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A well-constructed and regularly maintained brick chimney can last 50 to 100 years, potentially spanning multiple generations of homeowners. The exact lifespan depends on the quality of construction, materials, local environment, and maintenance. In contrast, a metal chimney typically lasts 15 to 20 years. While the main structure is durable, individual components have shorter lifespans and require more frequent replacement. For example, mortar may need repointing every 20 to 30 years, chimney crowns last 50 to 75 years, and liners can last anywhere from 15 to 50 years depending on the material (e.g., stainless steel vs. cast-in-place).

You can use a fireplace with a broken damper, but only if the damper is in the open position. If not, your fireplace will not properly vent smoke outdoors. Never operate your fireplace if the damper is sealed shut and you cannot open it, as deadly smoke will quickly fill your home. If your fireplace damper is broken, have it repaired or replaced as soon as possible.

Some types of electric fireplaces use more electricity than others. Models that produce 1,500 watts will have more of an effect on your heating bill than 750-watt models. 

Electric fireplaces use an average of $1.85 of electricity every eight hours. These minimal operational costs aren’t likely to make a big difference in your electric bill—unless you’re using it as a primary heating source for your home and it’s running most of the time.

If your gas fireplace is vented through a chimney, a chimney cap is highly recommended. While not all gas fireplaces require a traditional chimney, for those that use one, a cap provides several key benefits. It prevents rain, debris, and animals from entering the chimney, which can cause blockages or damage. A cap also helps prevent downdrafts that could push harmful gases like carbon monoxide back into your home. When installing a cap, ensure it is appropriate for a gas fireplace and does not restrict proper ventilation.