mounts
on the top of your chimney. These powerful fans create a forced
air draft that pulls the smoke up the chimney, ending forever
the problem of a smoky fireplace.