HVAC contractor services; Air conditioning contractor services; Heating and cooling contractor services; Installation and repair of air conditioning apparatus; Installation and replacement service for heating, ventilating and air conditioning systems; repair and installation of furnaces, hot water heaters, air-conditioners, humidifiers, air-cleaners and thermostats; Installation, maintenance and repair of building automation systems, building energy management systems, and temperature control systems; construction consultancy regarding the equipping of buildings, commercial refrigeration systems, cold storage warehouses, and production facilities for production processes, with cooling units and air-conditioning systems; installation and maintenance of process controls, refrigeration controls, control systems and thermal components, mechanical systems and compressors; installation and maintenance of power and utility system for others; installation and maintenance of chilled water, hot water, steam, compressed air, water treatment and power generation systems for others; construction project management services, namely, budgeting, constructability reviews, estimation and feasibility studies; building construction services in the field of in commercial, industrial, and construction projects; installation, repair and maintenance of heating equipment, namely, boilers; electrical contracting services; installation and maintenance of HVAC systems; repair and installation services, namely, the installation of heating and cooling air ducts; plumbing services

Engineering; Engineering design services; Engineering surveying; Industrial design; Industrial and graphic art design; Architectural and engineering services; Civil engineering; Conducting engineering surveys; Consulting in the field of engineering; Consulting in the field of structural engineering; Electrical engineering; Mechanical engineering; Structural engineering design services