Does an electric fireplace really heat a room?
Our electric fireplaces use a 5000 BTU 1500-watt heater as the source of heat for the fireplace, with a fan blower to expel the heat into the room through the vent. Our fireplace has enough power to warm a small area or section of a larger room, however it will not heat your entire house.
Is it okay to leave an electric fireplace on overnight?
Electric fireplaces are basically space heaters; it is alright to leave them on overnight if the space where it is located needs supplemental heat. For safety concerns, it would not be advisable to leave them on when you leave the home or building where it is located.