ClassicFlame 33II310GRA 33" Infrared Quartz Fireplace Insert with Safer Plug 5,200 BTU heater provides supplemental zone heating for up to 1,000 square feet;Electronic timer function: automatic timed shut off from 30 minutes up to 9 hours Flame effect can be operated with or without heat, providing the ambiance of a gentle rolling fire all year long Spectrafire Plus offers 125 selectable flame effect options to create the perfect mood and ambiance for any style The infrared heat helps to maintain the natural humidity within the air, resulting in moist, comfortable heat without drying out the room's air Adjustable thermostat allows you to decide the temperature of your room