Defrosting vents are components in a vehicle's heating and air conditioning system designed to clear the windshield and windows of frost, ice, or condensation. When activated, these vents direct warm air towards the glass surfaces, helping to improve visibility and safety while driving in cold or humid conditions. Typically located on the dashboard, defrosting vents can be adjusted to control the airflow direction and intensity. Most vehicles allow drivers to switch between different settings, such as defrost, floor, and dashboard, to optimize comfort and effectiveness based on the weather conditions.