Air-conditioning apparatus; Air-conditioning, air cooling and ventilation apparatus and instruments; Air conditioners; Air conditioning apparatus; Air conditioning installations; Air conditioning units; Boilers for heating installations; Cooling units for industrial purposes; Acetylene burners; Air cooling apparatus; Air-conditioning, air cooling and ventilation apparatus and instruments; Central air-conditioning installations; Components for air conditioning and cooling systems, namely, evaporative air coolers; Components for air conditioning and cooling systems, namely, evaporative air coolers; Drying apparatus for use in heating, ventilation systems, air conditioning systems and refrigeration systems; Economisers, namely, devices for warming feed water in heating boilers; Electric boilers; Electrical boilers; Fans for air conditioning apparatus; Furnace boilers; Gas burners; Gas burners for domestic, commercial and industrial uses; Heating boilers; Heating systems for residential and commercial buildings comprised of boilers, valves, pipes, manifolds, control panel switches, and electrical wire, all sold as a unit; Heating systems for residential and commercial buildings comprised of boilers, valves, pipes, manifolds, solar panels, control panel, switches and electrical wire, all sold as a unit; Heating systems for residential and commercial buildings comprised of biomass burners, boilers, valves, pipes, manifolds, solar panels, control panels, switches and electrical wire, all sold as a unit; Heating systems for residential and commercial buildings comprised of biomass burners, boilers, valves, pipes, manifolds, solar panels, control panels, switches and electrical wire, all sold as a unit; Ignition systems comprised of a gas supply tube with a nozzle and an electrical igniter to create a flame at the nozzle for industrial applications, namely, for igniting waste gases being discharged from industrial stacks and for igniting gas-fired boilers; Industrial boilers; Oil and gas burners for domestic, commercial and industrial uses; Oxyhydrogen burners; Parts for heating and air conditioning systems, namely, heater cores and gas coolers for vehicles; Pipes for heating boilers; Radiators