The Vaillant Group is an international family-owned company with more than 136 years of tradition. Its core business is heating technology. With annual sales of € 2.3 billion, the Vaillant Group is the second-largest European company in this branch. In addition, the Vaillant Group is active in the branches of ventilation and air- conditioning technology. With about 12,400 employees they develop and manufacture products at 14 sites in eight countries. The Vaillant Group sells them via own sales companies in 20 countries. Furthermore, they export products in 60 countries. Their business in highly efficient technologies and products based on renewable energies is a growth driver. In particular, against general market trends Vaillant significantly increased its sales of condensing technology, heat pumps and solar thermal systems.