The innovation of the FIRE 155 infrared heater lies in the elimination of the refractory material cone that surround the conical combustion chamber typical of other competitor’s units. This heater features a metallic forced air insulation pocket between the combustion chamber and the external protection cone. The cooling air is blown through the pocket by the burner fan. This innovative technology overcame the well known problem of the fragility and brittleness of the ceramic cone. Moreover there is a relevant improvement in the cooling of the cone.