Heated glass is a tempered piece of glass with an invisible metal coating. The resistive qualities of the coating creates radiant heat when a controlled electric current is applied to the conductive coating. The electric current in the resistive coating generates radiant energy which warms the glass until the glass radiates heat in the infrared range. The radiant heat does not directly heat the air. Radiant heated glass heats the objects and people in the room and has an efficiency at least 25% greater than forced hot air systems.
