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The lifespan of a chimney damper depends on several factors, including its material, how often the fireplace is used, and the amount of debris that enters the chimney. With proper maintenance, an average damper can last about 20 years. To ensure it is functioning correctly, it is best to have it professionally inspected. Some experts recommend an annual inspection, while others suggest having a chimney sweep inspect and clean it every two years. A professional can assess the damper's condition and determine if a replacement is necessary.

Wood is classified as either hardwood or softwood. For firewood, hardwoods are generally the best choice as they tend to burn longer, hotter, and produce less smoke than softwoods. Recommended hardwoods include oak, hickory, maple, cherry, ash, beech, birch, elm, and walnut. Oak is a particularly good option as it's widely available, slow-burning, and doesn't produce much smoke or sparks. Some woods, like oak, hickory, and cherry, also emit a pleasant scent. It is best to avoid softwoods such as eucalyptus, poplar, and willow, as they create a lot of smoke and have a high moisture content that makes them difficult to light and burn efficiently.

You can burn wood with oak wilt, as heat from the fire destroys the fungus, and smoke won’t threaten healthy trees. However, wood of unknown origin should be burned during the dormant season—do not store wood in the warmer months for the winter season. If you harvest oak, let it dry in the sun before transporting it elsewhere.

You should only use water to put out a fire in your fireplace in an emergency situation. Even then, it is better to use a fire extinguisher to put out a fire quickly. Make sure every room in your house that has a fireplace also has a fire extinguisher—and that everyone in your household knows how to use one.