11 AIR CONDITIONERS; FURNACES; HEAT PUMPS; VENTILATING UNITS; AIR HANDLERS; BLOWER COILS FOR AIR CONDITIONING UNITS; PACKAGED HEATING/COOLING UNITS CONSISTING OF AN EVAPORATOR SECTION FOR COOLING AIR AND A HEATING SECTION FOR HEATING AIR, SOLD TOGETHER AS A UNIT; REFRIGERANT CONDENSING UNITS; EVAPORATOR COILS FOR AIR CONDITIONING UNITS; AND REPLACEMENT PARTS FOR THE FOREGOING, BUT NOT INCLUDING EVAPORATIVE COOLERS