Hello friend I can say that lg means life good in window ac is proved dual protection filtet energy saver on off time auto resat theae ac speacial fine mesh filter kills the bacteris in the air that passes thriugh it inhibts any germ growth it is also catch all the dust particles in the air on off time is also used in window ac the time allows your to turn on off the ac at the time of your choise for an un disttubrid these ac star reating 1and colling watt 2400compress rorary noise leavel 45cop 2.55