Stefan Borchers

Turk Demir Dokum Fabrikalari AS manufactures and markets heating and cooling systems. It offers heating and cooling apparatus ranging from panel radiators, water heaters, central heating system, individual heating system and air conditioners. It operates through a brand of Heat Comfort. The company was founded by Vehbi Koc on September 29, 1954 and is headquartered in Istanbul, Turkey.

Vaillant Management Ltd. provides heating equipment. The company was founded in 2000 and is headquartered in Rochester, GB

Vaillant GmbH engages in the manufacture and distribution of heating ventilation and air-conditioning products. The firm offers solar-thermal and photovoltaic systems, heat pumps, and pellet boilers. It also provides gas-fired condensing boilers, ventilation systems for low-energy buildings, combined heat and power stations, high-efficiency heating systems using fossil fuels, intelligent controls, air conditioners, and radiators. The company was founded by Johann Vaillant in 1874 and is headquartered in Remscheid, Germany.

Vaillant Group UK Ltd. supplies heating solutions, hot water, central heating and air conditioning systems. Its products include combi, open vent controls and accessories, cylinders, air to water heat pumps, air to water hybrid system, ground source heat pumps and solar thermal. The company was founded in 1874 and is headquartered in Belper, the United Kingdom.

Vaillant Marketing GmbH provides marketing services. The private company is based in Remscheid, Germany. The CEOs of the German company are Tillmann von Schroeter, Andree Groos, Stefan Borchers.