Air-conditioning system installation and repair; Air conditioning contractor services; Consultancy services relating to building construction; Consultancy services relating to the construction of buildings; Heating contractor services; HVAC contractor services; HVAC duct cleaning services; Construction consultation; Installation and repair of heating, ventilating and air conditioning equipment; Installation and repair of heating, ventilating and air-conditioning systems; Installation and replacement service for water heaters; Installation of air-conditioning systems; Installation of heating systems; Installation of heating, ventilation and air-conditioning systems; Installation of HVAC systems; Installation of refrigerating apparatus; Installation of heating, refrigerating, air-conditioning, drying, ventilating and dust extraction apparatus; Installation, maintenance and repair of refrigerating apparatus; Maintenance and repair of heating installations; Maintenance and repair of heating, refrigerating, air-conditioning, drying, ventilating and dust extraction apparatus; Maintenance of air conditioners; Maintenance of heating, ventilation, and air conditioning (HVAC) systems; Maintenance of heating, ventilation, air conditioning, and refrigeration (HVACR) systems; Repair and installation services, namely, the installation of heating, cooling and environmental control systems primarily using solar energy, renewable energy resources and rainwater; Repair and maintenance of heating apparatus; Repair and maintenance of heating, refrigerating, air-conditioning, drying, ventilating and dust extraction apparatus; Repair and maintenance of refrigerating apparatus