Air-conditioning apparatus and installations; Air-conditioning installations; Air conditioning apparatus and installations; Air conditioning apparatus for industrial use; Air conditioning installations; Air conditioning units; Components for air conditioning and cooling systems, namely, evaporative air coolers; Evaporators for air conditioners; 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 boilers, valves, pipes, manifolds, solar panels, control panel, switches and electrical wire, all sold as a unit; HVAC units; Ice machines and apparatus; Mounting brackets adapted for window-mounted air conditioners; Central air-conditioning installations; Safety accessories for gas pipes, namely, flashback arrestors and reverse flow check valves