The ENERG+ HEA-215110CVR free standing infrared heater dispenses 500/1000/ 1500 Watts of radiant energy that requires no gas or other flammable fuels. With low operating costs, it is much cheaper to use than a propane heater. It can be plugged into a standard 120-volt 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. A remote control is included and with tip-over and over-heat protection, this unit which can be used indoors, and outdoors is both safe and convenient. This product is backed by a one-year limited warranty.