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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.

Both wood-burning stoves and fireplaces can emit smoke and other combustion gases that are harmful to human health. According to the American Lung Association, wood smoke can lead to coughing and wheezing as well as long-term health impacts like increased risks for heart attacks and stroke. 

Newer models meet the modern efficiency standards set in 2020 by the Environmental Protection Agency for cleaner burning, more efficient wood stoves. Regular maintenance can also minimize smoke.

You can close up a chimney instead of demolishing it. Homeowners often go this route because the cost of removing a chimney, especially a structurally important chimney, can be expensive.

Properly closing up a chimney involves closing and sealing the damper, installing a chimney cap damper, and sealing the fireplace opening with a door or bricks. The cost to seal and cap a chimney is around $500 to $650—significantly less than the average chimney removal cost.

Avoid using abrasive cleansing powders on natural stone, as these products could damage the porous material. Using bleach is also a poor idea because of the porosity of the stone. Avoid using a scrub brush with metal bristles, as they could scratch the stone. If you know who manufactured your stone or who installed the fireplace, you may want to contact that entity for any advice on cleaning it safely.