Dominik Andreas Berchtold

Part of Zehnder Group AG, Zehnder Group Nordic AB is a Swedish company that wholesales industrial machinery.

Part of Zehnder Group AG, Zehnder Group Lenham Ltd. is a roofing materials manufacturer based in Maidstone, UK. The British company's board monitors the business activities to ensure that their executive team oversees processes that deliver for their wider stakeholders. Marley Ltd also has a long history of almost 100 years and is committed to reducing the impact on the environment. Founded in 1996, the private company is at the forefront of the industry, offering a fully warranted roof system and a fully integrated solar energy solution.

The Viessmann Group is engaged in manufacturing heating and cooling systems. It offers investment, real estate, climate, refrigeration and industrial solutions. The company was founded by Johann Viessmann in 1917 and is headquartered in Allendorf, Germany.

Nu-Air Ventilation Systems, Inc. operates as a contractor, wholesaler, builder and developer of heating, ventilation, and air conditioning systems. Its products include Enerboss integrated air handlers and fan coils, integrated fireplace, residential and commercial heat recovery ventilators and energy recovery ventilators, air exchangers and passive heat recovery ventilators. The company was founded by Earl Caldwell in 1992 and is headquartered in Windsor, Canada.

Part of KPMG International Cooperative, KPMG Fides Peat AG is a private company based in Bern, Switzerland.