chimney damper

Close all the other windows, all entry doors and the chimney damper if there is one.

Close the fireplace chimney damper between fires to keep warm air in during the winter and out during the summer.

Altering the chimney damper changes the pressure condition in the kiln, thereby controlling the amount of secondary and primary air.

Chimney dampers, baffles or restrictive plates must be removed or permanently fixed open.

For example, many modern designs of fireplace include chimney dampers to control air flow up the chimney increasing the useful heat output.

If you have a fireplace, keep the chimney damper closed when no fire is burning, or else consider installing glass fireplace doors to seal the entire opening.

Chimney Dampers - The proper use and operation of the chimney damper can dramatically reduce the chimney effect.

If that is not feasible, Mr. Goldstein said, people with fireplaces in their homes should be fastidious about keeping the chimney damper closed when the fireplace is not in use.

"If people don't have a rain cap, water runs down the inside of the chimney liner, it becomes acidic, and then the acid eats away at metal components like the chimney damper," Mr. Eldridge said.

A chimney damper is a metal plate that can be positioned to close off the chimney when not in use and prevent outside air from entering the interior space, and can be opened to permit hot gases to exhaust when a fire is burning.