energy efficient room heaters

portable room heater are typically used when the main heating system is inadequate or when central heating is too costly to install or operate. Although most space heaters work by convection (the circulation of air in a room), some rely on radiant heating. Radiant heaters emit infrared radiation that directly heats objects and people within their line of sight, and are a more efficient choice when you will be in a room for only a few hours and can stay within the line of sight of the heater.