Worried about catching a cold from your AC? It’s a common concern, especially during long hours indoors. Start by setting the temperature no lower than needed for comfort—overcooling shocks the body and dries out your nasal passages. Always direct the airflow away from your face and upper body. Clean filters regularly to prevent dust and allergens from circulating. Keep a bowl of water or use a humidifier in the room to maintain moisture. Dress in light layers so your body isn’t overexposed to sudden temperature drops. If you're planning to buy air conditioner units for multiple rooms, choose models with precise temperature controls and swing options. Smart use and maintenance can help you stay cool—without the sniffles.