SUNLINE Crystal Infrarotheizungen


Due to its natural capacity, glass has the excellent ability to convert conducted energy into long-waving infrared heat. DIRECTTECH CRYSTAL heating panels are very light and offer various interesting possibilities of design. DIRECTTECH CRYSTAL connects comfortable indoor climate and modern design with low energy consumption. A vision becomes reality.

Design and function

DIRECTTECH CRYSTAL heating panels are characterized by their low depth in construction and therefore suitable for the various uses at walls and ceilings. The installation is possible with different profiles in different colors and sizes or as fitted heating panel. For commercial use there are available special panels for an easy installation in Odenwald ceilings.


DIRECTTECH CRYSTAL heating panels are equipped with heat-resistant glass. They are available in the following base colors: white, black, blue, red, green, yellow, orange, purple, light blue. Once chosen the ones that suit you, they can easily be integrated in the surroundings. Black and white are our standard colors.

Highest efficiency

An installation below the height of 1,80m requires a maximum surface temperature of 100 °C according to the standard DIN EN 60335. This is reached through activating the safety switch, called „Limiter”, that takes place at an inside temperature of 100 °C.
The Installation above the height of 1,80m allows higher temperatures, so that the entire efficiency of the long-waving infrared radiation can be utilized, that takes place at a temperature of 120 °C. DIRECTTECH CRYSTAL heating panels of DIRECTTECH activate the safety switch at an inside temperature of 130 °C and regarding the IP models at 160 °C. Hereby, the highest efficiency is guaranteed.

Safety factor

Is the defined maximum temperature reached by the heating technique in the interior system, the internal safety switch “Limiter” is activated and the temperature is reduced. The maximum operating temperature is below the cut-off safety temperature and can vary due to environmental conditions, e.g. supply voltage, ambient (room) temperature and environmental humidity.

Frame profiles

The standard version is matt silver anodized. Further variations are available for an extra charge. The special profile Flansch is ideally suitable for wall- and ceiling installations.