• Technical



Trench heating. Mini trench heating.

Bis zu 25% weniger Heizkosten, 100% mehr Behagleichkeit
Variotherm technology, proven ten thousand times over.
For 37 years.

Up to 25 % lower heating costs with the right choice of heating and cooling panels.
Variotherm surface heating and cooling systems work at a low temperature, which is of great advantage when used with alternative energy sources such as heat pumps, solar-supported heating, solar cooling, biomass and other backup storage systems.

100 % more comfort with 1 - 3 °C lower room air temperature.
Beheizte oder gekühlte Flächen erzeugen angenehme, gesundheitsfördernde Strahlungswärme. In diesem behaglich empfundenen Raumklima kann die Lufttemperatur im Raum um bis zu 3 °C niedriger (bzw. bei Kühlung höher) eingestellt werden. Das spart deutlich Energie und reduziert die Wärmeverluste des Gebäudes nach außen.

Healthy radiant heat. Based on the principle of the sun's rays.
The heat is transferred not through the air, but – just like the sun – through gentle infrared radiation. The enormous advantages: No draughts. No dust stirred up. Comfort – all the time and everywhere.


Variotherm trench heating systems are essential wherever there are large glass surfaces. They ensure pleasant, cosy heat and shield cold glass surfaces. Variotherm trench heating systems are sunk into the floor in front of glass doors and large glass surfaces. They create a veil of hot air along cold glass surfaces, separate the room air from the cold and make rooms cosy in minutes.

Trench heating


  • Linear or roll grids in three different colours 
  • Efficiently shields against the cooling effect of glass surfaces
  • Very fast response
  • Visually discreet – individual room use is not compromised in any way
  • Lengths are produced exactly to your requirements
  • Guaranteed short delivery times
  • 10 year guarantee
More Variotherm technology