efficient for large roomspros1 low noise of fan2 inverter friendly3 cools large rooms fastly and easily4 it have aroma chamber in which you can add tablet of frangrance to counter smell of woodwool pads5 it have 2 section for air flow which means you can adjust it to get air for double decker cot equallycons1they should have provided stand of castor wheel for it to move2 it should have ice chamberwill update more about it in future