Elstein HTS High Temperature Heaters are ceramic infrared panel heaters, which can be used for operating temperatures up to 900 °C and surface ratings up to 64 kW/ m². HTS series heaters are produced using a hollow-casting ceramic process and are filled with thermal insulation material. This improves the radiant power output to the material to be heated. Furthermore, there is a significant reduction in heat dissipated in the wiring space, so that additional insulation of the heating area is usually not required. Compared with IR heaters, which are produced by using full-poured casting processes, HTS heaters have a considerably reduced heating-up time and, depending on the type of application, enable energy savings of up to 25 %. Elstein HTS high temperature heaters are available in four designs and cover the power range from 60 W to 1000 W.