Air-conditioning installations for industrial purposes; Air-conditioning, air cooling and ventilation apparatus and instruments; Air conditioning installations; Air conditioning installations for vehicles; Air purifying apparatus and machines; Filters for air conditioning; Vehicle climate-control system for heating, ventilation and air-conditioning; Air heating apparatus
Environmental Control ApparatusInstallation and repair of heating, ventilating and air-conditioning systems; Installation and repair of heating, ventilating and air conditioning equipment; Installation, maintenance and repair of air-conditioning apparatus; Installation, maintenance and repair of air-conditioning systems; Maintenance of HVAC systems
Building Construction and Repair