Here are five common mistakes people make while using an AC during the rainy season and how to avoid them. Using Cool mode all the timeOne of the most common mistakes is keeping the AC on Cool mode throughout the rainy season. Also read: Split AC vs central AC: Which one is more practical for your home and whyKeeping windows or doors openWhen you run the AC with windows or doors open, warm, humid air from outside enters the room. Also read: Portable AC vs desert cooler vs tower cooler: Which one is more practical for your roomIgnoring the outdoor unitThe outdoor unit also needs attention during the rainy season. Also read: Desert air cooler vs tower air cooler: Price, running costs, electricity consumption and other key factors compared