Heating contractor services; Heating equipment installation; HVAC contractor services; Air conditioning apparatus installation and repair; Boiler cleaning and repair; Heating equipment installation and repair; Installation and repair of air conditioning apparatus; Installation and repair of air-conditioning apparatus; Installation and repair of air-conditioning systems; Installation and replacement service for water heaters; Installation and replacement service for heating, ventilating and air conditioning systems; Installation of air-conditioning apparatus; Installation of air-conditioning systems; Installation of heating, ventilation and air-conditioning systems; Installation, maintenance and repair of air-conditioning apparatus; Installation, maintenance and repair of air-conditioning systems; Repair and maintenance of heating apparatus; Repair and maintenance of heating, refrigerating, air-conditioning, drying, ventilating and dust extraction apparatus; Repair of household appliances and of residential heating, plumbing, air conditioning, and electrical systems; Repair or maintenance of boilers; Repair or maintenance of gas water heaters; Advisory services relating to the installation of heating and cooling apparatus; Cleaning and repair of boilers; Installation and repair of heating equipment; Installation and repair of heating, ventilating and air conditioning equipment; Installation and repair of heating, ventilating and air-conditioning systems; Installation and repair of floor heating apparatus; Installation of heating apparatus; Installation of heating equipment; Installation of heating systems; Installation of HVAC systems; Installation of heating and cooling apparatus; Installation, repair and maintenance of heating equipment; Installation, repair and maintenance of condensing apparatus, steam condensers, radiators for motors and engines, air reheaters, boiler tubes; Installation, maintenance and repair of heating apparatus; Installation, maintenance and repair of heating systems; Maintenance and repair of heating apparatus; Maintenance and repair of heating installations; Maintenance and repair of heating, refrigerating, air-conditioning, drying, ventilating and dust extraction apparatus; Providing information relating to the repair or maintenance of boilers; Providing information relating to the repair or maintenance of gas water heaters; Provision of information relating to the repair or maintenance of boilers; Provision of information relating to the repair or maintenance of gas water heaters; Repair and installation services, namely, the installation of heating, cooling and environmental control systems primarily using solar energy, renewable energy resources and rainwater; Repair of heating apparatus