How should a factory-built fireplace be installed in a two-story residential dwelling?

The installation of a factory-built fireplace requires adherence to the manufacturer's specific instructions, as they provide detailed guidelines that are critical for ensuring safety and functionality. These instructions are tailored to the particular design and specifications of the fireplace unit and often include important information about clearances, venting requirements, and the types of materials to be used during installation. Following manufacturer instructions helps ensure compliance with safety standards and can also affect the warranty on the fireplace.

While local building codes do play an essential role in construction and installation practices, they may not cover all the unique aspects of a specific factory-built fireplace. Compliance with these codes should occur in conjunction with, not instead of, following the manufacturer's recommendations.

Using non-combustible materials may be part of the manufacturer's instructions and also aligns with code requirements, but it is not a standalone rule – it is integral to specific application scenarios as outlined by the manufacturer.

The involvement of a licensed contractor could facilitate proper installation, but it is not inherently necessary unless mandated by local regulations. Following manufacturer guidelines remains the primary focus in guaranteeing that the fireplace is safely and effectively installed, making why that choice is the best option clear.