The company db planetch GmbH is an engineering firm specializing in the planning and consulting of building technology solutions, particularly in the field of heating, ventilation, and sanitation (HLS) for public and private buildings. The core activities include: energy-efficient HLS planning, building physics and energy consulting, planning and design of heating, ventilation, and sanitation systems, energy demand calculations and certifications, and MINERGIE planning. The company offers its services for new buildings, renovations, and refurbishments of residential and commercial properties, as well as public buildings.