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For many people, the primary disadvantage of a gas fireplace insert is that it doesn’t look or smell like a classic wood-burning fire. Additionally, the labor costs of installing a gas insert are higher than some other types of fireplace inserts, including electric and pellet inserts. There are also limitations on where you can install ventless gas fireplaces because they’re banned in certain places (including California).

A properly constructed and maintained chimney crown can last 50 to 75 years. However, its lifespan can be significantly shorter—20 years or less—if it was poorly constructed, improperly installed, or damaged. Factors like using the wrong materials or failing to prepare the brick around the flue can lead to moisture buildup and premature breakdown, potentially resulting in a more costly rebuild.

Once your ashes have fully cooled, you can place them in a heavy-duty trash bag and put them into the bin with your normal trash. If you have wood ash, you can add the ash to your composting pile or sprinkle it over your grass or plants directly for added nutrients.

Chimney liners often benefit from insulation, though it is not always required. Insulation helps improve the liner's efficiency by keeping flue gasses hotter, which enhances draft and reduces creosote buildup. It also prevents condensation, which can lead to corrosion. Insulation is important for chimneys on exterior walls or in colder climates. Some building codes may require insulation, so checking local regulations is essential.