Infrared barbeques came from the manufacturing arena where similar devices were invented for applications needing intense and instant heat. Almost by accident, someone tried placing a ceramic infrared burner into a traditional gas grill and liked the results. Infrared grills were born.
Infrared barbeques operate much like any other gas grill, except instead of operating traditional burners, the pressurized propane or natural gas is used to produce infrared radiation. Another difference is direct heating. The rectangular ceramic burners are the surface on which food is placed. Traditional grills use convection heat; they heat the air around the food thereby cooking the food itself.