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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).

Yes, you should seal and cap an unused chimney to protect it from damage. Sealing the structure helps prevent moisture damage, which can lead to issues like cracks, spalling, efflorescence, and damaged mortar joints. Capping the chimney is also crucial to prevent blockages, damage from invasive critters, and downdrafts, while still allowing for proper air ventilation to manage moisture. For the best results, consult a chimney professional to select the right type of chimney or flue cap for your home. It's also wise to continue with annual chimney inspections to maintain the structure's integrity.

Gas fireplace inserts are considered the most efficient because they convert more of the fuel source—gas—into heat. They offer excellent heat output per the amount of fuel they use. While electric fireplace inserts are praised for their efficiency, keep in mind that they don’t offer as strong a heat output but may still be a great choice if you want an efficient option.

In homes that have a gas furnace, it's typically the heating system that uses the most gas. That explains why your gas bill is almost always higher in the winter and other colder months than it is in the summer. Other appliances that may use gas include your water heater, clothes dryer, and stove.