U.S. Government Federal Law prohibits removal of this label before consumer purchase. Room Alr Conditioner 1G Electronics USA, Inc (LG) Without Reverse Cycle Model LW1521ERSM With Louvered Sides Capacity : 15.000 BTU $123 — Cost Range of Similar Models 11.8 Combined Energy Efficiency Ratio Your cost will depend on your utility rates and use. ® Cost range based only on models of similar capacity without reverse cycle and with louvered sides.