Unvented gas log heaters can only be installed in which type of fireplace?

Unvented gas log heaters are specifically designed for installation in factory-built fireplaces due to their construction, safety features, and performance characteristics. Factory-built fireplaces are engineered to accommodate the unique demands of unvented gas appliances, including proper heat dissipation and air circulation. These fireplaces typically include ventilation and combustion air provisions that ensure the safe operation of the gas logs without the need for additional venting to the outside.

Using unvented gas logs in other types of fireplaces, such as open, wood-burning, or traditional brick fireplaces, can present safety hazards. These fireplaces may not provide the necessary airflow or exhaust mechanisms, increasing the risk of dangerous indoor air quality issues, such as carbon monoxide buildup. Therefore, the installation of unvented gas log heaters is limited to factory-built fireplaces that are specifically tested and approved for their use, ensuring a safe and effective heating solution.