Air cleaning units; Air cleaning units containing an air filter, ultraviolet lights and a photocatalytic filter; Air conditioners; Air conditioning apparatus; Air conditioning apparatus and installations; Air conditioning installations; Air conditioning units; Air cooling apparatus; Air handlers; Air purification units; Air purifiers; Air purifiers; Air purifying apparatus; Air purifying apparatus and machines; Air-conditioning apparatus; Air-conditioning apparatus; Air-conditioning apparatus and installations; Air-conditioning installations; Air-conditioning, air cooling and ventilation apparatus and instruments; Central heating radiators; Electric air sanitizing unit; Electric space cooling apparatus; Evaporative air cooling units for domestic use; Heating and cooling panels used for indoor heating and cooling purposes; Heating boilers; Heating elements; Heating furnaces; Heating installations; Heating panels used for indoor heating purposes; Heating systems composed primarily of tubes, pipes and manifolds through which warm or high temperature water circulates; Heating systems composed primarily of tubes, pipes and pre-assembled manifolds through which cold or low temperature water circulates; 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 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 units for industrial purposes; Hot-air space heating apparatus; Hot-water space heating apparatus; Indoor radiant heating systems