An electric fireplace insert is a device that can be added to an existing fireplace to convert it from wood or gas to electric. Electric fireplace inserts have LED lighting, adjustable flames, and optional heat output. They can also be used with authentic-looking logs or contemporary fire glass media. 

An electric fireplace is an electric heater that looks like a traditional fireplace but doesn't burn fuel or produce smoke. Electric fireplaces use LED lights, mirrors, and/or video to create the appearance of actual fire. Some models use fans and water vapor to create smoke. Many electric fireplaces have thermostats and remote controls for adjusting the heat and flame intensity. Some models can be controlled with a smart device.