37 Design, installation and repair of building automation and building technology systems; installation services, namely, installation of building automation and building technology systems and equipment; installation, updating and repair of systems, equipment and devices, particularly in the field of building automation and building technology; Maintenance of multi-brand building automation systems that control HVAC equipment, commercial chillers, variable refrigerant flow systems, air handling systems, HVAC unitary systems, fan coil units, unit ventilators, unit heaters, sensible cooling thermal units, replacement coils, commercial boilers and hot water systems, industrial pumps, building controls, building automation systems; Technical planning, research and technical development of systems, equipment and devices, particularly in the field of building automation; technical consultancy services and preparation of expert reports in the field of building automation