Class 035
Advertising, Business & Retail Services
Heat loss calculations and heat gain calculations; duct sizing and design; duct installation; furnace sales, installation, repair and maintenance; tank type water heater sales, installation, repair and maintenance; tankless water heater sales, installation, repair and maintenance; gas piping design and installation; gas barbecue and appliance hook-up; gas appliance maintenance and repair; gas meter service application submissions; heat recovery ventilator system design and installation; heat recovery ventilator repair and maintenance; humidifier sales, installation, repair and maintenance; air conditioner sales, installation, repair and maintenance; air filtration system sales, installation, repair and maintenance; and pool heater sales, installation, repair and maintenance.
Class 037
Construction and Repair Services
Providing advice and information about customer services and products on internet website in connection with heating and ventilation services.
Class 042
Computer & Software Services & Scientific Services
