Which of the following is acceptable when installing a Fireplace insert?

The installation of a fireplace insert requires careful consideration of the venting system to ensure safety, efficiency, and compliance with building codes. A metal chimney liner is an acceptable option for this purpose.

Metal chimney liners are designed to handle the higher temperatures produced by modern fireplaces and inserts, reducing the risk of creosote buildup and fires. They are also equipped to withstand corrosive byproducts from burning fuel, thus offering greater durability and longevity. Using a metal liner helps maintain the necessary draft for efficient combustion and minimizes the risks associated with venting exhaust gases.

In contrast, other options such as a wooden flue liner, open chimney systems, or plastic venting do not meet the safety standards required for venting fireplace inserts. Wooden flue liners are not suitable due to their flammability and tendency to degrade over time, open chimney systems may allow smoke and gases to escape improperly, and plastic venting materials cannot withstand the high temperatures associated with fireplace operation. Therefore, selecting a metal chimney liner aligns with the best practices for safe and effective installation of a fireplace insert.