This HEA-215110CVR free standing heater uses radiant infrared energy that requires no gas or other flammable fuels; it can be plugged into a standard 120V AC wall outlet and is water and dust resistant. Infrared heat is safe for the environment with zero carbon monoxide emissions and hardly affected by wind, making this unit cost effective and environmentally friendly. With triple power wattage settings it can be set to radiate 500,100,or 1500W; it also comes with a remote control.