Section 16 Machinery and mechanical appliances; electrical equipment; parts thereof; sound recorders and reproducers, television image and sound recorders and reproducers,and parts and accessories of such articles 84 Nuclear reactors, boilers, machinery and mechanical appliances; parts thereof 84 15 Air conditioning machines,comprising a motor-driven..,incl those machines.... 84 15 81 Incorporating a refrigerating unit and a valve for reversal of the cooling/heat cycle Commodity Code Description 84 15 81 00 Incorporating a refrigerating unit and a valve for reversal of the cooling/heat cycle