The Vornado 1500W AVH2 Vortex Smart Heater uses automatic climate control which adjusts heat output and fan speed higher or lower at all times to maintain the set temperature. Designed to cover whole room.  Top-mounted, push button controls. Advanced safety features include cool-touch cabinet and grill, and non-glowing heating element. Dimensions: 11.87" H x 9.50" W x 11.75" D. Maximum output: 5,122 BTU's per hour on high heat; 2,559 BTU's per hour on low heat, at maximum temperature. Usage: Large Room - 16 x 16 feet with 8 foot ceiling.  Watts=800/1500.  2 Heat Settings.  Color - Black.