What device is used to regulate drafts in a fireplace?

A damper is a critical device used in fireplaces to regulate drafts. It is typically a movable plate located within the chimney that can be opened or closed to control the amount of air and smoke that flows through the flue. By adjusting the damper, you can enhance the efficiency of the fireplace by optimizing combustion and controlling heat output. When the damper is closed, it prevents cold air from entering the home through the chimney when the fireplace is not in use, thus improving energy efficiency. Conversely, when the fireplace is in use, opening the damper allows for proper venting of smoke and gases, ensuring a safe and effective fire.

Other options, while related to the functionality of a fireplace, do not serve the same purpose. A fan can help in circulating warm air generated by a fire, but it does not regulate drafts directly. A chimney cap can prevent rain and debris from entering the chimney but is not used to control airflow. A flue cover serves to seal the top of the chimney but does not provide the adjustable airflow control that a damper does. Thus, the damper remains the essential component in managing drafts effectively.