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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.

Modern wood-burning stoves are very effective, reaching around 80% efficiency. That’s because models built after 1988 are designed to meet standards set by the U.S. Environmental Protection Agency to operate more efficiently and produce less air pollution. If you have an older wood stove, it may not be as efficient.

To maintain a stove, clean the stove, chimney, or vent regularly. You should also use seasoned wood or pellets. Schedule an annual professional inspection to ensure safety.

In some cases, you can use a fireplace once the insert has been removed. However, before burning a fire, you must have a professional inspect it and the chimney to make sure they're functioning properly and no damage has occurred from removing the insert. That’s because using a fireplace without an insert could create fire hazards due to issues with airflow and heat dispersion, depending on the fireplace design and material. A professional can advise on whether you should make certain repairs or modifications before using your fireplace as an open hearth.