Air conditioning contractor services; HVAC contractor services; Installation and repair of heating, ventilating and air conditioning equipment; Air conditioning apparatus cleaning services; Home energy assessment services for the purpose of determining home improvements needed to improve energy use and efficiency; Heating equipment installation and repair; Installation, repair and maintenance of heating equipment; Maintenance of HVAC systems, heat pump systems, heat recovery systems, variable refrigerant flow systems, air handling systems, and HVAC unitary systems; Technical support services, namely, technical advice related to the repair of HVAC systems, heat pump systems, heat recovery systems, variable refrigerant flow systems, air handling systems, and HVAC unitary systems; Technical support services, namely, technical advice related to the installation of HVAC systems, heat pump systems, heat recovery systems, variable refrigerant flow systems, air handling systems, and HVAC unitary systems