Experience customizable warmth and comfort with the Costway 18 Inch Electric Fireplace Insert. This efficient heater outputs 5000 BTU, effectively warming up to 400 sq.ft. Choose between two heating options (750W and 1500W) and enjoy the convenience of a 65℉-95℉ thermostat for optimal energy savings. With three flame colors and five brightness levels, you can create the perfect ambiance. Safe to use with overheat protection and ETL certification, this quiet electric heater features both remote and control panel access for easy operation. Set your desired heating time with the built-in timer ranging from 0.5 to 9 hours.