How often should I clean the air filter on my LG L3UC482FA0?

The air filters should be checked and cleaned once every 2 weeks or more often if necessary. To clean, remove the filter by lifting the front access panel and pulling the filter tab slightly forward, then clean with a vacuum or warm, soapy water. After washing, dry well in the shade before reinstalling. A dirty filter reduces the efficiency of the air conditioner and could cause product malfunction or damage. (Page 21)